Quiz about Muscles Quiz

Question 1

What is the blanket of the muscles, a continuous layer of CT throughout the body?

Accepted Answer

fascia

Answer

ligaments

Answer

connective tissue

Question 2

What are the three layers of fascia?

Accepted Answer

Epimysium, perimysium, endomysium

Answer

Endomysium, perimysium, epimysium

Answer

Perimysium, endomysium, myofibrils

Question 3

Which layer of fascia wraps around the whole muscle?

Accepted Answer

Epimysium

Answer

Perimysium

Answer

Endomysium

Question 4

Which layer of fascia wraps around the fascicles (middle layer)?

Accepted Answer

Perimysium

Answer

Epimysium

Answer

Endomysium

Question 5

Which inner layer of fascia wraps around muscle fibers (cells)?

Accepted Answer

Endomysium

Answer

Epimysium

Answer

Perimysium

Question 6

What are the 3 principal functions of the muscular system?

Accepted Answer

Facilitate movement, posture maintenance, heat production

Answer

Movement, respiration, protection

Answer

Contraction, relaxation, expansion

Question 7

Bundles of muscle fibers make up the:

Accepted Answer

fascicles

Answer

ligaments

Answer

cells

Question 8

Which type of muscle fibers fatigue more easily and contain less myoglobin?

Accepted Answer

Type II

Answer

Type I

Answer

Type III

Question 9

What are properties of the muscles?

Accepted Answer

entensibility

Answer

elasticity

Answer

irritability

Answer

contractibility

Question 10

What are the 3 parts of the Neuromuscular junction (NMJ)?

Accepted Answer

motor neuron, synaptic gap, motor endplate

Answer

actin, myosin

Answer

epismysium, perimysium, endomysium

Question 11

Which is true about the motor neuron?

Accepted Answer

All are true

Answer

nerve that connects (innervates) with a muscle to produce a contraction/movement

Answer

efferent (away) neurons (move away from the brain and spinal cord)

Question 12

Which best describes the synaptic gap?

Accepted Answer

NMJ; where two structures meet at a gap (motor neuron and muscle meet)

Answer

nerve that connects (innervates) with a muscle to produce a contraction/movement

Answer

a structure on the sarcolemma (cell membrane) that is capable of excitation

Question 13

Which best describes the motor endplate?

Accepted Answer

a structure on the sarcolemma (cell membrane) that is capable of excitation

Answer

where two structures meet at a gap (motor neuron and muscle meet)

Answer

nerve that connects (innervates) with a muscle to produce a contraction/movement

Question 14

Which best describes a motor unit?

Accepted Answer

motor neuron and all the muscle fibers (cells) that it innervates

Answer

nerve that connects (innervates) with a muscle to produce a contraction/movement

Answer

a structure on the sarcolemma (cell membrane) that is capable of excitation

Question 15

Which best explains the All-or-None Response?

Accepted Answer

The muscle contracts to its fullest or not at all

Answer

The muscle contracts partially

Answer

The muscle contracts only when needed

Question 16

Which is the principal neurotransmitter is involved in muscle contraction; chemical messenger?

Accepted Answer

Acetylcholine (ACH)

Answer

Serotonin

Answer

Dopamine

Question 17

What are bundles of muscle fibers?

Accepted Answer

fascicles

Answer

myofibrils

Answer

myofilament

Question 18

What is the muscle cell; bundles of myofibirils that contain sarcomes?

Accepted Answer

muscle fibers

Answer

myofibrils

Answer

fascicles

Question 19

What do you call bundles of myofilaments (proteins)?

Accepted Answer

myofibrils

Answer

muscle fibers

Answer

fascicles

Question 20

Proteins are also known as

Accepted Answer

myofilament

Answer

myofibrils

Answer

fascicles

Question 21

Which 2 are true about myosin and actin?

Accepted Answer

They are proteins (myofilaments).

Accepted Answer

Myosin is thick, actin is thin

Answer

Myosin is thin, actin is thick

Question 22

What layers merge to create the tendons?

Accepted Answer

All the above

Answer

epimysium

Answer

perimysium

Answer

endomysium

Question 23

Which are types of muscles?

Accepted Answer

All the above

Answer

skeletal

Answer

smooth which is found in hollow organs

Answer

cardiac

Question 24

In order for a muscle to contract, what does it need?

Accepted Answer

the sarcomere (basic unit of contraction), space btwn z lines

Answer

sarcolemma

Answer

sarcoplasmic reticulum

Question 25

What is a true statement about sarcomere proteins?

Accepted Answer

when myocin and actin interact they pull, contract

Answer

actin (thin)

Answer

myocin (thick)

Answer

All the above

Question 26

Muscles don't push they only pull.

Accepted Answer

True

Answer

False

Question 27

What is the "gateway" into and out of the muscle cell called?

Accepted Answer

Sarcolemma

Answer

Sarcoplasmic reticulum

Answer

Sarcomere

Question 28

Which is the transportation highway that stores and releases calcium?

Accepted Answer

Sarcoplasmic reticulum

Answer

sarcolemma

Answer

Sarcomere

Question 29

Which is an extension of the cell membrane that carries the chemical messenger ACH into the sarcoplasmic reticulum?

Accepted Answer

Transverse tubules

Answer

Sarcolemma

Answer

Sarcomere

Question 30

What is the main source of energy for muscle cells needed for contraction?

Accepted Answer

Adenosine triphosphate (ATP)

Answer

Glucose

Answer

Calcium

Question 31

Aerobic respiration is with oxygen and anerobic respiration is without oxygen.

Accepted Answer

True

Answer

False

Question 32

Which are areas where postural muscles are found?

Accepted Answer

deep core muscles (deep abdominals, back muscles), pelvic (hip) muscles

Answer

legs, arms, and shoulders

Answer

skull, neck, and face

Question 33

Which are areas where phasic muscles are found?

Accepted Answer

legs, arms, and shoulders

Answer

deep core muscles (deep abdominals, back muscles), pelvic (hip) muscles

Answer

skull, neck, and face

Question 34

What is the principal function of postural muscles?

Accepted Answer

Keeping an upright posture

Answer

Producing movement

Answer

Generating heat

Question 35

What are the 2 myofilaments involved in muscle contraction?

Accepted Answer

myosin

Accepted Answer

actin

Answer

glucose

Question 36

What is needed to produce ATP?

Accepted Answer

myosin and actin

Answer

oxygen

Answer

glucose

Question 37

What are the 2 types of muscle contraction?

Accepted Answer

isometric, isotonic

Answer

aerobic, anerobic

Answer

actin, myosin

Question 38

Which type of isotonic contraction elongates, increases the distance between joints?

Accepted Answer

eccentric

Answer

conniving

Answer

concentric

Question 39

Which type of isotonic contraction shortens decreases the distance between joints?

Accepted Answer

concentric

Answer

conniving

Answer

eccentric

Question 40

Muscle insertion is which of the following?

Accepted Answer

All the above

Answer

less stable

Answer

more distal, lateral

Answer

movable

Question 41

Muscle origin is which of the following?

Accepted Answer

All the above

Answer

more stable

Answer

proximal

Answer

medial

Question 42

What reverses roles in functional reversibility?

Accepted Answer

Muscle insertion and origin

Answer

Motor neuron and muscle fiber

Answer

Myosin and actin

Question 43

What is the process where insertion and origin reverse roles in a muscle?

Accepted Answer

Functional reversibility

Answer

Muscle contraction

Answer

Motor unit activation

Question 44

What are the major shapes of the muscles?

Accepted Answer

Parallel and pennate

Answer

circular and square

Answer

triangular and diamond

Question 45

Which structure withing the muscle makes ATP

Accepted Answer

mitochondria

Answer

motor neurons

Answer

sarcoplastic reticulum

Question 46

Why is calcium important in muscular contraction?

Accepted Answer

All the above

Answer

calcium ions bind to tropomyosin

Answer

responsible for exposing the binding site of actin

Question 47

Which structure within the muscle cell stores and releases calcium?

Accepted Answer

sarcoplasmic reticulum

Answer

sarcolemma

Answer

sarcomere

Question 48

Which type of muscle fibers are fatigue-resistant and rich in myoglobin?

Accepted Answer

Type I

Answer

Type II

Answer

Type III

Question 49

Which type of muscle fibers are easily fatigued, contain less myoglobin, and fast twitch?

Accepted Answer

Type II

Answer

Type I

Answer

Type III

Question 50

Which type of muscle fibers are found in the leg, arms and shoulders and are white muscles?

Accepted Answer

Type II

Answer

Type I

Answer

Type III

Question 51

Which type of muscle fibers are found in the red muscles (back, abdominal, pelvic)?

Accepted Answer

Type I

Answer

Type II

Answer

Type III

Question 52

Which type of muscle fibers are found in the legs, arms, and shoulders?

Accepted Answer

Phasic muscles

Answer

Postural muscles

Answer

Isotonic muscles

Question 53

What are examples of involuntary muscles?

Accepted Answer

Cardiac

Answer

Feet

Answer

Legs

Question 54

What is the main function of phasic muscles?

Accepted Answer

Producing higher proportion of movement

Answer

Heat production

Answer

Maintaining posture

Question 55

What is the role of myosin in muscle contraction?

Accepted Answer

Interacts with actin to generate movement

Answer

Binds to actin

Answer

Stores calcium ions

Question 56

What attaches muscle to bone?

Accepted Answer

Tendons

Answer

Ligaments

Answer

Cartilage

Question 57

Which is part of the 4 subcalssifications of parallel muscles?

Accepted Answer

All the above

Answer

Circular

Answer

Fusiform

Answer

Triangular

Question 58

Which is part of the 3 subcalssifications of pennate muscles?

Accepted Answer

All the above

Answer

Unipennate

Answer

Bipennate

Answer

Multipennate

Question 59

What is the role of calcium ions in muscle contraction?

Accepted Answer

Bind to tropomyosin and expose actin binding sites

Answer

Stimulate the motor neuron

Answer

Store energy in the muscle cell

Question 60

Which is true about triangular muscles?

Accepted Answer

All the above

Answer

A parallel muscle shape that is convergent

Answer

Pectoralis Major is an example

Answer

Wider origins and fibers converge at a single point

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