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Muscles

Total questions: 54

Worksheet time: 33mins

Name
Class
Date
1.
Smooth muscle and cardiac muscle are considered _____ muscles because we can’t control them consciously.
a)
Immovable
b)
Involuntary
c)
Skeletal
d)
none of the above
2.

____________ attaches to actin to form the cross bridge.

a)

Troponin

b)

Tropomyosin

c)

Myosin

d)

Calcium

3.
Which is more true to cause muscle contraction?
a)
Actin Pulls on the myosin
b)
Myosin Pulls on the Titin
c)
Myosin Pulls on Actin
d)
Actin Pulls on Titin
4.
What is the name of the thick myofilaments?
a)
Actin
b)
Myosin
c)
Myoglobin
d)
Titan
5.
What is the name of the thin myofilaments in the muscle cell?
a)
Actin
b)
Myosin
c)
Myoglobin
d)
Titan
6.
Contractions are generated by
a)
shortening of thick filaments
b)
shortening of thin filaments
c)
sliding of thin filaments past thick filaments
d)
"accordian-like" folding of thick and thin filaments
7.
The actin is represented by the letter
a)
A
b)
B
c)
C
d)
D
8.
Calcium:
a)
causes ATP binding to actin
b)
increases the action potential along the sarcolemma
c)
binds to proteins on myosin
d)
triggers the binding of myosin to actin
9.
When a muscle contracts, it _______
a)
gets longer
b)
gets shorter
c)
gets thinner
d)
grows hair
10.
states that the muscle fibers shorten as the actin and myosin filaments pull on each other
a)
threshold stimulus theory
b)
sliding filament theory
c)
neurotransmitter theory
d)
all or none principle
11.

What part of the muscle fiber stores Ca ions and releases them when stimulated?

a)

T tubule

b)

Sarcolemma

c)

Nucleus

d)

Sarcoplasmic reticulum

12.

What is the name of the location where the neuron and muscle fiber meet?

a)

Sarcoplasm

b)

Sacolemma

c)

Neuromuscular junction

d)

Axon terminal

13.

Which of these occurs first during a muscle contraction?

a)

The nerve signal reaches the neuromuscular junction

b)

Ach is released and opens Na ion channels

c)

The sarcomere shortens

d)

The myosin binds to the actin

14.

Which of these occurs last during a muscle contraction?

a)

The nerve signal reaches the neuromuscular junction

b)

Ach is released and opens Na ion channels

c)

The sarcomere shortens

d)

The myosin binds to the actin

15.
A sarcomere is
a)
A protein filament or fiber
b)
The basic contractile unit of muscle contraction
c)
An organelle
d)
An organ
16.
The part of the sarcomere that C (Blue) refers to is the?
a)
Actin
b)
Myosin
c)
Troponin
d)
Tropomyosin
17.
The part of the sarcomere that D (Red) refers to is the?
a)
Actin
b)
Myosin
c)
Troponin
d)
Tropomyosin
18.
What state is the sarcomere in #1
a)
Relaxed
b)
Contracting
c)
Fully Contracted
d)
None of the above
19.
What state is the sarcomere in #2
a)
Relaxed
b)
Contracting
c)
Fully Contracted
d)
None of the above
20.

What is necessary for the myosin to release the actin?

a)

ATP

b)

Calcium

c)

ADP

d)

Sodium

21.

When a muscle is in a contracted position, what is the relationship between actin filaments?

a)

They are on top of one another

b)

They are beside each other

c)

They are close to each other

d)

They are far apart from each other

22.

When a muscle is relaxed and in a lengthened position, what is the relationship between actin filaments?

a)

They are on top of one another

b)

They are beside each other

c)

They are close to each other

d)

They are far apart from each other

23.

Skeletal Muscle contraction is initiated when the ________ sends a message to the muscle cell.

a)

Muscle cell

b)

Gland

c)

Neuron

d)

None of the above

24.
Which type(s) of muscle tissue have visible striations
a)
Only Cardiac Muscle
b)
Only Skeletal Muscle
c)
Only Smooth Muscle
d)
Skeletal and Cardiac Muscle
25.

moving the foot in an upward position is

a)

hyperextension

b)

dorsiflexion

c)

plantar flexion

26.

Moving your leg away from the mid line is

a)

circumduction

b)

adduction

c)

abduction

27.

Chronic widespread pain, numbness and tingling in arms could be

a)

muscular dystrophy

b)

fibromyalgia

c)

atrophy

28.

What type of muscle tissue is this?

a)

Cardiac

b)

Smooth

c)

Skeletal

d)

Meat Muscle

29.

What type of muscle tissue is this?

a)

Cardiac

b)

Smooth

c)

Skeletal

d)

Meat Muscle

30.

What type of muscle tissue is this?

a)

Cardiac

b)

Smooth

c)

Skeletal

d)

Meat Muscle

31.

This type of muscle is?

a)

Voluntary

b)

Involuntary

32.

This type of muscle is?

a)

Voluntary

b)

Involuntary

33.

This type of muscle is?

a)

Voluntary

b)

Involuntary

34.

Where would this type of muscle be found?

a)

Heart

b)

Internal Organs

c)

Attached to the Skeleton

35.

Where would this type of muscle be found?

a)

Heart

b)

Internal Organs

c)

Attached to the Skeleton

36.

Where would this type of muscle be found?

a)

Heart

b)

Internal Organs

c)

Attached to the Skeleton

37.

Myofibrils are composed primarily of

a)

actin and myosin

b)

ATP and ADP

c)

Troponin

d)

Tropomyosin

38.

The botulinus toxin that causes botulism acts by

a)

preventing the release of acetylcholine

b)

promoting the release of acetylcholine

c)

Preventing decomposition of acetylcholine

d)

none of the above

39.

The enzyme cholinesterase causes acetylcholine to

a)

be secreted from the motor end plate.

b)

form cross bridges.

c)

bind to actin.

d)

decompose.

40.

Which cell organelle provides energy for muscle contraction?

a)

lysosome

b)

nucleus

c)

endoplasmic reticulum

d)

mitochondria

41.

A person who has a disease that inhibits the production of cholinesterase would have what kind of symptoms?

a)

prolonged muscle contraction

b)

flacid muscles

c)

inability to speak

d)

paralyzed

42.
Moving a limb away from midline
a)
Pronation
b)
Abduction
c)
Adduction
d)
Flexion
43.
Palm of hand turns from anterior to posterior.
a)
Pronation
b)
Supination
c)
Plantar flexion
d)
Flexion
44.
Moving palm of hand from posterior position to anterior position
a)
Circumduction
b)
Rotation
c)
Supination
d)
Pronation
45.

pointing foot toward the ground

a)

dorsiflexion

b)

plantarflexion

c)

inversion

d)

eversion

46.

The lateral motion TOWARDS the midline is called ______.

a)

adduction

b)

abduction

c)

circumduction

d)

opposition

47.
Identify the joint action being performed.
a)
Circumduction
b)
Lateral Rotation
c)
Medial Rotation
d)
Eversion
48.
Identify the joint action being performed.
a)
Inversion
b)
Eversion
c)
Plantarflexion
d)
Dorsiflexion
49.

Name this movement

a)

adduction

b)

abduction

c)

flexion

d)

extension

50.

Name this movement

a)

extension

b)

flexion

c)

adduction

d)

abduction

51.

Muscles that oppose one another are

a)

synergist

b)

hateful

c)

prime movers

d)

antagonists

52.
The muscle primarily responsible for a movement
is the:
a)
prime mover (agonist).
b)
synergist.
c)
antagonist.
d)
origin.
53.

A muscle that helps another muscle perform a particular function effectively.

a)

Tendon

b)

Prime Mover

c)

Cross-bridge

d)

Synergist

54.

Muscle contributes to homeostasis by 

a)

generating heat to balance the loss of heat from the body surface.

b)

synthesizing vitamin D.

c)

producing blood cells.

d)

storing minerals.

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