Ch 7: Online 3

Question 1

Reversal of charge at the sarcolemma that initiates contraction is….?

Answer 1

Depolarization

Question 2

Most abundant energy source in muscle cells is….?

Answer 2

Glycogen

Question 3

What rushes into a muscle fiber to reverse the charge at the sarcolemma?

Answer 3

Sodium Ions

Question 4

What regulates coordination and the stopping of muscle movements?

Answer 4

Cerebellum

Question 5

Another name for muscle movement away from the midline is….?

Answer 5

Abduction

Question 6

To turn the palm down is called….?

Answer 6

Pronation

Question 7

State of slight contraction in healthy muscles is called….?

Answer 7

Muscle tone

Question 8

Muscles that work in opposition are called….?

Answer 8

Antagonistic

Question 9

Wasting away of a muscle because of disuse

Answer 9

Atrophy

Question 10

Adenosine ____, the direct energy source for muscle contraction

Answer 10

Triphosphate

Question 11

An inhibitory protein in sarcomeres

Answer 11

Triponin

Question 12

Part of the cerebrum that initiates muscle contraction

Answer 12

Frontal lobe

Question 13

Neurotransmitter at neuromuscular junctions

Answer 13

Acetylcholine

Question 14

Muscle sense we are not aware of

Answer 14

Unconscious muscle sense

Question 15

What rushes out of a muscle fiber to restore the original charge at the sarcolemma?

Answer 15

Potassium ions

Question 16

Muscles that work together are called….?

Answer 16

Synergistic

Question 17

Enlargement of a muscle because of greater use

Answer 17

Hypertrophy

Question 18

Stores oxygen within a muscle cell

Answer 18

Myoglobin

Question 19

Another name for muscle sense

Answer 19

Proprioception

Question 20

Waste product of muscle contraction

Answer 20

Creatinine

Question 21

Produced during anaerobic cell respiration, lowers pH

Answer 21

Lactic acid

Question 22

The unit of contraction in a muscle fiber

Answer 22

Sarcomere

Question 23

Movement of a body part toward the midline

Answer 23

Adduction

Question 24

Movement that increases the angle of a joint

Answer 24

Extension

Question 25

Part of the cerebrum that feels conscious muscle sense

Answer 25

Parietal lobe

Question 26

What is depolarization?

Answer 26

Reversal of charge at the sarcolemma that initiates contraction

Question 27

What is significant about glycogen in the muscular system?

Answer 27

Glycogen is the most abundant energy source in muscles

Question 28

What do sodium ions do in muscles?

Answer 28

Sodium ions rush into a muscle fiber to reverse the charge at the sarcolemma

Question 29

What function does the cerebellum serve for muscles?

Answer 29

It regulates coordination and the stopping of muscle movements

Question 30

What is abduction?

Answer 30

Movement of a body part away from the midline

Question 31

What is pronation?

Answer 31

Turning the palm down

Question 32

What is muscle tone?

Answer 32

A state of slight contraction in healthy muscles

Question 33

What are antagonistic muscles?

Answer 33

Muscles that work in opposition

Question 34

What is atrophy?

Answer 34

Wasting away of a muscle because of disuse

Question 35

What is the direct energy source for muscle contraction? Adenosine ______.

Answer 35

Adenosine triphosphate

Question 36

What is triponin?

Answer 36

An inhibitory protein in sarcomeres

Question 37

What function does the frontal lobe serve for muscles?

Answer 37

The frontal lobe is the part of the cerebrum that initiates muscle contraction

Question 38

What is Acetylcholine?

Answer 38

A neurotransmitter at neuromuscular junctions

Question 39

What is unconscious muscle sense?

Answer 39

Muscle senses we are not aware of

Question 40

What do potassium ions do in muscles?

Answer 40

Potassium ions rush out of a muscle fiber to restore the original charge at the sarcolemma

Question 41

What are synergistic muscles?

Answer 41

Muscles that work together

Question 42

What is hypertrophy?

Answer 42

The enlargement of a muscle because of greater use

Question 43

What does myoglobin do?

Answer 43

Stores oxygen within a muscle cell

Question 44

What is proprioception?

Answer 44

Another name for muscle sense

Question 45

What is creatinine?

Answer 45

A waste product of muscle contraction

Question 46

What is lactic acid?

Answer 46

Produced during anaerobic cell respiration, lowers pH

Question 47

What is a sarcomere?

Answer 47

The unit of contraction in a muscle fiber

Question 48

What is adduction?

Answer 48

Movement of a body part towards the midline

Question 49

What is extension?

Answer 49

Movement that increases the angle of a joint

Question 50

What function does the parietal lobe serve for muscles?

Answer 50

The parietal lobe feels conscious muscle sense