Deck 7 (MC): The Muscular System

Question 1

Tendons are made of ___ tissue,and are attached to the ___ of a muscle.

A)fibrous connective/fascia
B)elastic connective/fascia
C)fibrous connective/periosteum
D)elastic connective/periosteum

Answer 1

A

Question 2

Which statement is NOT true of gross muscle structure?

A)A tendon connects muscle to bone.
B)The more movable bone attachment is the insertion.
C)The fascia of a muscle merges with the ligaments of a bone.
D)The origin is the more stationary bone attachment.

Answer 2

C

Question 3

The more stationary attachment of a muscle to a bone is called the:

A)prime mover
B)antagonist
C)insertion
D)origin

Answer 3

D

Question 4

Which statement is NOT true of organ systems and movement?

A)The bones of the skeletal system are pushed by muscles.
B)The nervous system transmits impulses to cause contraction.
C)The circulatory system delivers oxygen to muscles.
D)The respiratory system gets oxygen into the blood.

Question 5

The organ system that transmits impulses to muscles to cause contraction is the:

A)nervous system
B)circulatory system
C)skeletal system
D)respiratory system

Question 6

Which statement is NOT true of tendons?

A)They connect muscle to bone.
B)They are made of elastic connective tissue.
C)They are very strong.
D)The fibers of a tendon merge with the fascia around a muscle.

Question 7

The organ system that forms a framework that is moved by muscles is the:

A)nervous system
B)circulatory system
C)skeletal system
D)respiratory system

Question 8

The origin of a muscle is its:

A)more stationary attachment
B)junction with the fibers of its tendon
C)more movable attachment
D)junction with its motor nerve

Question 9

The fascia of a muscle is its:

A)fibrous connective tissue sheath
B)protein-contracting fibrils
C)elastic connective tissue sheath
D)protein attachments to bones

Question 10

Which statement is NOT true of synergistic muscles?

A)These include muscles that have the same function.
B)These include muscles that stabilize a joint to make a more precise movement possible.
C)The muscle that does most of the work is called the main muscle.
D)Synergists are needed because a bone may be in several different positions.

Question 11

Muscles with opposite functions are called:

A)synergists
B)antagonists
C)prime movers
D)secondary movers

Question 12

The organ system that transports oxygen to muscles is the:

A)nervous system
B)circulatory system
C)skeletal system
D)respiratory system

Question 13

Muscles with the same function are called:

A)synergists
B)antagonists
C)prime movers
D)secondary movers

Question 14

The more movable attachment of a muscle to a bone is called the:

A)antagonist
B)prime mover
C)origin
D)insertion

Question 15

The structure that connects a muscle to a bone is called a:

A)fascia
B)ligament
C)tendon
D)myofibril

Question 16

Two muscles may be called synergists if:

A)they have the same function
B)they are in the same part of the body
C)they have opposite functions
D)one contracts while the other relaxes

Question 17

Tendons are attached to the ___ of a muscle and the ___ of a bone.

A)fascia/diaphysis
B)fascia/periosteum
C)origin/diaphysis
D)origin/periosteum

Question 18

The organ system that is not directly necessary for the functioning of the muscular system is the:

A)respiratory system
B)nervous system
C)skeletal system
D)digestive system

Question 19

The organ system that exchanges oxygen and carbon dioxide between the air and blood is the:

A)nervous system
B)circulatory system
C)skeletal system
D)respiratory system

Question 20

The insertion of a muscle is its:

A)more stationary attachment
B)junction with the fibers of its tendon
C)more movable attachment
D)junction with its motor nerve

Question 21

With respect to skeletal muscles,proprioceptors are important for:

A)muscle sense
B)muscle tone
C)sustained muscle contractions
D)the most strenuous muscle contractions

Question 22

Which statement is NOT true of muscle tone?

A)It produces body heat.
B)It depends upon nerve impulses.
C)A small number of muscle fibers in a muscle are contracted.
D)It is a state of slight contraction that does not require ATP.

Question 23

An antagonist for a muscle on the dorsal side of the trunk would be found on the:

A)ventral side of the trunk
B)posterior side of the trunk
C)anterior side of the neck
D)lateral side of the neck

Question 24

The part of the brain that initiates muscle contraction is the:

A)cerebrum: frontal lobes
B)cerebellum
C)cerebrum: parietal lobes
D)cerebrum: occipital lobes

Question 25

Muscle tone in a skeletal muscle is:

A)a state of slight contraction that does not depend upon nerve impulses
B)a state of prolonged contraction necessary to do efficient work
C)a state of slight contraction that depends upon nerve impulses
D)a state of relaxation to prepare for contraction

Question 26

The cerebellum of the brain:

A)initiates muscle contraction and regulates muscle tone
B)regulates coordination and conscious muscle sense
C)initiates muscle contraction and regulates coordination
D)regulates muscle tone and unconscious muscle sense

Question 27

An antagonist for a muscle on the posterior side of the thigh would be found on the:

A)anterior side of the thigh
B)medial side of the thigh
C)anterior side of the lower leg
D)posterior side of the lower leg

Question 28

The direct energy source for muscle contraction is:

A)ATP
B)creatine phosphate
C)oxygen
D)glycogen

Question 29

The part of the brain that coordinates voluntary movement is the:

A)cerebrum: frontal lobes
B)cerebellum
C)cerebrum: parietal lobes
D)cerebrum: occipital lobes

Question 30

The state of slight contraction present in healthy muscles is called:

A)muscle sense
B)muscle tone
C)a twitch
D)oxygen debt

Question 31

The part of the brain that uses unconscious muscle sense to promote coordination is the:

A)cerebrum: frontal lobes
B)cerebellum
C)cerebrum: parietal lobes
D)cerebrum: occipital lobes

Question 32

The frontal lobes of the cerebrum:

A)initiate muscle contraction
B)coordinate muscle contraction
C)integrate conscious muscle sense
D)integrate unconscious muscle sense

Question 33

Which statement is NOT true of muscle sense?

A)The receptors are called stretch receptors.
B)The brain creates a mental picture of where the muscles are.
C)We don't have to see our muscles to know where they are.
D)Muscle sense is not necessary for coordination.

Question 34

Which of these is NOT a purpose of good muscle tone?

A)to improve coordination
B)to produce body heat
C)to help maintain posture
D)to perform strenuous exercise

Question 35

The part of the brain that integrates conscious muscle sense is the:

A)cerebrum: frontal lobes
B)cerebellum
C)cerebrum: parietal lobes
D)cerebrum: occipital lobes

Question 36

Which statement is NOT true of the muscles and the brain?

A)The cerebellum promotes coordination.
B)The parietal lobes of the cerebrum integrate conscious muscle sense.
C)Impulses from the brain are needed for voluntary movement.
D)The frontal lobes of the cerebellum initiate muscle contraction.

Question 37

Muscle sense is important for:

A)heat production,especially in cold weather
B)coordination
C)increasing strength in muscles
D)relaxing when strenuous activity is over

Question 38

Knowing where our muscles are without looking at them is called:

A)muscle sense,and involves stretch receptors in muscles
B)coordination,and involves stretch receptors in muscles
C)muscle sense,and involves stretch receptors in the brain
D)coordination,and involves stretch receptors in the brain

Question 39

Which statement is NOT true of antagonistic muscles?

A)They have opposite functions.
B)They push bones in opposite directions.
C)For useful movements,one contracts and the other relaxes.
D)They are on opposite sides of a joint.

Question 40

Muscles must be arranged in antagonistic pairs,because when a muscle contracts:

A)it lengthens and pulls at the same time
B)it can only push a bone in one direction
C)it pulls one way and pushes another
D)it can only pull a bone in one direction

Question 41

Which statement is NOT true of oxygen and muscles?

A)Myoglobin in muscles stores some oxygen.
B)Hemoglobin in RBCs brings oxygen to muscles.
C)Both hemoglobin and myoglobin are lipids that contain iron.
D)Muscle fibers must have oxygen to complete cell respiration.

Question 42

During strenuous exercise,the production of ___ when there is no ___ present in the muscle fibers contributes to muscle fatigue.

A)lactic acid/oxygen
B)oxygen/lactic acid
C)carbon dioxide/glucose
D)lactic acid/carbon dioxide

Question 43

During muscle contraction,oxygen is stored in muscles by:

A)hemoglobin in blood plasma
B)hemoglobin in muscles
C)myoglobin in blood plasma
D)myoglobin in muscles

Question 44

In cell respiration in muscles,the product that is used for muscle contraction is:

A)carbon dioxide
B)ATP
C)heat
D)water

Question 45

The most abundant energy source for muscle contraction is:

A)ATP
B)creatine phosphate
C)oxygen
D)glycogen

Question 46

During muscle contraction,oxygen is brought to muscles by:

A)hemoglobin in blood plasma
B)hemoglobin in RBCs
C)myoglobin in RBCs
D)myoglobin in muscle cells

Question 47

Both hemoglobin and myoglobin are able to bond to oxygen because they contain:

A)copper
B)protein
C)glucose
D)iron

Question 48

In cell respiration in muscles,the product that is a waste product is:

A)carbon dioxide
B)ATP
C)heat
D)water

Question 49

The term oxygen debt means:

A)breathing has stopped and there is no oxygen in the blood
B)muscles lack the oxygen needed to complete cell respiration
C)the liver owes the muscles some oxygen
D)there is too little oxygen in the lungs

Question 50

The function of myoglobin is to:

A)store some oxygen in muscles
B)carry oxygen to muscles in blood plasma
C)carry oxygen to muscles in RBCs
D)store some oxygen in blood plasma

Question 51

When lactic acid accumulates in exercising muscle cells,the result is:

A)contraction debt
B)fatigue
C)tetanus
D)spasm

Question 52

Which statement is NOT true of cell respiration in muscles?

A)ATP is the energy product used for contraction.
B)The water produced must be excreted.
C)Oxygen is required for the complete breakdown of glucose.
D)The carbon dioxide produced will be removed by the circulating blood.

Question 53

In cell respiration in muscles,the product that contributes to body temperature is:

A)carbon dioxide
B)ATP
C)water
D)heat

Question 54

In muscle contraction,the energy source ___ produces the waste product ___,which is excreted by the kidneys.

A)glycogen/carbon dioxide
B)ATP/carbon dioxide
C)glycogen/creatinine
D)creatine phosphate/creatinine

Question 55

The mineral iron is important to muscles because it:

A)enables nerve impulses to reach muscle fibers
B)is part of myoglobin
C)is part of myosin
D)helps stop excessive nerve impulses to prevent fatigue

Question 56

The energy sources for muscle contraction,in the order in which they are used,are:

A)glycogen,ATP,creatine phosphate
B)ATP,creatine phosphate,glycogen
C)creatine phosphate,ATP,glycogen
D)ATP,glycogen,creatine phosphate

Question 57

Which statement is NOT true of the energy sources for muscle contraction?

A)When ATP is used up,muscle fatigue begins.
B)Glycogen is a form of stored energy.
C)Glycogen is made from glucose.
D)Creatine phosphate is a secondary energy source.

Question 58

A contributing factor to fatigue in exercising muscles is:

A)lactic acid
B)oxygen
C)creatine phosphate
D)carbonic acid

Question 59

With respect to muscles,glycogen is:

A)the most abundant energy source
B)stored in muscles
C)both A and B
D)both A and B,and is made of glucose

Question 60

Which statement is NOT true of the energy sources for muscle contraction?

A)The energy from creatine phosphate is used to make more ATP.
B)The ATP stored in muscles lasts only a few seconds.
C)The glycogen stored in muscles lasts only a few seconds.
D)The creatinine produced will be excreted by the kidneys.

Question 61

During depolarization:

A)sodium ions rush into the cell
B)potassium ions rush into the cell
C)sodium ions rush out of the cell
D)potassium ions rush out of the cell

Question 62

In a muscle fiber,myosin and actin are the:

A)contracting proteins
B)inhibiting proteins
C)energy proteins
D)impulse proteins

Question 63

During a state of polarization,___ ions are abundant outside the cell,and ___ ions are abundant inside the cell.

A)potassium/sodium
B)calcium/sodium
C)sodium/potassium
D)sodium/calcium

Question 64

When repolarization takes place,the sarcolemma has a ___ charge outside and a ___ charge inside.

A)negative/positive
B)negative/neutral
C)positive/negative
D)positive/neutral

Question 65

In the neuromuscular junction,the space between the neuron and the muscle fiber is called the:

A)synapse
B)axon terminal
C)sarcolemma
D)sarcomere

Question 66

In the neuromuscular junction,the membrane of the muscle fiber is called the:

A)muscle terminal
B)sarcomere
C)sarcoplasmic reticulum
D)sarcolemma

Question 67

During repolarization:

A)sodium ions rush into the cell
B)potassium ions rush into the cell
C)sodium ions rush out of the cell
D)potassium ions rush out of the cell

Question 68

At the neuromuscular junction,the axon terminal contains:

A)acetylcholine to be stored when an impulse arrives
B)cholinesterase to return the impulse to the neuron
C)acetylcholine to transmit the impulse to the muscle fiber
D)cholinesterase to prevent unwanted continuous contractions

Question 69

The sarcoplasmic reticulum of a muscle fiber contains:

A)sodium ions
B)myosin and actin
C)cholinesterase
D)calcium ions

Question 70

In a muscle fiber,the Z lines are the:

A)end lines of a sarcomere,and actin filaments are attached
B)center lines of a sarcomere,and actin filaments are attached
C)end lines of a sarcomere,and myosin filaments are attached
D)center lines of a sarcomere,and myosin filaments are attached

Question 71

Within a sarcomere,the contracting proteins are:

A)myosin and actin
B)troponin and myosin
C)actin and troponin
D)myoglobin and myosin

Question 72

Depolarization of a muscle fiber is stimulated by:

A)potassium ions
B)calcium ions
C)cholinesterase
D)acetylcholine

Question 73

During depolarization,the sarcolemma has a ___ charge outside and a ___ charge inside.

A)negative/neutral
B)negative/positive
C)positive/neutral
D)positive/negative

Question 74

Which statement is NOT true of sarcomeres?

A)Calcium ions are stored in the sarcolemma.
B)Myosin filaments are in the center.
C)Actin filaments are attached to the Z lines.
D)Sarcomeres are the units of contraction.

Question 75

The units of contraction within a muscle fiber are called:

A)sarcolemmas
B)sarcomeres
C)troponin and myosin
D)sarcoplasmic reticulums

Question 76

In the neuromuscular junction,the end of the motor neuron is called the:

A)synapse
B)axon terminal
C)sarcolemma
D)sarcomere

Question 77

During a state of polarization,the sarcolemma has a ___ charge outside and a ___ charge inside.

A)negative/positive
B)negative/neutral
C)positive/neutral
D)positive/negative

Question 78

At the neuromuscular junction,the sarcolemma contains:

A)acetylcholine to be stored when an impulse arrives
B)cholinesterase to return the impulse to the neuron
C)acetylcholine to transmit the impulse to the muscle fiber
D)cholinesterase to prevent unwanted continuous contractions

Question 79

In a muscle fiber,calcium ions are stored in the:

A)sarcolemma
B)sarcomere
C)myosin filaments
D)sarcoplasmic reticulum

Question 80

Which statement is NOT true of the neuromuscular junction?

A)The axon terminal is the end of the sensory neuron.
B)The neuron and muscle fiber are separated by a synapse.
C)Cholinesterase inactivates acetylcholine.
D)The sarcolemma is the membrane of the muscle fiber.