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Chapter 6 Review GAME

Total questions: 55

Worksheet time: 40mins

Name
Class
Date
1.

Myofibrils are composed of _______________ and _____________________ filaments.

a)

sarcolemma, sarcoplasm

b)

Actin, Myosin

c)

ADP, ATP

d)

Collagen, Elastin

2.
a)


a lack of ATP, which prevents muscle relaxation because calcium cannot return to the sarcoplasmic reticulum

b)

excessive ATP, which prevents muscle relaxation

c)

None of these

d)

excessive ATP, which causes muscle contraction

3.
a)

recruitment

b)

depolarization

c)

hyperpolarization

d)

summation

4.

When a muscle undergoes atrophy in response to disuse:
(Hint: See page 195)

a)


the number of mitochondria decreases

b)

the size of actin and myosin filaments decreases

c)


the muscle gains strength

d)

capillary networks reduce

5.

What is muscle tone (see page 195)?

a)

The ability of a muscle to maintain a continuous and passive partial contraction.

b)

The maximum force a muscle can exert in a single effort.

c)

The speed at which a muscle can contract.

d)

The endurance level of a muscle during prolonged activity.

6.

A muscle cramp is due to lack of _____ needed to return calcium to the ___________________________.

a)

ATP, sarcoplasmic reticulum

b)

ADP, T-Tubules

c)

oxygen, sarcolemma

d)

potassium, neuron

7.

A partial but sustained contraction is known as muscle ____________.

a)

tone

b)

tetanus

c)

twitch

d)

recruitment

8.

Neurotransmitters are stored in vesicles in the ___________________________.

a)

motor neuron axon terminal

b)

myofibrils

c)

sarcolemma

d)

motor end plate

9.
a)

T (transverse) tubules

b)

Sarcoplasmic reticulum

c)

Myofibrils

d)

Mitochondria

10.

The amount of oxygen needed to convert lactic acid to glucose is called _____________________.

a)

oxygen debt (defecit)

b)

oxygen surplus

c)

oxygen reserve

d)

oxygen balance

11.

How does smooth muscle contract differently compared to skeletal muscle?

a)

Smooth muscle contracts involuntarily and slowly, while skeletal muscle contracts voluntarily and rapidly.

b)

Smooth muscle contracts voluntarily and rapidly, while skeletal muscle contracts involuntarily and slowly.

c)

Both smooth and skeletal muscles contract involuntarily and rapidly.

d)

Both smooth and skeletal muscles contract voluntarily and slowly.

12.
a)

a contractile unit within a myofibril

b)

a portion of the sarcoplasmic reticulum

c)

a group of myofibrils

d)

the cytoplasm of a muscle fiber/cell

13.

Actin has binding sites for _____________.

a)

Actin has binding sites for various proteins, including myosin, tropomyosin, and others.

b)

Actin has binding sites for carbohydrates, lipids, and nucleic acids.

c)

Actin has binding sites for vitamins, minerals, and water.

d)

Actin has binding sites for hormones, enzymes, and antibodies.

14.

All-or-none response means: when a fiber _______________, it does so to its _____________ extent.

a)

fires; maximum

b)

fires; minimum

c)

contracts; partial

d)

relaxes; full

15.

A motor unit includes: _______________ and _____________________.

a)

A motor unit includes a motor neuron and the muscle fibers it innervates.

b)

A motor unit includes a sensory neuron and the muscle fibers it innervates.

c)

A motor unit includes a motor neuron and the tendons it connects to.

d)

A motor unit includes a sensory neuron and the tendons it connects to.

16.

The enzyme acetylcholinesterase causes acetylcholine to ___________________.

a)

be broken down.

b)

be synthesized.

c)

be stored in vesicles.

d)

be converted to dopamine.

17.

Muscle fatigue is due to a build-up of ___________________, _________ imbalance, and a lack of ______.

a)

lactic acid, electrolyte, energy

b)

carbon dioxide, protein, oxygen

c)

glucose, mineral, water

d)

ammonia, vitamin, glucose

18.

A muscle that assists a prime mover is a(n) ________________ - example = ____________________

a)

synergist

b)

antagonist

c)

fixator

d)

agonist

19.

A muscle that opposes a prime mover is a(n) ____________________

a)

antagonist

b)

synergist

c)

agonist

d)

fixator

20.

The minimal stimulus needed to elicit a contraction is called _________________________.

a)

minimal stimulus

b)

threshold stimulus

c)

submaximal stimulus

d)

maximal stimulus

21.

The organs of the muscular system are the _____________________.

a)

muscles

b)

bones

c)

nerves

d)

ligaments

22.

How do muscles help maintain body temperature?

a)

They generate heat.

b)

They absorb cold.

c)

They store energy.

d)

They release moisture.

23.

How is cardiac muscle different than smooth muscle?

a)

Cardiac muscle is voluntary, while smooth muscle is involuntary.

b)

Cardiac muscle is striated, while smooth muscle is non-striated.

c)

Cardiac muscle is found in the digestive system, while smooth muscle is found in the heart.

d)

Cardiac muscle has a single nucleus, while smooth muscle has multiple nuclei.

24.

How is cardiac muscle different than skeletal muscle?

a)

Cardiac muscle is voluntary, while skeletal muscle is involuntary.

b)

Cardiac muscle has intercalated discs, while skeletal muscle does not.

c)

Cardiac muscle is multinucleated, while skeletal muscle is not.

d)

Cardiac muscle is attached to bones, while skeletal muscle is not.

25.

Label the Muscle

a)

Perimysium

b)

Epimysium

c)

Endomysium

d)

Myofibril

e)

Myofilament

1
2
3
4
5
1)
2)
3)
4)
5)
26.

Skeletal muscle fibers are made up of tiny rods, as pictured in 5, called:

a)

myofibrils

b)

endomysium

c)

muscle fibers

d)

fascicles

27.

Which of the following numbers indicates the location of a muscle fascicle?

a)

1

b)

2

c)

3

d)

4

28.

Which layer of tissue is represented by #1

a)

myofibrils

b)

endomysium

c)

epimysium

d)

fascicles

29.

Which of the following indicates the location of the perimysium?

a)

1

b)

2

c)

3

d)

4

30.
The plasma membrane of a skeletal muscle cell is called the:
a)
sarcomere
b)
myofilament
c)
sarcolemma
d)
sarcoplasm
31.

Which label is the muscle fiber?

a)

A

b)

B

c)

C

d)

D

32.

What is another name #1?

a)

Skeletal muscle

b)

Cardiac muscle

c)

Smooth muscle

d)

Myofiber

33.

What is another name #2? (Hint: It is a muscle layer)

a)

Skeletal muscle

b)

Epimysium

c)

Perimysium

d)

Endomysium

34.

What number covers a fascicle?

a)

#6

b)

#5l

c)

#4

d)

#10

35.

Reorder the following from LARGEST structure down to smallest structure

a)

muscle

b)

fascicle

c)

muscle fiber

d)

myofibril

e)

sarcomere

1)
2)
3)
4)
5)
36.

Reorder the following from LARGEST structure down to smallest structure

a)

epimysium

b)

perimysium

c)

endomysium

1)
2)
3)
37.

What structure does letter A represent?

a)

Z disc

b)

I band

c)

A band

d)

Sarcomere

38.

What structure does letter B represent?

a)

Z disc

b)

I band

c)

A band

d)

Sarcomere

39.

What structure does letter C represent?

a)

Z disc

b)

I band

c)

A band

d)

Sarcomere

40.

What structure does letter D represent?

a)

Z disc

b)

I band

c)

A band

d)

Sarcomere

41.

Identify the sarcomere in the diagram above.

a)

A

b)

B

c)

F

d)

G

e)

H

42.

Identify the I band in the diagram above.

a)

A

b)

D

c)

F

d)

G

e)

H

43.

Identify the zone of overlap in the diagram above.

a)

A

b)

D

c)

F

d)

G

e)

H

44.

Identify the structure that the thin filaments are anchored to in the diagram above.

a)

A

b)

B

c)

C

d)

D

e)

E

45.

Identify the structure that the thick filaments are anchored to in the diagram above.

a)

A

b)

B

c)

C

d)

D

e)

E

46.

Which protein(s) is/are found in the thin myofilament? Select all that apply.

a)

actin

b)

myosin

c)

troponin

d)

tropomyosin

47.

Which of the following does not occur during sarcomere shortening?

a)

I band narrows

b)

A band narrows

c)

H zone narrows

d)

zone of overlap increases

48.
What happens to the Z lines during a sarcomere contraction?
a)
It disappears
b)
gets closer together
c)
It gets bigger
d)
None of these
49.
What happens to the H zone during a sarcomere contraction?
a)
It disappears
b)
It gets closer together
c)
It gets bigger
d)
None of these
50.
What state is the sarcomere in #3
a)
Relaxed
b)
Contracting
c)
Fully Contracted
d)
None of the above
51.
What state is the sarcomere in #2
a)
Relaxed
b)
Contracting
c)
Fully Contracted
d)
None of the above
52.
What state is the sarcomere in #1
a)
Relaxed
b)
Contracting
c)
Fully Contracted
d)
None of the above
53.

Match the following

a)
1.

cardiac muscle

b)
2.

smooth muscle

c)
3.

skeletal muscle

54.
Which type of muscle cells are voluntary? 
a)
Skeletal
b)
Cardiac
c)
Medial 
d)
Smooth 
55.
a)

decompose

b)

bind to actin

c)

form cross bridges

d)

be secreted from the motor end plate

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