Chapter 10 Muscles

Question 1

*Frontal belly muscle

Answer 1

Raises the eyebrows.
Pulls the scalp posteriorly.

Question 2

*Orbicularis Oculi

Answer 2

Closes the eyes.

Question 3

*Orbicularis Oris

Answer 3

Closes the lips.
Kissing
Whistling

Question 4

*Buccinator

Answer 4

Compresses the cheek.
Whistling; Sucking;

Question 5

*Masseter & Temporalis

Answer 5

Close the jaw; Elevates mandible

Question 6

*Sternocleidomastoid

Answer 6

Helps with swallowing;
Flexes, laterally rotates head.

Question 7

External intercostals

Answer 7

Pulls ribs toward each other to elevate the ribcage.
Inspiratory muscle

Question 8

Internal Intercostals

Answer 8

Draws ribs together and depresses the ribcage.
Compresses and depresses rib cage.
Causes expiration.

Question 9

Diaphragm

Answer 9

Flattens during inspiration (flattens on contraction).
Prime mover of inspiration.
Divides thoracic and abdominal cavities.

Question 10

*Rectus abdominis

Answer 10

Flexes and rotates the vertebral column.

Question 11

*External oblique
&
Internal oblique

Answer 11

Flexes vertebral column, rotates and flexes vertebral column laterally, compresses abdomen.

Question 12

*Transversus abdominis

Answer 12

Compresses abdomen.

Question 13

Photo: Muscles of the abdominal wall…

Answer 13

Question 14

*Pectoralis minor

Answer 14

Fixes ribs, protracts and depresses scapula.

Question 15

Serratus anterior

Answer 15

Rotates scapula

Question 16

*Trapezius

Answer 16

Fixes, elevates, retracts and rotates the scapula.

Question 17

Levator Scapulae

Answer 17

Elevates, abducts scapula

Question 18

Rhomboids (major/minor)

Answer 18

Fixes scapula

Question 19

*Pectoralis major

Answer 19

Flexes, adducts, medically rotates arm.

Question 20

*Deltoid

Answer 20

Abducts arm

Question 21

*Latissimus dorsi

Answer 21

Extends, adducts, medially rotates arm.

Question 22

Subscapularis

Answer 22

Medially rotates arm.

Question 23

Supraspinatus

Answer 23

Abducts arm

Question 24

Infraspinatus

Answer 24

Laterally rotates arm

Question 25

Teres major

Answer 25

Extends, medially rotates, adducts arm

Question 26

*Tríceps brachii

Answer 26

Extends forearm

Question 27

*Bíceps brachii

Answer 27

Flexes, supinates forearm

Question 28

Brachialis

Answer 28

Flexes forearm

Question 29

Pronator teres

Answer 29

Pronates forearm

Question 30

Flexor carpi radialis

Answer 30

Flexes wrist, abducts hand.

Question 31

Flexor carpi ulnaris

Answer 31

Flexes wrist, adducts hand.

Question 32

Extensor digitorum

Answer 32

Extends fingers

Question 33

Supinator

Answer 33

Supinates forearm

Question 34

*Sartorius

Answer 34

Flexes, abducts, laterally rotates thigh, flexes knee.

Question 35

Adductor magnus

Answer 35

Adducts, flexes, extends, medially rotates thigh.

Question 36

Adductor longus

Answer 36

Adducts, flexes, medially rotates thigh.

Question 37

*Gracilis

Answer 37

Adducts the thigh. Flexes and medially rotates the leg.

Question 38

*Rectus femoris

Answer 38

Extends the leg and flexes thigh at the hip.

Question 39

Vastus lateralis Vastus medalis Vastus intermedius

Answer 39

Extends knee

Question 40

*Gluteus maximus

Answer 40

Extends thigh

Question 41

*Gluteus medius

Answer 41

Abducts, medially rotates thigh

Question 42

*Bíceps femoris

Answer 42

Extends thigh, flexes the leg.

Question 43

Semitendinosus

Answer 43

Extends thigh, flexes knee

Question 44

Semimembranosus

Answer 44

Extends thigh, flexes knee

Question 45

*Tibialis anterior

Answer 45

Dorsiflexes foot

Question 46

*Gastrocnemius

Answer 46

Plantar flexes foot

Question 47

Soleus

Answer 47

Plantar flexes foot

Question 48

Teres Minor

Answer 48

Question 49

Extensor Carpi Radialis Longus

Answer 49

Question 50

Extensor carpi ulnaris

Answer 50

Question 51

Tensor Fascia Latae

Answer 51

Question 52

Adductor Longus

Answer 52

Question 53

Adductor Magnus