chapter 10

Question 1

abdominals

Answer 1

located between rib and pelvis on front of body. help support the trunk, allows movement, and holds organs in place.

Question 2

buccinator

Answer 2

main cheek muscle, helps with eating

Question 3

sartorius

Answer 3

longest muscle of the body, spans both hip and knee joints.

Question 4

function of external oblique muscles

Answer 4

helps trunk to rotate opposite side of muscle contraction

Question 5

quadriceps femoris

Answer 5

group of muscles at front of thigh. extend the leg at the knee joint and flex the thigh at the hip joint.rimarily active in jumping, running, and kicking movements

Question 6

flexor digitorum profundus

Answer 6

muscle in the forearm that flexes the fingers

Question 7

function of intercostals

Answer 7

muscles that pull down on the rib cage and push air out of the lungs

Question 8

antagonist

Answer 8

does opposite motion to keep position

Question 9

agonist

Answer 9

prime mover

Question 10

fixator

Answer 10

fixates certain area helping primary mover work efficiently

Question 11

what determines the power of a muscle

Answer 11

the number of muscle cells that is found in the muscle. As muscle cell increase so does the threshold of power.

Question 12

criteria in naming muscles

Answer 12

location or shape

Question 13

palmaris longus

Answer 13

one of the flexor muscles of the forearm that helps with wrist flexion

Question 14

flexor carpi ulnaris

Answer 14

superficial flexor muscle of the forearm that flexes and adducts the hand. most powerful wrist flexor

Question 15

extensor carpi radialis brevis

Answer 15

muscle in forearm that acts to extend and abduct the wrist. Shorter and thicker than carpi radialis longus

Question 16

adductor longus

Answer 16

adduct the thigh at the hip joint. Aids in external/ lateral rotation and flexion of the thigh

Question 17

gluteus maximus

Answer 17

most superficial and largest of the 3 muscles. makes up bulk shape and forms the buttock and hip area.