Muscles and Functions

Question 1

Functions of Frontalis

Answer 1

• draws scalp forward
• raises eyebrows
• wrinkle forehead

Question 2

Functions of Occipitalis

Answer 2

draws scalp backward

Question 3

Functions of Orbicularis oris

Answer 3

moves lips

Question 4

Functions of Zygomaticus major

Answer 4

draws angle of mouth up = smile

Question 5

Functions of Buccinator

Answer 5

compresses cheek, caves in, like sucking a straw

Question 6

Functions of Orbicularis oculi

Answer 6

closes the eyes

Question 7

Functions of Masseter

Answer 7

elevates mandible

Question 8

Functions of Temporalis

Answer 8

elevates and retracts mandible

Question 9

Functions of Sternocleidomastoid

Answer 9

• flex cervical vertebrae,
• rotates face to the side

Question 10

Functions of Rectus abdominis

Answer 10

• compresses abdomen,
• flexes lumbar vertebrae

Question 11

Functions of External oblique

Answer 11

compress abdomen

Question 12

Functions of Diaphragm

Answer 12

• floor of thoracic cavity,
• contracts for inhalation

Question 13

Functions of Internal intercostals

Answer 13

draws adjacent ribs together during forced exhalation

Question 14

Functions of External intercostals

Answer 14

elevates ribs during inhalation

Question 15

Functions of Pectoralis major

Answer 15

flex, adduct, and rotate arm medially

Question 16

Functions of Serratus anterior

Answer 16

rotates scapula upward and laterally, elevates ribs

Question 17

Trapezius

Answer 17

elevates clavicle, adducts scapula

Question 18

Functions of Levator scapulae

Answer 18

elevates scapula and rotates slightly downward

Question 19

Functions of Rhomboideus major

Answer 19

adducts scapula and rotates slightly downward

Question 20

Functions of Latissimus dorsi

Answer 20

extend, adduct and rotate arm medially

Question 21

Functions of Deltoid

Answer 21

abducts, flexes, extends, medially and laterally rotates arm

Question 22

Functions of Teres major

Answer 22

extends arm, assists in adduction

Question 23

Functions of Teres minor

Answer 23

rotates arm laterally, extends and adducts arm

Question 24

Functions of Biceps brachii

Answer 24

flexes and supinates the forearm, flexes the arm

Question 25

Functions of Brachioradialis

Answer 25

flexes forearm, role in supination, pronation of forearm

Question 26

Functions of Triceps brachii

Answer 26

extends forearm and arm

Question 27

Functions of Flexor carpi radialis

Answer 27

flex and abduct wrist

Question 28

Functions of Flexor carpi ulnaris

Answer 28

flex and adduct wrist

Question 29

Functions of Extensor digitorum

Answer 29

extend phalanges

Question 30

Functions of Gluteus maximus

Answer 30

extends, rotates thigh laterally

Question 31

Functions of Tensor fasciae latae

Answer 31

flexes and abducts thigh

Question 32

Functions of Rectus femoris (Quadriceps)

Answer 32

extend leg, flex thigh

Question 33

Functions of Vastus lateralis (Quadriceps)

Answer 33

extend leg

Question 34

Functions of Vastus medialis (Quadriceps)

Answer 34

extend leg

Question 35

Functions of Vastus intermedius (Quadriceps)

Answer 35

extend leg

Question 36

Functions of Biceps femoris (Hamstrings)

Answer 36

lex leg, extend thigh

Question 37

Functions of Semitendinosus (Hamstrings)

Answer 37

flex leg, extend thigh

Question 38

Functions of Semimembranosus (Hamstrings)

Answer 38

flex leg, extend thigh

Question 39

Functions of Gracilis

Answer 39

adducts thigh, flex leg

Question 40

Functions of Sartorius

Answer 40

flex leg, flex thigh, rotate thigh

Question 41

Functions of Gastrocnemius

Answer 41

plantar flexion of foot (point toe), flex leg

Question 42

Functions of Tibialis anterior

Answer 42

dorsiflexes, inverts foot

Question 43

Functions of Platysma

Answer 43

pulls the lower lip back.