Muscles of the Arm

Question 1

Trapezius

Answer 1

origin- back of neck
insertion- middle of back, around vertebrae
function- move back of shoulder (scapula)

Question 2

Pectoralis Minor

Answer 2

origin- upper ribs
insertion- scapula
function- pull scapula forward and downward, raises ribs

Question 3

Pectoralis Major

Answer 3

origin- front of shoulder
insertion- humerous
function- adducts arm

Question 4

Lattissimus Dorsi

Answer 4

location- covers most of back
insertion- humerous
function- rotates arms and moves shoulder blades back and down

Question 5

Deltoid

Answer 5

origin- top of shoulder
insertion- humerous
function- abducts and flexes arm

Question 6

Biceps Brachii

Answer 6

origin- scapular
insertion- radius
function- flex elbow & rotate hand

Question 7

Brachialis

Answer 7

(directly under biceps)
origin- humerous
insertion- ulna
function- flex elbow

Question 8

Brachioradialis

Answer 8

(corner of elbow)
origin- humerous
insertion- radius
function- flexes elbow

Question 9

Triceps Brachii

Answer 9

(back of arm)
origin- humerous
insertion- ulna
function- extends elbow

Question 10

Supinator

Answer 10

(corner of elbow but small above Brachioradialis)
origin- humerous & ulna
insertion- radius
function- rotate forearm

Question 11

Flexor Carpi Radialis

Answer 11

origin- humerous
insetion- metacarpals
function- flexes wrist & abducts the hand

Question 12

Flexor Digitorum Superficialis

Answer 12

origin- humerous, ulna, & radius
insertion- finger tendons
function- flex finger and wrist

Question 13

Extensor Carpi Radialis Longus

Answer 13

origin- humerous
insertion- metacarpals
function- extends wrist and abducts hand

Question 14

Extensor Digitorum

Answer 14

origin- humerous
insertion- phalanges
function- extends fingers