CH. 12

Question 1

What are compartments?

Answer 1

spaces enclosed by fasciae called intermuscular septa

Question 2

What does each compartment contain?

Answer 2

one or more functionally related muscles

nerves and blood vessels

Question 3

What are the upper limbs divided into?

Answer 3

anterior and posterior compartments

Question 4

What are the lower limbs divided into?

Answer 4

anterior, posterior, medial, and lateral compartments

Question 5

Muscles acting on the shoulder, anterior group include:

Answer 5

Pectoralis minor, serratus anterior

Question 6

What does the pectoralis major do?

Answer 6

draws scapula laterally and forward around ches, rotates the scapula

Question 7

What does the serratus anterior do?

Answer 7

Holds scapula against rib cage, prime anterior mover in forward reaching (throwing, pushing actions)

Question 8

Muscle actions on the shoulder, posterior group

Answer 8

Traps, Lecator scapulae, Rhomboideous minor and major

Question 9

What do the traps do?

Answer 9

Stabalize scapula and shoulder during arm movements

Question 10

What does the Levator scapulae do?

Answer 10

Elevate scapulae (shoulder)

Question 11

What does the Rhomboideouos minor and major do?

Answer 11

retracts scapulae and braces shoulder, flex scapulae

Question 12

What are the muscles acting on the Arm, Axial muscles?

Answer 12

Pectoralis major, Latissimus dorsi

Question 13

What does the Pectoralis major do?

Answer 13

flexes, adducts, and medially rotates humerus

Question 14

What does the Latissimus dorsi do?

Answer 14

adducts, extends, and medially rotates humerus

Question 15

What are the muscles acting on the arm scapular muscles?

Answer 15

Deltoid, Teres major, Coracobrachialis, Supraspinatus,

Question 16

What does the deltoid do?

Answer 16

flex, extend, medially rotate, or abduct are depending on which fibers are active

Question 17

What does the teres major do?

Answer 17

extends and medially rotates humerus

Question 18

What does the coracobrachialis do

Answer 18

flexes and medially rotate the arm

Question 19

What does the supraspinatus do?

Answer 19

aid the deltoid in abduction of the arm

Question 20

What are the SITS?

Answer 20

Supraspinatus, Infraspinatus, Teres minor, and Subscapularis

Question 21

What do the SITS do?

Answer 21

prevent the humeral head to slide upward, modulate the action of deltoid

Question 22

What tendons of four muscles form the rotator cuff?

Answer 22

SITS

Question 23

What muscles act on the forearm (branchium)?

Answer 23

Brachialis, biceps brachii, triceps brachii

Question 24

What does the brachialis do?

Answer 24

prime mover of elbow flexion

Question 25

What does the biceps brachii do?

Answer 25

supinates forearm and flexes both elbow and shoulder

Question 26

What do the triceps brachii do?

Answer 26

extends elbow

Question 27

What muscles act on the forearm (antibranchium)?

Answer 27

Brachioradialis, anoconeous, supinator and biceps brachii, pronator teres, and pronator quadratus

Question 28

What does the brachioradialis do?

Answer 28

flexes elbow

Question 29

What does the anaconeous do?

Answer 29

extends elbow

Question 30

What do the supinator and biceps brachii do?

Answer 30

supinate forearm

Question 31

What do the pronator teres and pronator quadratus do?

Answer 31

pronate forearm

Question 32

What are the muscles acting on the wrist and hand (anterior, superficial)?

Answer 32

Flexor carpi radialis and ulnaris, flexor digitorium superficials, palmaris longus

Question 33

What does the Flexor carpi radialis and ulnaris do?

Answer 33

flexes wrist anteriorly

Question 34

What does the flexor digitorium superficials do?

Answer 34

flexes wrists and digits

Question 35

What does the palmaris longus do?

Answer 35

anchors the skin and fascia of the palmar region

Question 36

What are the muscles acting on the wrist and hand (anterior, deep)?

Answer 36

Flexor digitorium profundus and flexor pollicis longus

Question 37

what does the flexor digitorium profundus do?

Answer 37

flexes wrist and interphalangeal joints.

Question 38

What does the flexor pollices do?

Answer 38

flexes phalanges of thumb

Question 39

What do the Anterior compartment muscles on the wrist and hand (anterior) flex?

Answer 39

wrist (carpus), fingers (digits), and thumb (pollex)

Question 40

What muscles act on the wrist and hand (posterior, superficial)

Answer 40

Extensor carpi radialis longus and brevis, extensor digitorium, extensor digiti minimi, and extensor carpi ulnaris

Question 41

What does the Extensor carpi radialis lingus and brevis do?

Answer 41

extend wrist and radial flexion of the wrist

Question 42

What does the extensor digitorium do?

Answer 42

extends digits, and tend to spread them out

Question 43

What does the extensor digiti minimi do?

Answer 43

extends little finger

Question 44

What does the extensor carpi ulnaris do?

Answer 44

extends and fixes wrist, when fist is closed

Question 45

Whar are the Muscles acting on the wrist and hand (posterior, deep)?

Answer 45

Aductor pollicis longus, extensor pollicis brevis, extensor pollicis longus, extensor indicis

Question 46

What does the aductor pollicis longus do?

Answer 46

abducts thumb

Question 47

what does the extensor pollices brevis do?

Answer 47

extends metacarpal 1 and proximal phalanx of thumb

Question 48

What does the extensor pollicis longus do?

Answer 48

etends distal phalanx of thumb

Question 49

what does the extensor indicis do?

Answer 49

extends wrist and index finger

Question 50

What do the posterior compartment muscles on the wrist and hand do?

Answer 50

extend the wrist, fingers, and thumb

Question 51

The Thenar group, base of the thumb contain which muscles?

Answer 51

Adductor pollicis, abductor pollices brevis, flexor brevis, opponens pollicis and they control fine movemt of the thumb

Question 52

The Hypothenar group, base of the little finger contains which muscles?

Answer 52

Adductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi

Question 53

The midpalmer grop of muscles, hollow part of the palm contain which muscles?

Answer 53

Dprsa; interosseous, palmar interosseous, lumbrical muscles

Question 54

What does the Iliopsoas consits of which act on the hip and thigh anterior?

Answer 54

the illacus and the psoas major which flex the thigh

Question 55

Which muscles act on the hip and thigh lateral and posterior?

Answer 55

gluteus maximus, gluteus medius, and gluteus minimus

Question 56

What does the gluteus maximus do?

Answer 56

extends and abducts the thigh

Question 57

What do the gluteus medius and minimus do?

Answer 57

abduct and medially rotate the thigh

Question 58

Muscles acting on the foot posterior do what?

Answer 58

flex the foot and flex the toes

Question 59

Muscles acting on the hip and thigh lateral and posterior

Answer 59

tensor fasciae latae which extends the knee

Question 60

Muscles acting on the knee and leg?

Answer 60

quadriceps femoris and Hamstring muscles

Question 61

What does the quad femoris do?

Answer 61

extends the knee

Question 62

What does the hamstring muscles do?

Answer 62

flex the knee

Question 63

What makes up the compartments of the Quad femoris?

Answer 63

Rectus femoris vastus intermedialis vastus medialis vastus lateralis

Question 64

What makes up the Hamstring muscles

Answer 64

biceps femoris, semitendinosus, semimembranosus