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Ch. 8 Test Study Guide

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.

Which of the following best describes a sarcomere?

a)

A part of the sarcoplasmic reticulum

b)

A group of fascicles

c)

A group of myofibrils

d)

A unit within a myofibril

2.

Myofibrils are composed primarily of ___.

a)

Actin

b)

Myosin

c)

Troponin

d)

Fascia

e)

Perimysium

3.

Which of the following are typically included in a motor unit?

a)

One motor neuron

b)

Several muscle fibers

c)

One muscle fiber

d)

Several motor neurons

4.

Which of the following is true about Endomysium?

a)

Separates individual muscle fibers from each other.

b)

Combines muscle fibers to each other.

c)

Separates individual motor neurons from each other.

d)

Combines motor neurons to each other.

5.

Which structure best matches the definition below?

A broadsheet of dense connective tissue that connects muscle to muscle.

a)

Aponeurosis

b)

Motor neuron

c)

Muscle fiber

d)

Tendon

6.

What is the purpose of Creatine phosphate?

a)

Causes the decomposition of ATP

b)

Causes the decomposition of ADP

c)

Supplies energy for the synthesis of ATP

d)

Supplies energy for the breakdown of ATP to ADP

e)

binds to Ach receptors

7.

Where are Neurotransmitter molecules stored?

a)

Vesicles within myofibrils

b)

Vesicles within motor units

c)

Vesicles within motor end plates

d)

Vesicles within motor neuron endings

e)

Vesicles within sarcomers

8.

Which term best matches the description below?

The amount of oxygen needed to support the conversion of lactic acid to glucose by the liver.

a)

Refractory quantity

b)

Oxygen debt

c)

Anaerobic value

d)

Aerobic conversion

e)

Lactate debt

9.

A temporary lack of __ can cause a muscle cramp.

a)

ATP

b)

ADP

c)

Actin

d)

Myosin

10.

What is released by a motor neuron that crosses the synaptic cleft and reaches the motor end plate by diffusion?

a)

Ach

b)

ATP

c)

ADP

d)

Actin

11.

Which of the following are an example of a partial but sustained contraction of a whole muscle?

a)

Muscle tone

b)

Tetanic contraction of a muscle fiber

c)

A twitch

d)

Fatigue of a motor unit

e)

Eye blink

12.

Which of the following best matches the definition below?

Minimum strength of a stimulus required to cause muscle fiber contraction to occur.

a)

Threshold stimulus

b)

Twitch

c)

Muscle tone

d)

Fatigue of a motor unit

13.

Which of the following is necessary for muscle relaxation?

a)

ATP

b)

ADP

c)

Lactic Acid

d)

Motor unit

14.

During anaerobic respiration, pyruvic acid molecules are converted into molecules of ____.

a)

ATP

b)

ADP

c)

Pyruvic acid

d)

Lactic acid

15.

Which of the following best matches the description below?

The increase in number of motor units activated as a result of more intense stimulation.

a)

Latency

b)

Recruitment

c)

Summation

d)

Threshold stimulation

16.

Activities such as distance swimming and distance running are most likely to stimulate development of __.

a)

slow fatigue muscle fibers

b)

fast fatigue muscle fibers

c)

slow fatigue-resistant muscle fibers

d)

fast fatigue-resistant muscle fibers

17.

The __ __ of stimulation needed to elicit a muscle contraction is called the threshold stimulus.

a)

minimal strength

b)

maximum strength

c)

average strength

18.

The time lag between when a muscle is stimulated and when it begins to contract is called the __ __.

a)

latent period

b)

threshold strength

c)

delayed response

19.

Which term best matches the function below?

Responds to stimulation by neurons and certain hormones.

a)

Multiunit smooth muscle

b)

Single unit smooth muscle

c)

Multiunit Skeletal muscle

d)

Single unit cardiac muscle

20.

The term "muscle" can refer to __.

a)

a cell

b)

a tissue

c)

an organ

d)

a segment

21.

Compared to skeletal muscle, smooth muscle __.

a)

contracts more

slowly and relaxes more slowly

b)

contracts more slowly and relaxes more rapidly

c)

contracts more rapidly and relaxes more rapidly

d)

is under voluntary control

e)

contracts more rapidly and relaxes more slowly

22.

Cardiac muscle is located in the walls of blood vessels.

a)

True

b)

False

23.

Which of the following best matches the description below?

Muscles that assist a prime mover.

a)

Agonist

b)

Antagonist

c)

Synergist

24.

Which of the follow are functions of muscles?

a)

Heartbeat

b)

Muscle tone

c)

Production of heat

d)

Moving of body parts

25.

Which part of the muscle is the moveable end of a muscle that it is attached at?

a)

Origin

b)

Insertion

c)

Fulcrum

d)

Source

26.

Which of the following best matches the description below?

Muscles that are primarily responsible for opposing a particular action.

a)

Agonist

b)

Antagonist

c)

Synergist

27.

Choose the response that best characterizes the concept of recruitment of motor units.

a)

Recruitment of motor units allows us to lift heavy things

b)

Recruitment of motor units allows for short latent periods between muscle contractions

c)

Recruitment of motor units are required for postural stability

d)

Recruitment of motor units helps to generate maximal muscle tension

e)

Recruitment of motor units helps to generate maximal muscle

28.

Muscle fibers rely on anaerobic respiration to obtain energy under which of the following conditions?

a)

When skeletal muscles are used strenuously for a minute or two

b)

When skeletal muscles are resting

c)

Muscle fibers never rely on anaerobic respiration to obtain energy

d)

When skeletal muscles are moving slightly

e)

When skeletal muscles are moderately active

29.

Why is sprinting considered an anaerobic exercise?

a)

Sprinting uses aerobic respiration as blood flow provides sufficient oxygen for cellular requirements.

b)

Sprinting uses anaerobic respiration as oxygen supply is insufficient for cellular requirements.

c)

Sprinting changes the metabolic capacity of a muscle.

d)

Sprinting requires muscle metabolism.

e)

Sprinting uses glycolysis.

30.

During cellular respiration, the maximum theoretical number of ATPs generated per cell is 30 in skeletal muscle.

How many ATP is generated through anaerobic respiration?

a)

28 ATP

b)

2 ATP

c)

26 ATP

d)

30 ATP

31.

Select the following characteristics that the names of the Skeletal Muscles are categorized as.

a)

Action

b)

Size

c)

Direction of its fibers

d)

Color

e)

Shape

32.

Which of the following muscles would be used to express when you are happy?

a)

Trapezius

b)

Sternocleidomastoid

c)

Masseter

d)

Zygomaticus

33.

Which of the following muscles would be used to help you chew your food?

a)

Trapezius

b)

Sternocleidomastoid

c)

Masseter

d)

Zygomaticus

34.

Which of the following muscles would be used to shake your head "no"?

a)

Trapezius

b)

Sternocleidomastoid

c)

Masseter

d)

Zygomaticus

35.

Which of the following muscles would be used to tell a teacher "I don't know" when you shrug your shoulders?

a)

Trapezius

b)

Sternocleidomastoid

c)

Masseter

d)

Zygomaticus

36.

Based on the Chapter 8 notes.

Which muscles would be able to flex your forearm?

a)

Biceps brachii

b)

Brachialis

c)

Brachioradialis

d)

Flexor carpi radialis

e)

Flexor carpi ulnaris

37.

Based on the Chapter 8 notes.

Which muscles would perform hand/wrist extension?

a)

Extensor carpi radialis longus

b)

Extensor digitorum

c)

Extensor carpi ulnaris

d)

Extensor carpi radialis brevis

e)

Extensor ulnar radialis

38.

Based on the Chapter 8 notes.

Which muscles would be a part of the Abdominal wall?

a)

External oblique

b)

Internal oblique

c)

Transverse abdominis

d)

Rectus abdominis

e)

Medial oblique

39.

Based on the Chapter 8 notes.

Which muscles are part of the medial group muscles of the thigh, which is responsible for adducting the thigh?

a)

Adductor magnus

b)

Adductor longus

c)

Adductor brevis

d)

Gracilis

e)

Vastus lateralis

40.

Based on the Chapter 8 notes.

Which muscle would be involved with inversion of the ankle?

a)

Tibialis posterior

b)

Tibialis anterior

c)

Gastrocnemius

d)

Soleus

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