Block 1 - Gross Dissector
Terms
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copy deck
- Located on the posterior aspect of the occipital bone of the skull?
- External Occipital Protuberance
- Midline of Neck and Back?
- Vertebral Furrow
- First vertebral spine palpable?
- C7: Vertebral Prominens
- Vertebral Furrow is deepest where?
- Thoracic and lumbar regions
- Vertebral Furrow ends where?
- Sacrum
- Bi-lateral from the superior part of the sacrum is the _____________.
- Iliac Crest
- The highest point of the iliac crest is at what vertebral level?
- L4 (Used as a surface reference for lumbar punctures)
- The lateral most aspect of the shoulder?
- Acromion of the Scapula
- The acromion articulates with the ______.
- Lateral end of the clavicle
- The acromion continues postero-medially as the ____________.
- Spine of the Scapula
- The spine of the scapula is at what vertebral level?
- T3
- The inferior angle of the scapula is at what vertebral level?
- T7
- What makes up the posterior axillary fold?
- Lower border of the Latissimus Dorsi and Teres Major
- Cutaneous Nerves to the skin of the back are branches of the _____________.
- Dorsal rami of the spinal nerves
- # of pairs of spinal nerves?
- 31 pairs
- The superficial group of muscles is composed of?
- 5 Muscles: Trapezius Latissimus Dorsi Levator Scapulae Rhomboid Minor and Rhomboid Major
- The superficial group functionally contributes to the ___________.
- Upper Limb
- What muscles of the back cover most of the surface?
- Trapezius and Latissimus Dorsi
- Origin: Trapezius
- External Occipital Protuberance ligamentum nuchae and C7-T12
- Insertion: Trapezius
- Lateral end of clavicle acromion and scapular spine
- What artery and nerve lie deep to the lateral portion of the Trapezius?
- Transverse Cervical Artery (& Vein) and Subtrapezial Nerve Plexus
- Subtrapezial Nerve Plexus is formed by ___.
- Accessory Nerve (CN XI) and the 3rd and 4th cervical spinal nerves
- Latissimus Dorsi is (superficial/deep) to Trapezius?
- Deep
- What are the borders of the Triangle of Ascultation?
- Superior: Rhomboid Major. Medially: Trapezius. Laterally: Medial border of Scapula. Inferiorly: Latissimus Dorsi
- Where does Latissimus Dorsi cross the Scapula?
- At the inferior angle of the scapula
- The Latissimus Dorsi muscle fibers interdigitate with those of _________.
- External Abdominal Oblique and Serratus Anterior Muscles
- What muscle does the lateral and superior border of the Latissimus Dorsi wrap around?
- Teres Major
- What do the Latissimus Dorsi and Teres Major form together?
- Posterior Axillary Fold
- Latissimus Dorsi: origin blood supply and insertion
- Thoracodorsal Nerve (Posterior Cord of Brachial Plexus) Thoracodorsal Artery (Branch of Subscapular Artery III) Intertubercular Groove of humerus
- Insertion: Serratus Anterior
- Ventral surface of the medial border of the Scapula
- Action: Serratus Anterior
- Holds scapula against posterior chest wall and rotates the scapula superiorly
- Innervation: Serratus Anterior
- Long Thoracic Nerve (C5 C6 C7)
- Clinical: Paralysis of Long Thoracic Nerve
- Winged Scapula
- Consists of what muscles?
- Posterior Superior Serratus. Posterior Inferior Serratus
- Innervation?
- Intercostal Nerves
- Function of Middle Group of Back Muscles
- Respiration
- Function of the Deep Group of Muscles?
- Direct movement of the vertebral column and skull
- Innervation for Deep Group?
- Dorsal rami of the spinal nerves
- Innervation for the superficial and middle groups?
- Ventral rami of the spinal nerves
- Three parts of Erector Spinae Muscle (Medial to Lateral)
- Spinalis Longissimus and Iliocostalis
- Action: Erector Spinae Muscle
- Extension and lateral flexion of vertebral column
- What makes up the intervertebral disc?
- Anulus Fibrosus and Nucleus Pulposus
- # of Vertebrae: Cervical thoracic lumbar sacral coccyx
- 7 Cervical 12 thoracic 5 lumbar 5 sacral and 4 coccyx
- Know body vertebral foramen vertebral canal pedicle laminae transverse process articular process and spinous process
- What connects the inner surface of the laminae of adjacent vertebrae?
- Ligamenta Flava
- What is located in the epidural space?
- Internal Vertebral Venous Plexus and Epidural fat
- What is significant about the Internal Vertebral Venous Plexus concerning the spread of cancer?
- Contains no valves. Pathway for the spread of cancer from abdomen to the brain
- What are the 3 meningeal layers covering the spinal cord?
- Dura Mater Arachnoid Membrane and Pia Mater
- The Dura Mater extends from where to where?
- The base of the skull to S2
- What does the Dura Mater form at S2?
- Filum Terminale Externum (Coccygeal Ligament)
- What cannot be separated from the spinal cord?
- Pia Mater
- What joins to form a spinal nerve?
- Dorsal and Ventral Roots of the Spinal Cord
- What occurs on the dorsal root at approximately the vertebral foreman?
- Dorsal Root Ganglion
- What is a lateral extension of the Pia Mater?
- Denticulate Ligaments
- Denticulate ligaments extend between what?
- Ventral and Dorsal Roots of the spinal cord
- What is the function of the Denticulate Ligaments?
- It anchors the Dura Mater between the exits of the ventral and dorsal roots from the dural sac to help stabilize the spinal cord
- How far inferior does the spinal cord extend?
- L2 (or L1)
- Where does the spinal cord enlarge? Why?
- Cervical and Lumbar Enlargements (many nerves that supply the upper and lower limbs)
- What is the structure called where the spinal cord tapers off at L2?
- Conus Medullaris
- What extends from the inferior tip of the conus medullaris? What is it an extension of?
- Filum Terminale Internum (Pia Mater)
- What surrounds the filum terminale internum?
- Cauda Equina
- What is the cauda equina?
- Massive collection of ventral and dorsal roots of the spinal nerves and filum terminale within the inferior part of the dural sac
- What lines the posterior (anterior) surface of the vertebral bodies? Function?
- Posterior (Anterior) Longitudinal Ligament (Prevents hyperflexion (hyperextension) of the vertebral column)
- Muscles of the Scapular Region?
- Deltoid Supraspinatus Infraspinatus Teres Minor Teres Major and Subscapularis
- What nerves enter the skin at the posterior border of the Deltoid?
- Branches of the superior lateral brachial Cutaneous nerve
- What are the borders of the Quadrangular Space?
- Superiorly: Teres Minor. Medially: Long Head of the Triceps. Laterally: Shaft of Humerus. Inferiorly: Teres Major
- What is located in the Quadrangular Space?
- Axillary Nerve and Posterior Circumflex Humeral Artery
- What are the borders of the Triangular Space?
- Superiorly: Teres Minor Laterally: Long Head of the Triceps Inferiorly: Teres Major
- What is located in the Triangular Space?
- Circumflex Scapular Artery
- Insertion: Supraspinatus
- Sup. Facet of Greater Tubercle of Humerus
- What crosses the suprascapular notch?
- Superior Transverse Scapular Ligament
- What courses superiorly to the above-mentioned ligament?
- Suprascapular Artery. (A-Army over the Bridge)
- What courses inferiorly to the above-mentioned ligament?
- Suprascapular Nerve (Superior Truck of Brachial Plexus) C5 and C6. N-Navy under the bridge
- Suprascapular Nerve innervates?
- Supraspinatus and Infraspinatus Muscles
- What makes up the Rotator Cuff?
- Supraspinatus SitS: Infraspinatus Teres Minor Teres Minor and Subscapularis
- What is the lymphatic drainage of the mammary glands?
- The entire mammary gland is superficial to what?
- The deep fascia of the Pectoralis Major Muscle
- What veins are located at the lateral and medial aspects of the arm respectively?
- Cephalic and Basilic Veins
- Where do the Cephalic and Basilic Veins originate?
- Lateral and medial sides of the dorsal venous arch respectively on the posterior of the hand
- Describe the path and termination of the Cephalic Vein.
- Anterior surface of the forearm and arm Ascends between the Deltoid and Pec. Major In the Deltopectoral Triangle. Inferior to clavicle the Cephalic vein penetrates the costocoracoid membrane. Terminates in the Axillary Vein in the axilla
- What forms the axillary vein?
- 2 brachial veins and the Basilic Vein
- What connects the Basilic and Cephalic Veins? Significance?
- Median Cubittal Vein (Phlebotomy)
- What forms the anterior axillary fold?
- Pectoralis Major
- Where does Pec. Major insert?
- Crest of Greater Tubercle
- What passes through the costocoracoid membrane of the clavipectoral fascia?
- Cephalic Vein Lateral Pectoral Nerve and Thoracoacromial Artery Trunk
- These 3 structures pass through the costocoracoid membrane in what relation to Pec. Minor?
- Medial to Pectoralis Minor
- What is the origin of the Thoracoacromial Artery Trunk?
- A branch of the 2nd part of the Axillary Artery
- What does the clavicular branch supply?
- Subclavius M. and the sternoclavicular Joint
- What encloses pectoralis minor?
- Clavipectoral fascia
- Where is the clavipectoral fascia located?
- Between the clavicle to the axillary fascia
- What is the costocoracoid membrane?
- The clavipectoral fascia between the clavicle and pectoralis minor
- What is the Suspensory Ligament of the Axilla?
- The clavipectoral fascia located inferior to Pec. Minor and extending to the axillary fascia
- Where does Pectoralis Minor insert?
- Coracoid Process of the Scapula
- What pierces Pectoralis Minor?
- Medial Pectoral Nerve
- Why is Pectoralis Minor an important landmark?
- Its position divides the Axillary Artery into 3 parts
- Boundaries of the Axilla
- Triangle Shape
- Anterior
- Pectoralis Major Pectoralis Minor Clavipectoral Fascia
- Medial
- Serratus Anterior Upper Ribs
- Posterior
- Subscapularis Latissimus Dorsi Teres Major
- Lateral
- Intertubercular Groove
- Base
- Axillary Fascia
- Apex
- Clavicle Scapula First Rib
- Axillary Vein Borders (Becomes)
- Lateral border of Teres Major Lateral border of first rib (Subclavian Vein)
- What is the main source of blood to the shoulder and upper limb?
- Axillary Artery
- Borders?
- Lateral border of first rib Inferior border of Teres Major
- What divides the Axillary Artery into 3 parts?
- Pectoralis Minor
- Name the location of the divisions?
- 1st Part: Medial to Pectoralis Minor 2nd Part: Deep to Pectoralis Minor and 3rd Part: Lateral to Pectoralis Minor
- What branches from the 1st part of the Axillary Artery? Supplies?
- Superior Thoracic Artery 1st and 2nd Intercostal Space
- What branches from the 2nd part of the Axillary Artery?
- Thoracoacromial Artery Trunk Lateral Thoracic Artery
- What is the path of the Lateral Thoracic Artery?
- Courses on the surface of Serratus Anterior to supply structures of the chest wall
- What courses with the Lateral Thoracic Artery?
- Long Thoracic Nerve (Serratus Anterior: Winged Scapula)
- What branches from the 3rd part of the Axillary Artery?
- Subscapular Artery Posterior Circumflex Humeral Artery and Anterior Circumflex Humeral Artery
- What branches from the Subscapular Artery?
- Circumflex Scapular Artery and Thoracodorsal Artery
- What provides collateral circulation with the Circumflex Scapular Artery?
- Suprascapular Artery (Subclavian Artery) and Dorsal Scapular Artery (Subclavian Artery)
- What does the Circumflex Scapular Artery pass through? Does it course with any other structure?
- Triangular Space. No
- What is the main blood supply to Latissimus Dorsi?
- Thoracodorsal Artery
- What courses with the Thoracodorsal Artery?
- Thoracodorsal Nerve (Posterior Cord on BP)
- What does the Posterior Circumflex Humeral Artery pass through? Does it course with any other structure?
- Quadrangular Space Axillary Nerve (C5 and C6)
- What part of the Humerus does the Anterior and Posterior Circumflex Humeral Arteries surround?
- Surgical Neck of the Humerus
- Which Humeral Circumflex Artery is larger?
- Posterior Humeral Circumflex
- What does the Axillary artery become at the lateral border of Teres Major?
- Brachial Artery
- The 5 parts of the Brachial Plexus?
- Roots Trunks Divisions Cords Branches
- The roots of the Brachial Plexus are made up of ____________.
- Ventral Rami of C5 – T1
- What part of the Brachial Plexus is superior to the clavicle?
- Ventral Rami Roots and the 3 Trunks
- What part of the Brachial Plexus is deep to the clavicle?
- The 3 anterior and 3 posterior Divisions
- What parts of the Brachial Plexus is inferior to the clavicle?
- 3 Cords and the Terminal Branches
- What is the significance of anterior and posterior Divisions of the Brachial Plexus?
- They represent the separation of nerve fibers that innervate the ventral and dorsal muscle masses of the limb
- What are the Cords of the Brachial Plexus?
- Lateral Posterior Anterior
- What are the Cord names in reference to?
- Their relationship to the 2nd part of the Axillary Artery (Deep to Pec. Minor)
- What forms the posterior cord?
- The junction of 3 posterior Divisions. Derived from each of the 3 Trunks
- The posterior cord contributes to the innervation of what?
- The dorsal (extensor) surface of the limb and shoulder
- What forms the lateral cord?
- Anterior Divisions of the Superior and Middle Trunks
- What forms the medial cord?
- The anterior Division of the inferior trunk
- What do the lateral and medial cords innervate?
- Muscles on the ventral (flexor) surface of the limb and anterior chest wall
- The cords of the Brachial Plexus should be found deep to what muscle?
- Pectoralis Minor (2nd part of the Axillary Artery)
- What nerve branches off the lateral cord?
- Lateral Pectoral Nerve
- What is the path of the Lateral Pectoral Nerve?
- Passes Medial to Pectoralis Minor Through Costocoracoid Membrane and Innervates Pectoralis Major
- What nerves branch off the medial cord?
- Medial Pectoral Nerve Medial Antebrachial Cutaneous Nerve and Medial Brachial Cutaneous Nerve
- What is the path of the medial pectoral nerve?
- Passes between the Axillary Artery and Axillary Vein Penetrates (Innervates) Pectoralis Minor and Innervates Pectoralis Major
- What courses with the Basilic Vein?
- Medial Antebrachial Cutaneous Nerve
- To what nerves does the medial cord contribute?
- Median and Ulnar Nerve
- What contributes to the formation of the Median Nerve?
- Lateral Cord and Medial Cord (C5 C6 C7 C8 T1)
- Initially where is the Median Nerve located?
- On the anterolateral side of the Axillary Artery
- What contributes to the formation of the Musculocutaneous Nerve?
- Lateral Cord
- What does the Musculocutaneous Nerve innervate?
- Ventral side of the arm and lateral skin of the forearm?
- What is the path of the Musculocutaneous Nerve as it enters the arm?
- It penetrates the Coracobrachialis Muscle
- What nerves branch off from the posterior cord?
- Upper Subscapular Nerve Thoracodorsal Nerve and Lower Subscapular Nerve
- What innervates Subscapularis Muscle?
- Upper and Lower Subcapular Nerves
- What innervates Teres Major?
- Lower Subscapular Nerve
- What courses with the Thoracodorsal Nerve?
- Thoracodorsal Artery (3rd part of the Axillary Artery)
- What forms the Axillary Nerve?
- Posterior cord splits to form the Axillary Nerve(C5 C6) and the Radial Nerve(C5 C6 C7 C8 T1)
- What is the path of the Axillary Nerve? (Relate to Subscapularis)
- Passes inferior to Subscapularis Through Quadrangular Space
- What does the Axillary Nerve innervate?
- Teres Minor and Deltoid
- What passes through the Quadrangular Space?
- Axillary Nerve Posterior Circumflex Humeral Artery
- What cutaneous nerves does the Axillary Nerve provide?
- Posterior Shoulder
- What form the Radial Nerve?
- The split of the posterior cord into Radial Nerve and Axillary Nerve
- What in general does the Radial Nerve innervate?
- The dorsal muscle mass and skin of the arm and forearm
- Note the characteristic M configuration on the ventral surface of the Axillary Artery
- Where is the Musculocutaneous nerve in relation to the Axillary Artery?
- Lateral
- What nerves are medial to the Axillary Artery?
- Ulnar Nerve Medial Brachial Cutaneous Nerve and Medial Antebrachial Cutaneous Nerve
- What is the initial path of the Radial Nerve?
- Posterior to the Axillary Artery and Enters the Radial Groove of the Humerus
- What does these 5 groups receive?
- Afferent lymphatic vessels from the upper limb shoulder and mammary gland
- What group is mainly responsible for draining lymph from the mammary gland?
- Pectoral Group
- Collectively these 5 groups form what?
- Subclavian Lymphatic Trunk
- Where does the Subclavian Lymphatic Trunk drain?
- Right: Junction of the Right Subclavian and Internal Jugular veins. Left: Left Brachiocephalic vein
- What boundary is the Serratus Anterior in the axilla?
- Medial Wall of the Axilla
- What is the origin of the Serratus Anterior Muscle?
- Upper eight or nine ribs
- Where does the Serratus Anterior insert?
- The costal surface of the entire medial border of the Scapula
- What innervates Serratus Anterior?
- Long Thoracic Nerve and (Long –N- Nerve)
- Function of Serratus Anterior?
- Holds scapula against thoracic wall Protracts the scapula and Rotates glenoid cavity of scapula superiorly
- What occurs if the Serratus Anterior or Long Thoracic Nerve is damaged?
- Winged Scapula (Scapula projects dorsally away for chest wall)
- What forms the posterior wall of the axilla?
- Subscapularis (Largest) Latissimus Dorsi and Teres Major
- What innervates Subscapularis?
- Upper Subscapular Nerve and Lower Subscapular Nerve
- What stabilizes the Humerus in the glenoid cavity?
- Rotator Cuff and Tendon of Long Head of Triceps
- What compartments of the arm exist?
- Anterior Flexor Compartment and Posterior Extensor Compartment
- What separates these compartments?
- Intermuscular Septa
- What supports and maintains the structure of the arm?
- Brachial Fascia
- What does the Brachial Fascia form on the lateral and medial aspects of the arm?
- Lateral and Medial Intermuscular Septa
- What muscles are located in the Anterior Flexor Compartment of the arm?
- Biceps Brachii Coracobrachialis and Brachialis
- Where does the Biceps Brachii originate?
- Short Head: Coracoid Process Long Head: Supraglenoid Tubercle
- Where does the Biceps Brachii insert?
- Tuberosity of the Radius
- What is the Bicipital Aponeurosis?
- Superficial medially directed aponeurotic extension from the medial side of the Biceps Brachii Tendon
- What is the function of the Bicipital Aponeurosis?
- Protective covering for the Median Nerve and Brachial Artery in the Cubital Fossa
- Where is the Brachialis Muscle located?
- Deep to the inferior half of the Biceps Brachii
- Where does the Brachialis Muscle originate?
- Ventral surface of the inferior Humerus
- Where does the Brachialis Muscle insert?
- Tuberosity of the Ulna
- What is the location of the Coracobrachialis? (In Relation to the Biceps Brachii)
- Medial and parallel to the short head of the Biceps Brachii
- What is the origin and insertion of the Coracobrachialis?
- Origin: Coracoid Process Insertion: Medial aspect of the middle of the Humerus
- What innervates the muscles of the anterior compartment?
- Musculocutaneous Nerve
- What is the course of the Musculocutaneous Nerve through the arm?
- Pierces the Coracobrachialis Muscle Into the muscular plane between the Brachialis Muscle and the Biceps Brachii
- Where does the Musculocutaneous nerve emerge from the arm?
- Laterally from between the Brachialis Muscle and the Biceps Brachii
- After emerging in the inferior part of the arm what does the Musculocutaneous Nerve become?
- Lateral Antebrachial Cutaneous Nerve
- What does the previous nerve supply?
- Cutaneous innervation to the skin of the lateral forearm (GSE GVE GVA)
- What supplies cutaneous innervation to the medial aspect of the forearm?
- Medial Antebrachial Cutaneous Nerve (Medial Cord of Brachial Plexus)
- Where is the origin of the Brachial Artery?
- Originates from the inferior border of Teres Major as a continuation of the Axillary Artery
- Where does the Brachial Artery course?
- Anterior Compartment of the arm Within the Neurovascular compartment
- What forms the Neurovascular compartment of the arm?
- Splitting of the medial intermuscular septum
- Initially what is the position of the Median Nerve and Ulnar Nerve in relation to the Brachial Artery?
- Median Nerve: Lateral to Brachial Artery Ulnar Nerve: Medial to Brachial Artery
- During their course through the arm what is the relationship between the Median Nerve and Brachial Artery?
- The Median Nerve passes from the lateral side of the Brachial Artery ventrally across to the medial side of the Brachial Artery
- What accompanies the Brachial Artery?
- 2 Brachial Veins (Not nerves) (Venae Comitantes)
- Where do these veins terminate?
- Basilic Vein
- What are the main branches of the Brachial Artery (superior to inferior)?
- Deep Brachial Artery Superior Ulnar Collateral Artery and Inferior Ulnar Collateral Artery
- The Deep Brachial Artery arises just inferior to what muscle?
- Teres Major Muscle
- What is the course of the Deep Brachial Artery?
- Medial to the Humerus it enters the posterior compartment of the arm in the Radial Groove of the Humerus
- What enters the Radial Groove with the Deep Brachial Artery?
- Radial Nerve
- What arises from the Brachial Artery just inferior to the Deep Brachial Artery?
- Superior Ulnar Collateral Artery
- What courses with the Superior Ulnar Collateral Artery?
- Ulnar Nerve
- What is the path of the Superior Ulnar Collateral Artery and Ulnar Nerve?
- Penetrates the intermuscular septum to enter the posterior compartment of the arm. Descending the arm both pass posterior to the medial epicondyle of the Humerus
- Where does the Inferior Ulnar Collateral Artery originate?
- From the Brachial Artery just superior to the medial epicondyle
- What is the path of the Inferior Ulnar Collateral Artery?
- It passes anterior to the medial epicondyle of the Humerus
- What is significant about the Deep Brachial Artery Superior Ulnar Collateral Artery and the Inferior Ulnar Collateral Artery?
- Collateral Circulation for the Brachial Artery around the elbow
- Intersecting artery in collateral circulation?
- Radial Recurrent Artery Recurrent Interosseous Artery and Posterior Ulnar Recurrent Artery
- Do the Median Nerve and Ulnar Nerve provide innervation within the arm?
- No
- What is the origin of the Triceps Brachii?
- Long Head: Infraglenoid Tubercle and Lateral Head: Humerus superior and lateral to Radial Groove and Medial Head: Humerus inferior and medial to Radial Groove
- What is located deep to the Lateral Head of the Triceps Brachii?
- Radial Groove Radial Nerve and Deep Brachial Artery
- What nerve innervates Triceps Brachii?
- Radial Nerve
- What regions does the Radial nerve provide cutaneous innervation to the skin?
- Posterior Brachial Cutaneous Branches and Posterior Antebrachial Cutaneous Branches
- In the lower 3rd of the arm what is the path of the Radial Nerve?
- Pierces lateral intermuscular septum just superior to lateral epicondyle Passes anterior to lateral epicondyle
- When the Radial Nerve moves across the lateral epicondyle what is its relationship to neighboring muscles?
- As it passes anterior to the lateral epicondyle the Radial Nerve is between the Brachialis Muscle and the Brachioradialis Muscle
- What muscles do the Radial Nerve innervate at the lateral epicondyle?
- Brachioradialis Muscle and Extensor Carpi Radialis Longus Muscle
- What forms an arterial branch that contributes to collateral circulation between the axillary and brachial arteries?
- Deep Brachial Artery and Has ascending branch that anastomoses with the Anterior and Posterior Circumflex Humeral vessels
- What courses with the Radial Nerve anterior to the lateral epicondyle?
- Radial Recurrent Artery
- What is the Cubital Fossa?
- The triangular region on the ventral side of the elbow that contains most of the vessels and nerves that pass between the arm and the forearm
- Is the Ulnar Nerve in the Cubital Fossa?
- No
- What significant vein is superficial to the Cubital Fossa?
- Median Cubital Vein (Phlebotomy)
- Boundaries of the Cubital Fossa
- Roof (Anterior): Bicipital Aponeurosis. Floor (Posterior): Brachialis Muscle and Supinator Muscle. Lateral: Brachioradialis Muscle. Medial: Pronator Teres
- What nerve is deep to the lateral boundary of the Cubital Fossa?
- Radial Nerve
- What does the Radial Nerve divide into?
- Superficial Radial Nerve and Deep Radial Nerve
- What is the path of the Superficial Radial Nerve?
- Passes superficial to the Supinator Muscle Deep to the Brachioradialis Muscle
- What is the initial path of the Deep Radial Nerve?
- Penetrates the Supinator Muscle
- Lateral to Medial what structures are found in the Cubital Fossa?
- TAN
- At the apex of the Cubital Fossa what does the Brachial Artery divide into?
- Radial Artery Ulnar Artery
- What connects the Ulna and Radius of the forearm?
- Interosseous Membrane
- What is the Extensor Retinaculum?
- A transverse thickening of the deep (Antebrachial) fascia on the dorsum of the wrist
- What is found on the dorsum of the hand that forms the Cephalic and Basilic Veins?
- Dorsal Venous Plexus. Medial side: Basilic Vein. Lateral side: Cephalic Vein
- What supplies cutaneous nerves to the dorsum of the hand?
- Medial: Ulnar Nerve. Lateral: Superficial Radial Nerve
- What are the superficial muscles of the extensor compartment of the forearm?
- Brachioradialis Muscle Extensor Carpi Radialis Longus Muscle Extensor Radialis Brevis Muscle Extensor Digitorum Muscle Extensor Digiti Minimi Muscle and Extensor Carpi Ulnaris Muscle
- What muscles are innervated by the Radial Nerve before its division?
- Brachioradialis Muscle and Extensor Carpi Radialis Longus Muscle
- What innervates the Extensor Carpi Radialis Brevis Muscle? When?
- Deep Radial Nerve Proximal to the Supinator Muscle
- What muscles are innervated by the Deep Radial Nerve distal to it penetration of the Supinator Muscle?
- Extensor Digitorum Muscle Extensor Digiti Minimi Muscle Extensor Carpi Ulnaris Muscle
- Which muscle’s tendon does not cross the carpal bones to the dorsum of the hand in the superficial extensor group?
- Brachioradialis Muscle
- Where does the Brachioradialis Muscle insert?
- Styloid Process of the Radius
- What muscles make up the deep extensor muscle compartment of the forearm?
- Supinator Muscle Abductor Pollicis Longus Muscle Extensor Pollicis Brevis Muscle Extensor Pollicis Longus Muscle Extensor Indicis Muscle
- Where does the Supinator Muscle insert in relation to the Pronator Teres Muscle?
- Anterior surface of the radius proximal to the insertion of Pronator Teres
- What nerve innervates the Supinator Muscle?
- Deep Radial Nerve
- What nerve innervates the remaining four muscles?
- Deep Radial Nerve