muscle review

Question 1

cause of muscle fatigue

Answer 1

oxygen debt

Question 2

collagen sheath around a fascicle

Answer 2

perimysium

Question 3

abducts arm

Answer 3

deltoid

Question 4

connects the muscle to the bone

Answer 4

tendon

Question 5

bending or movement of a limb toward the midline of the body

Answer 5

adduction

Question 6

light bands of myofibrils, contains only action

Answer 6

I band

Question 7

crosses the legs

Answer 7

sartorius

Question 8

ability to receive and respond to a stimulus

Answer 8

excitability

Question 9

flexes elbow and supinates forearm

Answer 9

biceps brachii

Question 10

movement where the angle of the joint is increased

Answer 10

extension

Question 11

pulls scalp posteriorly

Answer 11

occipitals

Question 12

bundle of muscle fibers

Answer 12

fascle

Question 13

pulls corners of mouth inferiorly, frowning muscle

Answer 13

platysma

Question 14

contractile unit of myofibrils

Answer 14

sacromere

Question 15

adducts and flexes the arm, rotates the arm medially

Answer 15

pectoralis major

Question 16

closes and protrudes lips, kissing muscle

Answer 16

orbicularis oris

Question 17

since muscle fibers fully contract, this allows for the varying degree of muscle movements

Answer 17

graded response

Question 18

midline inside light I band,site for actin attachment

Answer 18

z disc

Question 19

has the major responsibility for producing a particular movement

Answer 19

prime mover

Question 20

one neuron and all the muscle fivers it stimulates

Answer 20

motor unit

Question 21

thin filaments are composed of

Answer 21

actin

Question 22

raises eyebrow, wrinkles forehead

Answer 22

frontalis

Question 23

ability to shorten

Answer 23

contractability

Question 24

straited, voluntary, mulinucleate, generates heat

Answer 24

skeletal muscles

Question 25

bending or moving a limb away from the body midline

Answer 25

abduction

Question 26

movement where the angle of the joint is decreased

Answer 26

flexion

Question 27

dark bands of myofibrils, contains both actin and myosin

Answer 27

A band

Question 28

opposes or reverses a particular movement

Answer 28

antagonist

Question 29

overcoat around entire muscle, bundles fascicles together

Answer 29

epipmysiu

Question 30

extends the knee, located on the outer portion of the knee

Answer 30

vastus laterals

Question 31

muscle fiber's endoplasmic reticulum, releases calcium during muscle contraction

Answer 31

sarcoplasmic reticulum

Question 32

attachment of the muscle to the bone that is relatively fixed

Answer 32

muscle orgin

Question 33

flexes forearm

Answer 33

brachialis

Question 34

extends the thigh, flexes the knee, rotates the tibia medially

Answer 34

semitendious

Question 35

prime mover for plantar flexion of the foot

Answer 35

gastrocemius

Question 36

what disappears during a muscle contraction according the slidung filament theory, contains only myosine

Answer 36

h zone

Question 37

raises the corners of the mouth upward, smiling muscle

Answer 37

zygomaticus

Question 38

prime mover for respiration

Answer 38

diaphragm

Question 39

dorsiflextion, inverts foot

Answer 39

tibialis anterior

Question 40

attachment of the muscle to the bone which is relatively movable

Answer 40

muscle insertion

Question 41

involuntary, not striated, uninucleate, in visceral organs

Answer 41

smooth muscles

Question 42

blinks and closes eyes, squints and winks

Answer 42

orbicularis occuli

Question 43

correct name for a muscle ceLL

Answer 43

muscle fiber

Question 44

theory which involves actin and myosine sliding past each other but not shortening

Answer 44

sliding filament theory

Question 45

results from the smooth continuous contraction of a muscle without evidence of relaxation, stimulated rapidly, can be normal and desirable

Answer 45

tetanus

Question 46

thick filmanents are composed of

Answer 46

myosine

Question 47

connective tissues around each other

Answer 47

endomysium

Question 48

flexes neck, rotates head

Answer 48

sternocleidomastoid

Question 49

flexes and rotates the vertebral column

Answer 49

external oblique

Question 50

closes the jaw, used in eating

Answer 50

masseter

Question 51

plasma membrane of a muscle fiber

Answer 51

sarolemma

Question 52

helps a muscle by producing the same movement of reducing undesirable movement

Answer 52

synergist

Question 53

plantar flexion of the foot

Answer 53

soleus

Question 54

extends, adducts and medially rotates the humerus

Answer 54

latissiumus dorsi

Question 55

extends the thigh

Answer 55

gluteus maximus

Question 56

hold a bone still or stablizes it so that all the tension can be sued to move the insertion bone

Answer 56

fixator

Question 57

involuntary, striated, found in the heartm acts as a pump

Answer 57

cardiac mucle

Question 58

flexes the knee and extends the hip

Answer 58

biceps femori

Question 59

extends forearm

Answer 59

triceps brachii

Question 60

energy source, needed for muscle contraction

Answer 60

atp

Question 61

dark line in the middle of the h zone

Answer 61

m line