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ASMT- A&P2 #3
Muscles of the Brachium, Antebrachium, and Hand
| Question | Answer |
|---|---|
| Anterior Brachial Muscles | Coracobrachialis, Brachialis, Biceps Brachii |
| Coracobrachialis (origin) | coracoid process |
| Coracobrachialis (insertion) | medial mid brachium |
| Coracobrachialis (function) | flexion and adduction of shoulder |
| Coracobrachialis (structure/relationship) | small muscle |
| Brachialis (origin) | distal 1/2 of humerus |
| Brachialis (insertion) | coranoid process of ulna |
| Brachialis (function) | flexion of elbow |
| Brachialis (structure/relationship) | largest of brachial mm |
| Biceps Brachii (origin) | Long: supraglenoid tubercle, Short: coracoid process |
| Biceps Brachii (insertion) | radial tuberosity |
| Biceps Brachii (function) | flexion of shoulder and elbow |
| Biceps Brachii (structure/relationship) | most superficial ant. brachial muscle, crosses over 3 joints, doesn't touch humerus |
| Posterior Brachial Muscles | triceps brachii |
| Triceps Brachii (origin) | Long: infraglenoid tubercle, Short: distal 1/2 of humerus, Lat: prooximal post. line of humerus |
| Triceps Brachii (insertion) | olecranon process |
| Triceps Brachii (function) | extension and adduction of shoulder, extension of elbow |
| Triceps Brachii (structure/relationship) | is the only posterior brachial mm |
| Anterior Antebrachial Muscles (action) | flexion |
| Anterior Antebrachial Muscles (attachment) | medial epicondyle |
| Posterior Antebrachial Muscles (action) | extension |
| Posterior Antebrachial Muscles (attachment) | lateral epicondyle |
| Hypothenar | pertains to pinky |
| Thenar | pertains to thumb |
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