Chapter 11: muscles of the Axial Skeleton

Question 1

What muscle is located above the eyebrows and moves them upwards

Answer 1

Frontalis

Question 2

What muscle retracts the scalp

Answer 2

Occipitalis

Question 3

What muscle closes the eye

Answer 3

Obicularis oculi

Question 4

What muscle draws the mouth upwards and laterally like when laughing

Answer 4

Zygomaticus major

Question 5

What muscle elevates the upper lip such as in snearing

Answer 5

Zygomaticus minor

Question 6

What muscle encircles the mouth and closes, purses, and protrudes lips

Answer 6

obicularis oris

Question 7

Which muscle draws the corners of lips laterally to make a serious or awkard face

Answer 7

Risorious

Question 8

This muscle pulls lower lip and angle of mouth downward

Answer 8

Platysma

Question 9

compresses cheeks

Answer 9

buccinator

Question 10

elevates and protrudes lower lip,elevates and wrinkles chin

Answer 10

Mentalis

Question 11

closes jaw; elevates and retracts mandible; mains position at rest; lateral and medial movements (biting and chewing)

Answer 11

Temporalis

Question 12

Prime mover of jaw closer; elevates mandible

Answer 12

masseter

Question 13

depresses and protrudes tongue; draws tongue to one side

Answer 13

genioglossus

Question 14

retracts and elevates tongue

Answer 14

styloglossus

Question 15

depresses tongue

Answer 15

hyoglossus

Question 16

Suprahyoid Group

Answer 16

Mylohyoid, geniohyoid, stylohyoid, digastric; help form the floor of the oral cavity, anchor tongue, and elevate hyoid and move larynx superiorly

Question 17

Infrahyoid Group

Answer 17

Thyrohyoid, omohyoid, sternothyroid, sternohyoid; fix hyoid so suprahyoids can open mouth, depress hyoid and larynx during swallowing and speaking

Question 18

Flexes and laterally rotate the head; prime mover of neck flexion

Answer 18

sternocleidomastoid

Question 19

seperates thoracic and abdominopelvic cavities; prime mover of respiration

Answer 19

diaphragm

Question 20

elevates and protracts ribs during inhalation

Answer 20

External Intercostals

Question 21

depresses and retracts ribs during forced exhalation

Answer 21

internal intercostals

Question 22

4 muscles of anterior body wall

Answer 22

external abdominal oblique, internal abdominal oblique, transverse abdominal, rectus abdominus

Question 23

contralateral rotation of the waist

Answer 23

external abdominal oblique

Question 24

ipsilateral rotation of the waist

Answer 24

internal abdominal oblique

Question 25

does not contribute to movements of the vertebral column

Answer 25

transverse abdominis

Question 26

Muscles running vertically from sternum to pubis and flexes lumbar region of vertebral column, flexes waist

Answer 26

rectus abdominis

Question 27

Erector spinae group

Answer 27

Iliocostalis, longissimus, spinalis; prime movers of back extension, 3 parallel columns running from cranium to sacrum

Question 28

Composed of 2 muscles, pierced by rectum, urethra, and vagina

Answer 28

pelvic diaphragm

Question 29

supports pelvic viscera, resists downward pressure when sneezing, coughing, vomiting; pubis to spine of ischium

Answer 29

levatator Ani

Question 30

supports pelvic viscera; supports coccyx and pulls it forward after defecating and childbirth

Answer 30

coccygeus

Question 31

diamond shaped zone between the thighs; inferior to the pelvic floor

Answer 31

perineum

Question 32

Urogentital triangle

Answer 32

anterior region of the perineum

Question 33

Anal triangle

Answer 33

posterior region of the perineum

Question 34

prevents involuntary urination in males and females

Answer 34

external urethral sphincter

Question 35

assist in urine retention present in females

Answer 35

compressor urethrae

Question 36

external anal sphincter

Answer 36

prevents involuntary defecation