Arm muscles

Question 1

Coracobrachialis

Answer 1

O: coracoid process
I: mid. 1/3 hum. shaft
N: musculocutaneous
F: arm flex., arm add.

Question 2

Biceps brachii

Answer 2

Long head
O: supraglen. of scap.
Short head
O: coracoid proc. of scap
I: rad. tub. of rad
N: musculocutaneous
F: forearm flex. and sup.
shoulder weak flex. (long head)

Question 3

Brachialis

Answer 3

O: dist. half ant. surf. hum
I: ulnar tub. coronoid ulna
N: musculocutaneous
F: Forearm flex. (hammer curl)

Question 4

Triceps brachii

Answer 4

O: Long- infraglen. tub
lat.- rad. groove (sup)
med- rad. groove (inf)
I: lat. of olecranon
N: radial
F: arm ext. and add.(weak) (long head)
forearm ext.