origin insertions and actions - gym instructor

Quiz yourself by guessing what should be in each of the black rectangles below before clicking on it to display the answer.

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Muscle of upper arm

Origin

Insertion

Action

Bicep

top of humerus and scapula

radius

elbow flexion and supination of forearm

Tricep - long head

scapula

ulna

shoulder & elbow extension

tricep - lateral head

humerus

ulna

shoulder & elbow extension

tricep - medial head

humerus

ulna

shoulder & elbow extension

brachialis (upper arm)

humerus

ulna

elbow flexion