Muscles Chapter 11 Test

Question 1

Epicranial aponeurosis

Answer 1

draws scalp anteriorly and posteriorly; skin of supraorbital margin

Question 2

orbicularis oculi

Answer 2

closes eyes

Question 3

levator labii superioris

Answer 3

elevates lower lip

Question 4

zygomaticus major

Answer 4

origin zygomatic bone

Question 5

depressor labii inferioris

Answer 5

depresses lower lip

Question 6

orbicularis oris

Answer 6

closes lips

Question 7

extrinsic eye muscles

Answer 7

3 pairs of muscles move the eyes. Includes: superior and inferior recti, lateral and medial recti, superior and inferior obliques

Question 8

lateral pterygoid

Answer 8

depression of mandible

Question 9

masseter

Answer 9

Origin: zygomatic arch; Insertion: lateral surface of mandibular ramus and angle; elevation of mandible

Question 10

deglutition

Answer 10

swallowing

Question 11

glenioglossus

Answer 11

Origin: mandible; pulls tongue downward and forward

Question 12

styloglossus

Answer 12

Origin: styloid process; pulls tongue upward and backward

Question 13

hyoglossus

Answer 13

Origin: hyoid bone; pulls tongue downward and flattens it

Question 14

sternocleidomastoid

Answer 14

Origin: manubrium of sternum and clavicle; insertions: mastoid process; flexion of cervical vertebrae and rotation of the head

Question 15

diaphragm inhalation

Answer 15

contraction of this muscle, causes muscle to flatten

Question 16

diaphragm exhalation

Answer 16

relaxation causes it to move superiorly

Question 17

external intercostals

Answer 17

extend downward and anteriorly from rib to rib, pulls ribcage up and downward during inspiration (11 prs)

Question 18

internal intercostals

Answer 18

extends upward and anteriorly from rib to rib, pulls ribcage up and outward during inspiration (11 prs)

Question 19

pectoralis minor

Answer 19

connects ribs 3-5

Question 20

pectoralis major

Answer 20

connects ribs 1-9; Origin: medial half of clavicle, costal cartilage, external oblique; insertion intertubercular sulcus of humerus; flexes, adducts, and rotates the humerus.

Question 21

latissimus dorsi

Answer 21

Origin: vertebrae T7-L5, iliac crest; insertion intertubercular sulcus of humerus; adducts, extends, and rotates humerus

Question 22

deltoid

Answer 22

Origin: acromion, the spine of the scapula, clavicle; insertion: deltoid tuberosity of humerus; abducts, flexes, and extends the arm

Question 23

coracobrachialis

Answer 23

Origin: coracoid process of scapula; assists in flexion of the arm

Question 24

teres major

Answer 24

assists in extension of arm

Question 25

Biceps Brachii

Answer 25

Origin: glenoid cavity and coracoid process; insertion: radial tuberosity; flexion of arm and forearm

Question 26

brachialis

Answer 26

inserts on ulna

Question 27

triceps brachii

Answer 27

Origin: glenoid cavity and humerus; insertion olecranon; extends the elbow.

Question 28

brachioradialis

Answer 28

Insertion: lateral surface of radius; flexion of the elbow

Question 29

pronator teres

Answer 29

Origin: medial epicondyle of the humerus and coronoid process of ulna; insertion: radius; pronates forearm

Question 30

supinator muscle

Answer 30

Origin: lateral epicondyle of humerus; insertion: radius; supinates arm

Question 31

flexor carpi radialis

Answer 31

Origin: medial epicondyle of humerus; insertion: metacarpals 2-3; flexes wrist.

Question 32

flexor carpi ulnaris

Answer 32

Origin: medial epicondyle of humerus; insertion: pisiform, hamate, metacarpal V; flexes wrist.

Question 33

flexor digitorum superficialis

Answer 33

Origin: medial epicondyle of humerus, olecranon; insertion: middle phalanges 2-5; flexes wrist and phalanges

Question 34

extensor carpi radialis longus

Answer 34

Origin: lateral supracondylar ridge of humerus; insertion: metacarpal 2; extends wrist

Question 35

extensor digitorum

Answer 35

Origin: lateral epicondyle of humerus; insertion: phalanges 2-5; extends wrists and phalanges

Question 36

gluteus maximus

Answer 36

Origin: ilium, iliac crest, coccyx, sacrum; insertion: femur, lateral condyle of tibia; extends and abducts thigh

Question 37

tensor fasciae latae

Answer 37

Origin: iliac crest; insertion: lateral condyle of tibia, extends knee, rotates tibia and femur

Question 38

adductor longus

Answer 38

origin: body/inferior ramus of pubis; insertion: linea aspera; adducts, rotates, flexes thigh

Question 39

gracilis

Answer 39

origin: body/inferior ramus of pubis; insertion: tibia; flexes and rotates tibia

Question 40

rectus femoris

Answer 40

origin: anterior inferior iliac spine; insertion: patella, tibial tuberosity, lateral and medial condyles of tibia; extends knee, flexes thigh

Question 41

vastus lateralis, vastus medialis, vastus intermedius

Answer 41

extends knee

Question 42

semimembranosus

Answer 42

origin: ischial tuberosity; insertion: medial condyle of tibia; flexes knee and extends hip

Question 43

biceps femoris

Answer 43

origin: ischial tuberosity/linea aspera; insertion: head of fibula; flexes knee and extends hip

Question 44

extensor digitorum longus

Answer 44

extends toes, dorsiflexes foot

Question 45

flexor digitorum longus

Answer 45

flexes toes

Question 46

gastrocnemius

Answer 46

origin: condyles of femur; insertion calcaneus; plantar flexes foot, flexes knee