Arm

Question 0

biceps brachii

Answer 0

origin…
1) long head=supraglenoid tubercle
2) short head= coracoid process
insertion= radial tuberosity
action= flex supinated forearm, supinate flexed forearm
innervation= musculocutaneous

Question 1

coracobrachialis

Answer 1

origin= coracoid process
insertion= middle of humerus
action= adduction, flexion of arm
innervation= musculocutaneous

Question 2

brachialis

Answer 2

origin= anterior surface of humerus
insertion= coronoid process of ulna
action= flexes forearm in any position
innervation= musculocutaneous

Question 3

triceps brachii

Answer 3

origin…
long head= infraglenoid tubercle
lateral head= superior part of radial groove
medial head= inferior part of radial groove
insertion= olecranon
action= extension of forearm (long head can extend arm)
innervation= radial nerve