Chapter 6- Muscle System Review

Question 0

Blinks/closes eyes

Answer 0

Orbicularis occuli

Question 1

Raises eyebrows

Answer 1

Frontalis

Question 2

Closes/protrudes lips

Answer 2

Orbicularis oris

Question 3

Raises corners of mouth

Answer 3

Zygomaticus

Question 4

Compresses cheek

Answer 4

Buccinator

Question 5

Closes jaw (2)

Answer 5

Temporalis and masseter

Question 6

Pulls corners of mouth inferiorly (frown)

Answer 6

Platysma

Question 7

Flexes neck, rotates head

Answer 7

Sternocleidomastoid

Question 8

Adducts and flexes humerus

Answer 8

Pectoralis major

Question 9

Flexes vertebral column

Answer 9

Rectus abdominus

Question 10

Flexes elbow, supinates forearm

Answer 10

Biceps brachii

Question 11

Abducts arm

Answer 11

Deltoid

Question 12

Adduct thigh

Answer 12

Adductors

Question 13

Extend knee

Answer 13

Quadriceps

Question 14

Dorsiflexes and inverts foot

Answer 14

Tibialis anterior

Question 15

Extends neck and addicts scapula

Answer 15

Trapezius

Question 16

Extends and adducts humerus

Answer 16

Latissmus Dorsi

Question 17

Extends elbow

Answer 17

Triceps brachii

Question 18

Extends hip when forceful extension is required

Answer 18

Gluteus Maximus

Question 19

Flex knee and extend hip

Answer 19

Hamstrings

Question 20

Plantar flexes foot and flexes knee

Answer 20

Gastrocnemius

Question 21

Mys- and myos-

Answer 21

Muscle

Question 22

Sarco-

Answer 22

Flesh

Question 23

Innermost connective tissue that surrounds muscle fiber

Answer 23

Endomysium

Question 24

Between the two layers; fibrous membrane that surrounds a fascicle

Answer 24

Perimysium

Question 25

Outermost layer that surrounds entire muscle (bundle of fascicles)

Answer 25

Epimysium

Question 26

A bundle of muscle fibers

Answer 26

Fascicles

Question 27

Attach muscle to bones; cordlike

Answer 27

Tendon

Question 28

Attach muscles to bones; sheetlike

Answer 28

Aponeuroses

Question 29

Muscle cell membranes

Answer 29

Sarcolemma

Question 30

Contractile organelles found in cytoplasm

Answer 30

Myofibrils

Question 31

Threadlike proteins

Answer 31

Myofilaments

Question 32

Contractile units of muscle

Answer 32

Sarcomere

Question 33

Which band contains only actin?

Answer 33

Light I band

Question 34

Which band contains both actin and myosin?

Answer 34

Dark A band

Question 35

Thin myofilaments

Answer 35

Actin

Question 36

Thick myofilaments

Answer 36

Myosin

Question 37

Ability to receive and respond to stimulus

Answer 37

Irritability

Question 38

Ability to contract or shorten

Answer 38

Contractility

Question 39

One neuron and all the muscle cells it stimulates

Answer 39

Motor unit

Question 40

What is released at the atonal terminal

Answer 40

Neurotransmitters

Question 41

Junction between neuron and muscle cell

Answer 41

Neuromuscular joint

Question 42

Gap between muscle cell and axonal terminal; filled with fluid

Answer 42

Synaptic cleft

Question 43

Chemical released by axonal terminal

Answer 43

Neurotransmitter

Question 44

Stimulates muscle cells (a neurotransmitter)

Answer 44

ACh (acetylcholine)