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Ch 5 Muscular System Quiz

Total questions: 54

Worksheet time: 13hrs 32mins

Name
Class
Date
1.

All of theses except one are functional characteristics of muscles

a)

movement

b)

regulates blood glucose concentration

c)

thermoregulation

d)

supporting soft tissues

e)

regulates blood sodium concentration

2.

What type of tissue is Striated and voluntary

a)

Skeletal

b)
Cardiac
c)
Smooth
d)

Not a muscle tissue

3.

This type of tissue is involuntary striated.

a)
Cardiac Muscle
b)
Skeletal Muscle
c)
Smooth Muscle
d)

Not a muscle tissue

4.

What type of muscle tissue is nonstriated and involuntary?

a)
Cardiac Muscle
b)
Smooth Muscle
c)
Skeletal Muscle
d)

Not a muscle tissue

5.

Which of the following is not a function of the muscular system?

a)

Maintenance of posture

b)

Production of body heat

c)

Immune system support

d)

Constriction of organs and vessels

6.

Smooth muscle and cardiac muscle are similar in that they both

a)

are striated.

b)

have multiple nuclei.

c)

are under involuntary control.

d)

are widely distributed in the body.

7.

Which muscle type is striated?

a)

cardiac

b)

skeletal

c)

smooth

d)

cardiac and skeletal

8.
Which muscle tissue is attached to bones?
a)
cardiac
b)
smooth
c)
skeletal
d)
Both A and B
9.
The plasma membrane of a skeletal muscle cell is called the:
a)
sarcomere
b)
myofilament
c)
sarcolemma
d)
sarcoplasm
10.

Letter A

The connective tissue membrane that surrounds a myocyte?

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

11.

The Connective tissue membrane that covers the muscle cell

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

12.

The membrane that surrounds muscle fibers, forming fascicles

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

13.

Letter F represents a collection of muscle fibers bound together by the perimysium

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

14.

Letter B

The connective tissue membrane extends beyond the muscle fiber forming tendons

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

15.

Letter B

The connective tissue membrane surrounds the entire muscle

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

16.

A this separates neighboring muscles and groups

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

17.

This is formed when the perimysium bundles fibers together

a)

Endomysium

b)

Perimysium

c)

Epimysium

d)

Fascicle

e)

Fascia

18.

Contractile unit of a muscle which is also the functional unit of a muscle is ...

a)

sarcomere

b)

motor unit

c)

fascicle

d)

myofibril

19.

a rope-like like fibrous connective tissue that connects muscles to bones (are extensions of muscles)

a)

tendons

b)

aponeurosis

c)

muscles

d)

ligaments

20.

a sheet like thin fibrous connective tissue that connects muscles to bones (are extensions of muscles)

a)

tendons

b)

aponeuroses

c)

muscles

d)

ligaments

21.
A sarcomere is
a)
A protein filament or fiber
b)
The basic contractile unit of muscle contraction
c)
An organelle
d)
An organ
22.

Which Letter Represents the Z disc

a)

C

b)

B

c)

D

d)

E

e)

G

23.

Which Letter Represents the M Line

a)

C

b)

B

c)

D

d)

E

e)

G

24.

What does Ca++ bind with to move tropomyosin out of the way to start the contracting process?

a)

Nebulin

b)

Troponin

c)

Titin

d)

Actin

25.
A mitochondria's role in muscle contraction is the production of...
a)
Synthesis of ATP
b)
Metabolism of ATP
c)
Synthesis of Proteins
d)
Metabolism of Worn out Proteins
26.

Which ion, when present, changes the conformation of actin?

a)
Calcium
b)
Sodium
c)
Potassium
d)
Lithium
27.

What opens the ligand gated sodium channel?

a)
Calcium Ion Binding to the channel protein.
b)

Acetylcholine binding to the receptor.

c)
Electrical Signal opening the channel protein.
d)
Acetylcholinesterase binding to the channel protein.
28.
Calcium that will eventually enter the muscle cell to bind with troponin is stored in the...
a)
T-Tubule of the Muscle Cell
b)
Sarcoplasmic Reticulum of the Muscle Cell
c)
The Sarcolemma of the Muscle Cell
d)
The interstitial space outside the muscle cell near the pre-synaptic terminal.
29.

What is necessary for the myosin to release the actin?

a)

ATP

b)

Calcium

c)

ADP

d)

Sodium

30.

What is a crossbridge?

a)

Where myosin binds to actin

b)

Where the calcium crosses into the cytoplasm

c)

Where calcium binds with troponin

d)

Where titin and myosin are connected

31.

What is the name of the place where a nerve meets a muscle fiber

a)

Nerve junction

b)

Neuromuscular junction

c)

Muscle junction

d)

Crossbridge

32.

Myofibril is an arrangement of ___________ within a muscle fibre.

a)

Bands

b)

Sacromeres

c)

Proteins

d)

Crossbridges

33.

_________ carries the impulse from the sarcolemma deep into the myofibrils where it comes in contact with the sarcoplasmic reticulum.

a)

T-Tubules

b)

Synapses

c)

Sarcoplasm

d)

Neurotransmitters

34.

Identify the structure. It binds to thin filamentous actin, and uses ATP hydrolysis to generate force and "walk" along the thin filament.

a)

actin

b)

myosin head

c)

tropomyosin

d)

troponin

e)

cross bridge

35.

Which of the following is not a function of the myosin heads?

a)

Release energy through the breakdown of ATP

b)

Form cross-bridges with the active sites on actin molecules

c)

Produce tropomyosin to facilitate binding to actin molecules

d)

Bend and straighten during contraction due to the hinge attaching it to the rod portion

36.
Identify one factor that can cause the first sodium channel to open in a muscle cell.  
a)
Calcium ions being released from the sarcoplasmic reticulum.
b)
Acetylcholine being released from the motor neuron
c)
Calcium ions binding to troponin
d)
ATP causing the myosin heads to pop up.  
37.
A motor unit is made up of _______________.
a)
all the muscle fibers within a given muscle
b)
a motor neuron and the muscle fibers it innervates
c)
all the neurons going into an individual section of the body
d)
a fascicle and a nerve
38.

Which Letter Represents the I band

a)

C

b)

B

c)

D

d)

E

e)

A

39.

Which Letter Represents the Actin Filament

a)

C

b)

B

c)

G

d)

E

e)

D

40.

Letter A

represents

a)

axon terminal

b)

axon hillocks

c)

T tubule

d)

synaptic cleft

e)

Acetylcholine

41.

Letter B

represents the neurotransmitter

a)

axon terminal

b)

axon hillocks

c)

T tubule

d)

synaptic cleft

e)

Acetylcholine

42.

Letter C

represents the space between the neuron and the sarcolemma

a)

axon terminal

b)

axon hillocks

c)

T tubule

d)

synaptic cleft

e)

Acetylcholine

43.

Letter E

represents

a)

axon terminal

b)

axon hillocks

c)

T tubule

d)

synaptic cleft

e)

Acetylcholine

44.

Letter E

represents

a)

axon terminal

b)

axon hillocks

c)

T tubule

d)

synaptic cleft

e)

Acetylcholine

45.

Identify the Structure at letter A

a)

T tubules

b)

Sarcoplasmic reticulum

c)

Mitochondria

d)

Myofibril

e)

Thick filament

46.

Identify the Structure at letter C

a)

T tubules

b)

Sarcoplasmic reticulum

c)

Mitochondria

d)

Myofibril

e)

Thick filament

47.

Identify the Structure at letter F

a)

T tubules

b)

Sarcoplasmic reticulum

c)

Mitochondria

d)

Myofibril

e)

Thick filament

48.

Identify the Structure at letter I

a)

T tubules

b)

Sarcoplasmic reticulum

c)

Mitochondria

d)

Myofibril

e)

Thick filament

49.

Identify the Structure at letter G

a)

T tubules

b)

Sarcoplasmic reticulum

c)

Mitochondria

d)

Myofibril

e)

Thick filament

50.

Stage 1

a)

The active site on actin is exposed as Ca+ binds to troponin

b)

The Myosin head forms a cross-bridge with actin

c)

The ATPase of the myosin head releases a phosphate resulting in the power stroke

d)

A new molecule of ATP attaches releasing the cross-bridge

51.

Stage 2

a)

The active site on actin is exposed as Ca+ binds to troponin

b)

The Myosin head forms a cross-bridge with actin

c)

The ATPase of the myosin head releases a phosphate resulting in the power stroke

d)

A new molecule of ATP attaches releasing the cross-bridge

52.

Stage 3

a)

The active site on actin is exposed as Ca+ binds to troponin

b)

The Myosin head forms a cross-bridge with actin

c)

The ATPase of the myosin head releases a phosphate resulting in the power stroke

d)

A new molecule of ATP attaches releasing the cross-bridge

53.

Stage 4

a)

The active site on actin is exposed as Ca+ binds to troponin

b)

The Myosin head forms a cross-bridge with actin

c)

The ATPase of the myosin head releases a phosphate resulting in the power stroke

d)

A new molecule of ATP attaches releasing the cross-bridge

54.

At what point does a muscle contraction occur?

a)

At the same moment sodium (Na) depolarizes the cell.

b)

As the action potential travels down the axon of a neuron.

c)

As soon as myosin binds to actin and pulls it towards the center of the sarcomere.

d)

As soon as calcium binds too troponin on an actin molecule.

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