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Skeletal Muscle and The Nervous System Intro

Total questions: 145

Worksheet time: 4hrs 41mins

Name
Class
Date
1.

T tubules are ________.

a)

Infoldings of the sarcolemma

b)

The plasma membrane of a muscle cell

c)

The cytoplasm of the muscle cell

d)

A modified tubular network that stores calcium in muscle cells

2.

The three steps of contraction of a skeletal muscle are the neuromuscular junction, excitation-contraction coupling, and ________.

a)

Terminal cisternae

b)

Transverse tubules

c)

Actin and myosin

d)

Cross bridge cycling

3.

What rod-like structure contains actin and myosin arranged in a regular pattern that creates dark and light bands.

a)

Myofilament

b)

Myofibril

c)

Sarcolemma

d)

Sarcoplasm

e)

Myoglobin

4.

What myofilament is also known as the thick filament?

a)

Actin

b)

Troponin

c)

Myosin

d)

Tropomyosin

5.

What is the cytoplasm of a muscle cell called?

a)

Synaptic cleft

b)

Endomysium

c)

I bands

d)

Sarcoplasm

e)

Epimysium

6.

Which neuroglia cells forms the myelin sheath for neurons in the brain?

a)

Dendrites

b)

Microglia

c)

Astrocytes

d)

Axons

e)

Oligodendrocytes

7.

Axons that are large in diameter and considered group A in classification are _____.

a)

Areas that also consist of myelinated nerve fibers.

b)

Long distance signal that travels away from the cell body.

c)

Short lived stimuli that decays with distance

8.

What is a graded potential?

a)

Area that consists of myelinated nerve fibers.

b)

Long distance signal that travels away from the cell body.

c)

Short lived stimulus that decays with distance.

9.

The final trigger for smooth muscle contraction is _____?

a)

The rise of intracellular calcium ions.

b)

The rise of extracellular calcium ions.

c)

The rise of intracellular sodium ions.

d)

The rise of extracellular sodium ions.

e)

None of the above.

10.

Where is the origin of the trapezius?

a)

The costal cartilage of rib 1.

b)

The radial tuberosity of the radius

c)

On the base of the occipital bone.

d)

Lateral condyle of the tibia

11.

What muscle is the prime mover for arm flexion at the shoulder?

a)

Pectoralis major

b)

Latissimus dorsi

c)

Rectus femoris

d)

Deltoid

12.

An elaborate network of membranes in skeletal muscles cells that functions in calcium storage is the _____?

a)

mitochondria

b)

intermediate filament network

c)

sarcoplasmic reticulum

d)

T-tubules

13.

Which of the following processes produces the most ATP?

a)

Anaerobic glycolysis

b)

Anaerobic respiration

c)

Aerobic respiration

d)

Lactic acid formation

14.

A muscle that acts to stabilize the movements of other muscles at joints is classified as which of the following?

a)

Antagonist

b)

Prime mover

c)

Synergist

d)

Stabilizer

e)

None of the above

15.

What type of muscle fascicle arrangement is seen when fascicles are arranged in a circle, as in found in body sphincters and around the eyes and mouth?

a)

circular

b)

longitudinal

c)

pennate

d)

parallel

e)

fusiform

16.

Nodes of Ranvier speed up the velocity of conduction along the axon.

a)

True

b)

False

17.

The autonomic division of the nervous system innervates skeletal muscles.

a)

True

b)

False

18.

Which of the following neurotransmitters acts as a hormone in the blood?

a)

Epinephrine

b)

GABA

c)

Endorphins

d)

Serotonin

e)

Dopamine

19.

Which of the following are not associated with the thin filaments?

a)

Actin

b)

Myosin binding site

c)

Troponin

d)

Tropomyosin

e)

Myosin

20.

During depolarization, the sarcolemma is most permeable to ________.

a)
sodium ions
b)

potassium ions

c)

calcium ions

d)

bicarbonate ions

21.

A muscle that immobilizes a bone, or a muscle's origin so that the prime mover has a stable base in which to act is called a ________.

a)
fixator
b)

Synergist

c)

Prime Mover

d)

Agonist

22.

The ________ is(are) the most important muscle(s) for inspiratory breathing.

a)

internal intercostals

b)

diaphragm

c)

scalenes

d)

rectus abdominis

23.

The nervous system has three overlapping functions. Which of the following represents a logical sequence of these three functions from start to finish?

a)

Sensory input, motor output, integration

b)

Motor output, integration, sensory input

c)

Sensory input, integration, motor output

d)

Integration, sensory input, motor output

24.

Which type of potential does not decay with distance?

a)

Graded potential

b)

Action potential

25.

Which of the following synapse types is the most rapid?

a)

Chemical synapse

b)

Electrical synapse

26.

How many cell processes project off a bipolar neuron?

a)

Two cell processes

b)

One cell process

c)

Three or more cell processes

d)

All the above

27.

"A functional junction or point of close contact between two neurons or between a neuron and an effector cell," best describes which of the following terms?

a)

Astrocyte

b)

Blood-brain barrier

c)

Node of Ranvier

d)

Synapse

e)

Junctional folds

28.

Which one of the following is an autoimmune disorder characterized by the destruction of myelin sheaths in the central nervous system (CNS)?

a)

Coma

b)

Multiple sclerosis

c)

Huntington’s disease

d)

Sensorineural deafness

29.

Using the image, which part of the action potential is caused by the the opening voltage-gated sodium (Na+) channels, which allows the neuron membrane to depolarize itself?

a)

1

b)

2

c)

3

d)

4

30.

Is the rectus femoris muscle located on the anterior or posterior side of the thigh?

a)

Anterior

b)

Posterior

31.
The plasma membrane of a skeletal muscle cell is called the:
a)
sarcomere
b)
myofilament
c)
sarcolemma
d)
sarcoplasm
32.
What is the name of the contractile unit in a muscle cell?
a)
fascicle
b)
sarcomere
c)
tendon
d)
endomysium
33.

What are thick filaments known as?

a)

Cross Bridges

b)

Myosin

c)

Light Band

d)

Actin

34.
The Light I Band consists of... 
a)
Myosin filaments only
b)
Actin filaments only
c)
Myosin and actin filaments
d)
none of the above
35.
Fill-in-the-blank! Muscle, Fascicle, _____, Myofibril
a)
Muscle fiber
b)
Myofilament
c)
Sarcomere
d)
Actin 
36.
Actin filaments our bound to the edges of the sarcomere, also known as the...
a)
M-Line
b)
H-Zone
c)
Z-Disc
d)
A-Band
37.

Scientific name for muscle fiber bundle.

a)

Epimysium

b)

Fascicle

c)

Myofibril

d)

Myofilament

38.

Tough connective tissue sheath that surrounds the entire muscle.

a)

Endomysium

b)

Epimysium

c)

Fascicle

d)

Perimysium

39.

Connective tissue sheath that surrounds muscle fibers.

a)

Endomysium

b)

Epimysium

c)

Fascicle

d)

Perimysium

40.

Disappears when the muscle is contracted.

a)

I band

b)

A band

c)

H-zone

d)

M-line

41.

Which label indicates the sarcomere?

a)

H

b)

I

c)

J

d)

K

42.

Click all that apply. Which of these make up a motor unit?

a)

Motor neuron

b)

Muscle fiber

c)

Muscle

d)

Nerve

43.

Which muscle characteristic allows the muscle to return to resting length after contraction?

a)

Contractility

b)

Excitability

c)

Extensibility

d)

Tension

44.

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

a)

Sarcoplasm

b)

Sacolemma

c)

Neuromuscular junction

d)

Axon terminal

45.

What is the name of the neurotransmitter that is released from the neuron to the sarcolemma?

a)

Acetylcholine

b)

Acetone

c)

ATP

d)

Calcium

46.

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

47.

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

48.

Binding sites on actin form cross-bridges with molecules of:

a)

Troponin

b)

ATP

c)

Tropomyosin

d)

Myosin

49.

In order for an active site on actin to be exposed for the cross-bridging binding, the presence of _______ is required

a)

Potassium

b)

Sodium

c)

Calcium

d)

Water

50.

The connective tissue layer that surrounds the fascicle is the:

a)

Perimysium

b)

Epimysium

c)

Endomysium

d)

Sarcomysium

51.
Which of these statements is correct regarding muscle contraction?
a)
All motor units act together
b)
Muscle contraction continues for long periods after nervous stimulation ceases
c)
The crossbridges bind to the actin and shorten the sarcomeres
d)
Troponin is not needed to strengthen the contracting muscle cell.
52.

What are the three types of muscles?

a)

voluntary, smooth, cardiac

b)

cardiac, skeletal, nervous

c)

cardiac, smooth, skeletal

d)

smooth, cardiac, stomach

53.

Which of the following muscle types are voluntary?

a)

Skeletal

b)

Cardiac

c)

Smooth muscle

54.

___are regulatory proteins that cover the myosin binding site on the actin.

a)

troponin-tropomyosin

b)

sarcomere

c)

sarcolemma

d)

sarcoplasmic reticulum

55.

Calcium binds to ___of the troponin-tropomyosin complex.

a)

troponin

b)

tropomyosin

c)

actin

d)

myosin

56.

___gets shorter during contraction.

a)

actin

b)

myosin

c)

troponin-tropomyosin

d)

none of these

57.
What opens the ligand gated sodium/potassium channel?
a)
Calcium Ion Binding to the channel protein.
b)
Acetylcholine binding to the channel protein.
c)
Electrical Signal opening the channel protein.
d)
Acetylcholinesterase binding to the channel protein.
58.
What opens the Calcium Ion Transport Channel embedded in the pre-synaptic terminal?
a)
Binding of Acetylcholine
b)
Binding of Calcium Ion
c)
An Action Potential
d)
Binding of Sodium Ion
59.
Which of the following occurs first in muscle contraction?
a)
Calcium Ion Enters the Pre-synaptic Terminal
b)
Acetylcholine Enters the Synaptic Cleft
c)
Sodium Ion Enters the Sarcolemma
d)
Calcium Ion Enters the Sarcoplasm (Cytoplasm).
60.
A build up of charge in the sarcolemma reaches _____ to begin the propagation of an action potential down the length of the sarcolemma.
a)
Capacity
b)
Threshold
c)
Ionization
d)
Critical
61.
Part of a neuron that receives information from other neurons
a)
axon
b)
dendrites
c)
myelin sheath
d)
synapse
62.
a junction at which a neuron meets another cell
a)
axon
b)
dendrites
c)
myelin sheath
d)
synapse
63.
What number(s) on the graph represents the Resting Potential?
a)
1 and 2
b)
1 and 5
c)
2 and 3
d)
3 and 4
64.
When a neuron is depolarized, what are the first channels to open?
a)
Sodium
b)
Potassium
c)
Calcium
d)
ACTH
65.
When a neuron is resting, the inside of the axon has a ____________ charge.
a)
-55 mV
b)
-70 mV
c)
40 mV
d)
-75 mV
66.
When a neuron is not engaged in an impulse.
a)
Resting potential
b)
Action potential
c)
Neural potential
d)
Synaptic potential
67.
Which ions are involved in the electrical nerve impulse?
a)
Iodine and Sodium
b)
Potassium and Sodium
c)
Iron and Sodium
d)
Calcium and Iodine
68.
What number on the graph represents the Depolarization phase?
a)
1
b)
2
c)
3
d)
4
69.
What number on the graph represents the Hyperpolarization phase?
a)
1
b)
2
c)
3
d)
4
70.
The sodium-potassium pump....
a)
Sends (Na+) into the cell
b)
Sends (K+) into the cell
c)
Exchanges (K+) & (Na+) during depolarization
d)
Exchanges (K+) & (Na+) during hyperpolarization
71.
Why is -55 mV a significant number?
a)
This is the largest charge achieved during an action potential
b)
This is the threshold required to complete an action potential
c)
This is the resting charge of a neuron
d)
This is the charge when all the sodium is inside the cell
72.
Why is hyperpolarization important?
a)
It makes sure the neuron is healthy
b)
It prevents a second, unwanted signal from being sent
c)
It makes sure the neurons are in the correct space
d)
It makes sure the charge is back at -70 mV
73.
When a neuron is resting, the inside of the axon has a ____________ charge.
a)
positive
b)
negative
74.
Neurotransmitters are released from the
a)
Dendrites
b)
Post-synaptic neuron
c)
Presynaptic neuron
d)
Axon
75.
In order for a neuron to have an action potential, the neuron must receive more
a)
excitatory neurotransmitters
b)
inhibitory neurotransmitters
c)
agnostic neurotransmitters
d)
antagonistic neurotransmitters
76.

B

a)

Dendrite

b)

Axon

c)

Axon Terminal

d)

Cell Body

77.
A
a)
Dendrite
b)
Axon
c)
Axon Terminal
d)
Cell Body
78.
Label the Neuron-What does the letter "A" represent?
a)
Axon
b)
Dendrite
c)
Axon Terminal
d)
Cell Body
79.
Label the Neuron-What does the letter "E" represent?
a)
Schwann Cell
b)
Node of Ranvier
c)
Axon Terminal
d)
Myelin Sheath
80.
What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?
a)
Neurotransmitters
b)
Synapse
c)
Threshold
d)
Impulse
81.
-70 mV is the measure of a
a)
Threshold Potential
b)
Action Potential
c)
Resting Potential
d)
End Point Potential
82.

When a membrane potential reaches +30mV, ________ channels open, ________ occurs, and ________ channels close.

a)
Sodium, depolarization, potassium
b)
Potassium, depoloarization, sodium
c)
sodium, repolarization, potassium
d)
postassium, repolarization, sodium
83.
The area between the pre-synaptic cell and the post-synaptic cell is termed the synaptic cleft.
a)
True
b)
False
84.
The sodium-potassium pump is involved in establishing the resting membrane potential. 
a)
True
b)
False
85.
Multiple sclerosis is an autoimmune disease in which the body's own immune system destroys the _____________ of the nerve axons. 
a)
Myelin
b)
Dendrites
c)
Axon Terminal
d)
Nodes of Ranvier
86.
The brain's supporting cells are called: 
a)
glial cells
b)
mitochondria
c)
neurons
d)
nuclei
87.

When is the potassium channel open?

a)

during rest only

b)

during repolarization only

c)

during depolarization only

d)

all the time

88.

Action potentials run along the ______ from ______ to ________.

a)

axon, dendrites, axon terminals

b)

axon, axon terminals, dendrites

c)

dendrites, axon, axon terminals

d)

axon terminals, axon, dendrites

89.

As the neuron fires, there's a reversal in _____ as the axon undergoes ________.

a)

direction, depolarization

b)

charge, depolarization

c)

direction, repolarization

d)

charge, repolarization

90.

Myelin would be which color of structure?

a)

the red one

b)

the blue one

c)

the green one

d)

the purple one

91.
______ send signals away from neurons whereas ______ receive signals from other neurons.  
a)
Axons; Dendrites
b)
Synapses; dendrites
c)
Dendrites; axons
d)
Axons; synapses
92.
The part of the neuron that insulates the axon and increases the speed of the neural message within the neuron.
a)
Synapse
b)
Dendrite
c)
Myelin Sheath
d)
Axon Terminal Button
93.

ATP is required to run

a)

Na/K pumps

b)

leak channels

c)

gated channels

d)

myelin sheaths

94.

What muscle is the arrow pointing to?

a)

Pectoralis (Pecs)

b)

Biceps

c)

Triceps

d)

Lats

95.

What muscle is the arrow pointing to?

a)

Biceps

b)

Triceps

c)

Lats

d)

Quads

96.
a)
Latissmius Dorise
b)
Erectors
c)
Deltoids
d)
Abdominal
97.
a)
Hamstrin
b)
Quadricep
c)
Tibialis Anterior
d)
Gastrocenmius
98.
a)
Latissimius Dorsi
b)
Trapezius
c)
Triceps
d)
Erectors
99.

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

100.

In what part of our muscle structure does the sliding filament theory (muscle contraction) occur in?

a)

fascicles

b)

muscle fibers

c)

sarcomeres

d)

epimysium

101.

How does calcium initiate muscle contraction?

a)

Calcium attaches to actin, allowing cross bridges to form

b)

Calcium causes myosin to attach to the actin protein

c)

Calcium causes ATP to move to myosin heads

d)

Calcium turns the electrical signal into a chemical signal

102.

Cellular Respiration's goal is to

a)

make water

b)

make ATP

c)

make glucose

d)

make oxygen

103.

Anaerobic cellular respiration is termed

a)

glycolysis

b)

Krebs cycle

c)

ETC- electron transport pump

d)

Pyruvate to Acetyl CoA

104.

Insufficient O2 leads to _____ resulting in the need to continue deeply breathing post exercise

a)

Oxygen debt and EPOC

b)

Oxygen debt and muscle fatigue

c)

Muscle fatigue and EPOC

105.

When a muscle lack sufficient ATP due to extended O2 deficiency results in

a)

muscle fatigue

b)

O2 debt

c)

EPOC

106.

How many classifications of levers are there?

a)

3

b)

2

c)

5

d)

4

107.

What part of the human body acts as the fulcrum in all lever systems?

(a)  

108.

In which position will the fulcrum be in relation to the effort and load in a first class lever system?

a)

On the left

b)

In the middle

c)

On the right

109.

What lever type is this?

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

d)

Not a lever

110.

What type of lever is this?

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

d)

Not a lever

111.
The nervous system is composed of the ___, ___, and ___.
a)
heart, brain, kidneys
b)
lungs, liver, stomach
c)
brain, spinal cord, nerves
d)
eyes, pancreas, veins
112.

What is the function of the nervous system?

a)

to control and coordinate body functions and systems.

b)

to protect the body from harm.

c)

to identify pain and begin healing.

d)

to break down food.

113.

The basic unit of structure and function in the nervous system is a nerve cell. Nerve cells are also called-

a)

Osteocytes

b)

Dendrites

c)

Neurons

d)

Spinal Cords

114.
Carries messages away from the cell body of a neuron
a)
nucleus
b)
axon
c)
dendrite
d)
myelin sheath
115.
Carries messages to your brain and spinal cord from receptors in your skin
a)
motor neuron
b)
synapse
c)
axon
d)
sensory neuron
116.
Automatic response to the environment
a)
stimulus
b)
synapse
c)
reflex
d)
voluntary action
117.
Sends messages from your brain and spinal cord to muscle cells
a)
sensory neuron
b)
inter neuron
c)
motor neuron
d)
reflex
118.
Nervous system that consists of a network of nerves branching out from the central nervous system
a)
voluntary
b)
central
c)
peripheral
d)
autonomic
119.
Nervous system that consists of the brain and spinal column
a)
peripheral
b)
voluntary
c)
central
d)
autonomic
120.

Where in the body are Integrating Neurons found?

a)

Muscles

b)

Periphery

c)

Sensory systems

d)

Central Nervous System

121.

Your body detects that you stomach has been stretched after eating a large meal. What type of signal is this?

a)

Visual

b)

Motor

c)

Taste

d)

Sensory

122.
Which neurotransmitter is released in response to stress and trauma?
a)
Acetylcholine
b)
Endorphins
c)
Serotonin
d)
GABA
123.
What is a neurotransmitter?
a)
fatty covering of the axon
b)
nerve cell
c)
chemical messenger
d)
gap between neurons
124.
Which neurotransmitter is involved in muscle movements?
a)
Acetylcholine
b)
Endorphins
c)
Serotonin
d)
GABA
125.

The location of neurotransmitters

a)

axon terminals

b)

dendrites

c)

Schwann cells

d)

cell body

126.

Type of synapse which increases the chance of the next neuron firing

a)

Inhibitory

b)

Excitatory

c)

Neurotransmitters

d)

Neuron

127.

Type of synapse which decreases the chance of the next neuron firing

a)

Inhibitory

b)

Excitatory

c)

Neurotransmitters

d)

Neuron

128.

By what process do vesicles containing neurotransmitter leave the axon terminal?

a)

Exocytosis

b)

Endocytosis

c)

Diffusion

d)

Through gated channels

129.

What is the response in the postsynaptic cell once the acetylcholine has bound to it?

a)

In opens the Na+ gated channels and Na+ rush in

b)

It opens the Ca2+ gated channels and Ca2+ rush in

c)

It closes the K+ channels creating a resting potential

d)

It releases its own neurotransmitter into the synaptic cleft

130.

Neurons that carry information from the sensory receptors to the CNS:

a)

Sensory, afferent

b)

Sensory, efferent

c)

Moror, afferent

d)

Motor, efferent

131.

Rare in adults, these neurons are only found in sense organs like the eye and nose:

a)

unipolar

b)

bipolar

c)

multipolar

132.

This type of neuron is usually found in your sensory receptors.

a)

Unipolar

b)

Bipolar

c)

Multipolar

133.

Motor neurons are also called ____________ neurons and they are usually __________.

a)

efferent, bipolar

b)

efferent, multipolar

c)

afferent, unipolar

d)

afferent, multipolar

134.

Sensory neurons are also called ____________ neurons and they are usually __________.

a)

efferent, unipolar

b)

afferent, multipolar

c)

efferent, bipolar

d)

afferent, unipolar

135.

Interneurons are also called ____________ neurons and they are usually __________.

a)

association, unipolar

b)

association, bipolar

c)

association, multipolar

136.

Which neuroglial cell is not found in the CNS?

a)

microglia

b)

schwann cells

c)

oligodendrocytes

d)

ependymal cells

e)

Astrocytes

137.

Which of the neuroglial cells is important in protecting the CNS from infection?

a)

astrocytes

b)

microglia

c)

ependymal cells

d)

oligodendrocytes

e)

Schwann cells

138.

Neuron with one axon and many dendrites is

a)

Multipolar

b)

Bipolar

c)

Unipolar

139.

CNS axons can regenerate

a)

true

b)

false

140.

Which controls cardiac muscle, smooth muscle and glands?

a)

Somatic nervous system

b)

autonomic nervous system

141.

Which is under voluntary control?

a)

Somatic nervous system

b)

autonomic nervous system

142.

Which group controls the skeletal muscles?

a)

Somatic nervous system

b)

autonomic nervous system

143.

The sympathetic and parasympathetic divisions are two arms of the ________.

a)

central nervous system

b)

voluntary nervous system

c)

autonomic nervous system

d)

somatic nervous system

e)

peripheral nerous system

144.

What cells form the myelin sheaths around nerve fibers in the PNS?

a)

satellite cells

b)

ependymal cells

c)

Schwann cells

d)

microglial cells

145.

Which ciliated neuroglial cell circulates cerebrospinal fluid?

a)

oligodendrocytes

b)

Schwann cells

c)

microglia

d)

ependymal cells

e)

astrocytes