Chapter 8 Muscles

Question 1

What is the stationary attachment end of the skeletal muscle called?

Answer 1

origin

Question 2

What is the attachment to mobile end of the skeletal muscle called?

Answer 2

insertion

Question 3

What is the prime mover that produces most of the force for muscle movement called?

Answer 3

agonist

Question 4

What is the part of the muscle action that opposes the prime mover and prevents excessive movement in muscle action?

Answer 4

antagonist

Question 5

Name
Describe function

Answer 5

occipitofrontalis m.

lift eyebrows, furrow brow

Question 6

Name
Describe function

Answer 6

orbicularis oculi mm.

eye squinting

Question 7

Name
Describe function

Answer 7

zygomaticus mm.

smiling

Question 8

Name
describe function

Answer 8

orbicularis oris m.
pucker lips

Question 9

name
describe function

Answer 9

temporalis mm.
elevation of mandible
biting/chewing

Question 10

name
describe function

Answer 10

masseter mm.
elevation of mandible
biting/chewing

Question 11

name
describe function

Answer 11

external oblique
compression of the abdominal viscera

Question 12

name
describe function

Answer 12

internal oblique
forced expiration, defecation, childbirth

Question 13

name
describe function

Answer 13

rectus abdominis
flexion/stabilization of the trunk

Question 14

name
describe function

Answer 14

transverse abdominis
wraps around spine for protection and stability

Question 15

name the blue region
describe function

Answer 15

diaphragm
inhalation

Question 16

name the blue region
describe function

Answer 16

external intercostals
increase inhalation

Question 17

name the blue region
describe function

Answer 17

internal intercostals
exhalation

Question 18

name the pink highlighted muscle
what is their main function?

Answer 18

rotator cuff
hold head of humerus in the glenoid cavity

Question 19

name the blue muscle
describe function

Answer 19

supraspinatus
abduct arm away over the head

Question 20

name the blue muscle
define function

Answer 20

infraspinatus
external rotation

Question 21

name the blue muscle
describe function

Answer 21

teres minor
external rotation

Question 22

name the blue muscle
describe function

Answer 22

subscapularis
internal rotation

Question 23

name the blue muscle
describe function

Answer 23

biceps brachii
elbow flexion

Question 24

name the blue muscle
describe function

Answer 24

triceps brachii
elbow extension

Question 25

name the blue muscle
describe function

Answer 25

gluteus maximus
hip extension
hip abduction

Question 26

name the blue muscle
describe function

Answer 26

gluteus medius
hip abduction

Question 27

name the blue group of muscles
describe function

Answer 27

quadriceps
knee extension

Question 28

name the blue muscle group
describe function

Answer 28

hamstring
knee flexion