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Muscular System Quiz

Total questions: 60

Worksheet time: 35mins

Name
Class
Date
1.
Muscle end attached to movable bone
a)
origin
b)
insertion
2.
Calcium must be present for muscle contraction to happen.
a)
true
b)
false
3.
Thick filaments in the sarcomere that stay in place & have moving heads that attach to thin filaments 
a)
actin
b)
myosin
4.
Thin filaments that move and cause muscle contraction
a)
actin
b)
myosin
5.
The smallest functional unit of a muscle
a)
fiber
b)
fascicle
c)
myo
d)
sarcomere
6.
Bone is attached to bone by 
a)
tendons
b)
ligaments
7.
Which of these is NOT related to the sliding filament model?
a)
troponin
b)
calcium
c)
lithium
d)
tropomyosin
8.
#1
a)
actin
b)
myosin
c)
sarcomere
d)
Z-band
9.
#4
a)
actin
b)
myosin
c)
sarcomere
d)
Z-band
10.
#3
a)
actin
b)
myosin
c)
sarcomere
d)
Z-band
11.
#5
a)
actin
b)
myosin
c)
sarcomere
d)
Z-band
12.

What letter is the I band

a)

A

b)

B

c)

C

d)

NONE

13.

The thin filaments are depicted by what letter?

a)

D

b)

B

c)

C

d)

None of the above

14.

What is the name of the layer letter A is pointing to ?

a)

Perimysium

b)

Epimysium

c)

Endomysium

d)

None

15.

The endomysium that wraps individual muscle fibers is indicated by ________.

a)

A

b)

B

c)

C

d)

D

16.

One neuron and all the skeletal muscles it stimulates is known as a ________.

a)

sarcoplasmic reticulum

b)

motor unit

c)

synaptic cleft

d)

Nada

17.

The gap between the motor neuron and the muscle fiber it supplies at the neuromuscular junction is called the ________.

a)

The gap

b)

Sypnatic Cleft

c)

T Tubules

d)

nada

18.

Striated involuntary muscle tissue found in the heart is ________.

a)

Cardiac

b)

Smooth

c)

Skeletal

d)

Nada

19.

Smooth muscle cells are ________.

a)

Involuntary

b)

Straited

c)

Branched

d)

none

20.

Why are calcium ions necessary for skeletal muscle contraction?

a)

None

b)

calcium increases the action potential transmitted along the sarcolemma

c)

calcium causes ATP binding to actin

d)

calcium triggers the binding of myosin to actin

21.

Acetylcholine is ________.

a)

a source of energy for muscle contraction

b)

an ion pump on the postsynaptic membrane

c)

a neurotransmitter that stimulates skeletal muscle

d)

Nada

22.

Structure that calcium is stored and released is called ________.

a)

Sarcomere

b)

Sarcoplasmsic Reticulum

c)

T Tubules

d)

None

23.

In order to excite a muscle cell, acetycholine must ________.

a)

enter the muscle cell by endocytosis

b)

travel into the axon terminal of the nerve cell by endocytosis

c)

enter the muscle cell through protein channels

d)

bind to receptors in the sarcolemma of the muscle cell

24.

#6 is what muscle

a)

Biceps

b)

Triceps

c)

Deltoid

d)

None

25.

#10 is pointing to what msucles

a)

Rhomboid Major

b)

Teres Minor

c)

Latissimus Dorsi

d)

None

26.

#9 is referring to what structure

a)

Biceps

b)

Triceps

c)

Deltoid

d)

None

27.

#25 belong to what muscle group

a)

Hamstirng

b)

Quadriceps

c)

Extensors

d)

None

28.

#5 is pointing to what number?

a)

Vastus Medialis

b)

Vastus Lateralis

c)

Vastus Obqlique

d)

None

29.

#14 Is referring to what muscles?

a)

Vastus Intermedius

b)

Biceps Femoris

c)

Rectus Femoris

d)

Vastus Medialis

30.

#24 Is pointing to what muscles

a)

Calf

b)

Gastrocnemius

c)

Gastrensor

d)

None

31.

The biceps femoris is located on what bone?

a)

Tibi

b)

Fibula

c)

Tibia

d)

Femur

32.

#1 is referring to what muscle

a)

Deltoid

b)

Pectoralis

c)

Biceps

d)

Triceps

33.

Myofibrils are made of Actin which is

a)

thin filaments

b)

thick filaments

34.
The part of the sarcomere that A (green) refers to is the?
a)
Z Line
b)
M Line
c)
H Line
d)
A Line
35.
A sarcomere is
a)
A protein filament or fiber
b)
The basic contractile unit of muscle contraction
c)
An organelle
d)
An organ
36.
Name the tissue:
a)
Skeletal
b)
Cardiac
c)
Smooth
37.
Name the tissue:
a)
Skeletal
b)
Cardiac
c)
Smooth
38.
Name the tissue:
a)
Skeletal
b)
Cardiac
c)
Smooth
39.
The plasma membrane of a skeletal muscle cell is called the:
a)
sarcomere
b)
Sarcoplasmic reticulum
c)
Sarcolemma
d)
Myofibril
40.
What is the epimysium?
a)
Connective tissue that surrounds the entire skeletal muscle.
b)
Connective tissue surrounding a fascicle.
c)
Connective tissue surrounding a muscle fiber
d)
Tissue that connects muscle to bone.
41.

What is the endomysium?

a)

Tissue that connects muscle to bone.

b)

Connective tissue that surrounds the entire skeletal muscle.

c)

Connective tissue that surrounds the entire muscle cell

d)

Connective tissue surrounding a fasicle

42.
What is the perimysium?
a)
Connective tissue surrounding a muscle fiber
b)
Connective tissue surrounding a fascicle.
c)
Connective tissue that surrounds the entire muscle cell
d)
Tissue that connects muscle to bone.
43.
Which of the following is NOT a function of the muscular system:
a)
hematopoiesis
b)
stabilization of joints
c)
Production of heat
d)
Maintenance of posture
44.
What is a sarcomere?
a)
Non functional unit of a muscle
b)
A bundle of muscle fibers
c)
the area between two intercalated discs.
d)
The contractile unit of a muscle.
45.
Anaerobic means:
a)
With oxygen
b)
Without oxygen
c)
Without ATP
d)
None of the above
46.
Which of these muscles is NOT located in the head:
a)
Temporalis
b)
buccinator
c)
Sartorius
d)
frontalis
47.
Which one of the following is the action of the orbicularis oris?
a)
draws the eyebrows together
b)
pulls the lower lip down and back
c)
Closes the eye
d)
closes, purses, and protrudes the lips
48.
What is the sarcoplasmic reticulum?
a)
A neurotransmitter that stimulates muscle contraction
b)
Specialized ER that wraps around each myofibril, stores and releases calcium ions
c)
The cytoplasm of a muscle cell
d)
Contractile unit of a muscle
49.
Skeletal Muscle contraction is initiated when the ________ sends a message to the muscle cell.  
a)
Muscle cell
b)
Neuron
c)
Gland
d)
None of the above
50.
What is the structure that stores the Calcium in the muscle cell.  
a)
Sarcoplasm
b)
Sarcolemma
c)
Sarcoplasmic Reticulum
d)
Myoglobin
51.
What is the name of the contractile unit in a muscle cell?
a)
fascicle
b)
sarcomere
c)
tendon
d)
endomysium
52.
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
53.
When a muscle fiber contracts, the I bands diminish in size.
a)
True
b)
False
54.
enzyme that breaks down the muscle cell neurotransmitter and ends the impulse
a)
lactase
b)
sucrase
c)
lipase
d)
acetylcholinterase
55.
Region where a motor neuron comes in close contact with a muscle cell.
a)
neurotransmitter
b)
muscular dystrophy
c)
muscle tension
d)
neuromuscular junction
56.
What protein is wrapped around actin that prevents it from contacting myosin
a)
Troponin
b)
Tropomyosin
c)
Calcium
d)
None of the above
57.
Which of these options best summarizes the FIRST phase of a muscle contraction?
a)
A stimulus from the neuron reaches the muscle fiber and stimulates an action potential in the muscle.
b)
The action potential travels along the sarcolemma and penetrates into the muscle fiber. Calcium is released by the SR and travels to the sarcomere.
c)
The cross bridge cycle occurs after calcium is released by the SR. During this cycle, the actin myofilaments are pulled towards the M line by the myosin myofilaments.
58.
During the first phase of contraction, what leaves the neuron and binds to the muscle fiber?
a)
A neurotransmitter called Acetylcholine (ACh)
b)
Calcium ions
c)
Sodium ions
d)
An action potential
59.
What ions are released from the Sarcoplasmic Reticulum during the second phase of a muscle contraction?
a)
Calcium
b)
Potassium
c)
Sodium
d)
Phophorus
60.
What two chemicals are necessary for muscle contraction to occur?
a)
Niacin and Potassium
b)
Calcium and ATP
c)
Sodium and Potassium
d)
Ach and Potassium

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