A&P II - Shoulder MG 4
Terms
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- Which head of the biceps brachii passes through the intertubercular groove?
- long head
- can you name an everyday action in which the biceps brachii's ability to supinate the forarm would come in handy?
- opening a door
- as you follow the biceps brachii belly proximally, it becomes deep to which muscle?
- deltoid (anterior fibers)
- the thin sheet of fascia extending from the distal biecpes brachia tendon is called the __
- bicipital aponeurosis
- the long head of the triceps brachii weaves between which two muscles before attaching to the infraglenoid tubercule?
- teres major - teres minor
- to outline the distal tendon of the triceps brachii, which bony landmark do you want to locate?
- olecranon process
- what action could you ask your parter to perform to feel the contraction of the long head of the triceps brachii?
- extend his elbow (against resistance)
- in anatomical position, the corocobrachialis is deep to which two muscles?
- pectoralis major - deltoid (anterior)
- how can you position the shoulder to bring the belly of the coracobrachialis to a superficial position?
- laterally rotate and abduct the shoulder
- to locate the belly of the coracobrachialis, from which muscle would you slide off and into the axilla?
- pectoralis major
- passive abduction of the shoulder would __ the coracobrachialis.
- lengthen
- passive extension of the shoulder would __ the biceps brachii.
- lengthen
- passive flexion of the shoulder would __ the triceps brachii.
- lengthen
- passive pronation of the forearm would __ the biceps brachii.
- lengthen
- Origin of Biceps brachii
- coracoid process of scapula, supraglenoid tubercle of scapula
- Insertion of Biceps brachii
- tuberosity of the radius and aponeurosis of the biceps brachii
- Origin of Coracobrachialis
- coracoid process of the scapula
- Insertion of Coracobrachialis
- medial surface of the mid-humeral shaft
- Origin of Triceps brachii
- infraglenoid tubercle of the scapula, posterior surface of proximal half of the humerus and posterior surface of distal half of the humerus
- Insertion of Triceps brachii
- olecranon process of the ulna