GROSS ANATAMY Blk1
Terms
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- Cause of "Wrist Drop" and clinical presentation
- Injured RADIAL N. in spiral groove of Humerus. Inability to extend hand at wrist.
- Name 2 general ways the AXILLARY N. can be injured and why.
- (1) Fractures of the surgical neck of humerus (2) Dislocation at the glenohumeral joint Reason: Axillary N. winds around surgical neck of humerus
- Muscle(s) innervated by DORSAL SCAPULAR N.
- (1) RHOMBOIDS (2) LEVATOR SCAPULAE
- Muscle(s) innervated by LONG THORACIC N.
- SERRATUS ANTERIOR
- Muscle(s) innervated by SUPRASCAPULAR N.
- (1) SUPRASPINATUS (2) INFRASPINATUS
- Muscle(s) innervated by (1) UPPER (2) MIDDLE (3) LOWER SUBSCAPULAR N.
- (1) SUBSCAPULAR (2) LATISSIMUS DORSI (aka Thoracodorsal N.) (3) SUBSCAPULAR, TERES MAJOR
- Muscle(s) innervated by AXILLARY N.
- (1) DELTOID (2) TERES MINOR * Becomes UPPER LATERAL CUTANEOUS N. of Arm
- Muscle(s) innervated by LATERAL PECTORAL N.
- PECTORALIS MAJOR
- Muscle(s) innervated by MEDIAL PECTORAL N.
- (1) PECTORALIS MAJOR (2) PECTORALIS MINOR
- AXILLARY N. responsible for all actions at shoulder joint EXCEPT for what action?
- ADDUCTION
- AXILLARY N. and MUSCULOCUTANEOUS N. end as what nerves?
- AXILLARY N. - UPPER LATERAL CUTANEOUS N. OF ARM MUSCULOCUTANEOUS N. - LATERAL CUTANEOUS N. OF FOREARM
- RADIAL N. and MUSCULOCUTANEOUS N. runs with what vessels
- A.N - Deep Brachial Art M - Cephalic Vein
- What is CARPAL TUNNEL SYNDROME? What nerve is affected? Symptoms
- Results from any lesion that significantly reduces the size of the carpal tunnel or increases the size of the structures (inflammation of synovial sheaths). -Median N. affected b/c passes thru carpal tunnel (Ulnar N. unaffected) -Symptoms: (1) Paresthesia - tingling(2) Hypothesia - diminished sensation (3) Anesthesia- absence of tactile sensation
- Cause of "Hand of Benediction"
- Injury to median nerve in forearm. Also called Median Nerve Palsy. Digits 1-3 remain party extended when patient tries to make a fist.
- Funny bone
- Exposed Ulnar N. crossing at medial epicondyle of humerus
- Clinical manifestations from fractures of medial epicondyle. Why?
- Fracture at medial epicondyle will damage ULNAR N. Manifestations include (1) "Furrowing" b/w metacarpals on dorsum of hand (2) Wasting of hypothenar eminence (3) Inability to adduct thumb (4) Inability to abduct or adduct fingers
- Cause of "Claw Hand" or "Main en griffe"
- Long-standing case of injured Ulnar N. - Ulnar N. innervates Dorsal and Palmar Interossei muscles. D.I - Flex Metacarpal and Extend Proximal interphalanges. P.I - Flex Metacarpals and Extend Interphlanges therefore if Ulnar N. damaged Metacarpals will HYPEREXTEND and phalanges will FLEX
- Anterior Leg Muscle responsible for PRONATING FOOT
- Peroneal (Fibularis) tertius
- Anterior Leg Muscle responsible for SUPINATING FOOT
- TIBIALIS ANTERIOR
- Lateral Leg Muscles responsible for PRONATING FOOT
- (1) PERONEUS (Fibularis) LONGUS (2) PERONEUS (Fibularis) BREVIS