Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Exercise Physiology > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

Metabolic rate

A

rate of heat production

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Metabolism

A

The sum total of processes occurring in a living organism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What indicates a high metabolic capacity?

A

high capacity to consume and utilize O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Transduction

A

Conversion of chemical energy to other forms of energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Types of cellular work

A

mechanical
synthetic
chemical
osmotic
electrical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Basic unit of heat measurement

A

Calorie (heat required to raise one gram of water one degree)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many calories in a kilocalorie?

A

1000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Indirect calorimetry measures what?

A

Oxygen consumption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a bomb calorimeter?

A

A device when food is ignited and burned in O2 under pressure. Determines the heat of combustion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Respiratory Quotient (RQ)

A

VCO2/VO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why are direct calorimeters not usually used during exercise?

A

Expensive
Heat generated from ergometer may exceed that of the subject
Body temp increases because not all heat is liberated from body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

EPOC

A

“O2 Debt”
Excess post-exercise O2 Consumption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Action potential

A

Brief electrical signal that travels along the membrane of a neuron or muscle fiber initiating a contraction in muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Aerobic capacity

A

The body’s ability to consume and utilize oxygen for energy production

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Anaerobic threshold

A

The exercise intensity at which lactate production exceeds lactate clearance, leading to a rapid increase in blood lactate levels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Basal metabolic rate (bmr)

A

The minimum energy expenditure required to sustain vital bodily functions at rest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Calorimeter

A

The measurement of heat production or energy expenditure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Concentric contraction

A

Muscle shortening during a contraction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Cross-bridge

A

Temporary attachment between myosin and actin filaments during muscle contraction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Eccentric contraction

A

Muscle lengthening during a contraction

21
Q

Energy expenditure

A

Amount of energy used by the body

22
Q

Excitation-contraction coupling

A

The sequence of events linking the electrical excitation of a muscle fiber to its contraction

23
Q

Fiber type

A

The classification of muscle fibers based on their contractile and metabolic properties

24
Q

Golgi tendon organ

A

Sensory receptors in tendons that detect muscle tension

25
Q

Hyperplasia

A

An increase in the number of muscle fibers

26
Q

Hypertrophy

A

An increase in the size of muscle fibers

27
Q

Isometric contraction

A

Muscle contra Aton without a change in muscle length

28
Q

Isotonic contraction

A

Muscle contraction with a change in muscle length under constant tension

29
Q

Motor neuron

A

A nerve cell that transmits signals from the brain or spinal cord to muscle fibers

30
Q

Motor unit

A

A motor neuron and all the muscle fibers it innovates

31
Q

Muscle fiber

A

Single muscle cell

32
Q

Muscle fiber

A

Single muscle cell

33
Q

Muscle plasticity

A

The ability of muscle fibers to adapt their structure and function in response to various stimuli (training, disuse)

34
Q

Myofibril

A

A cylindrical structure within muscle fibers that contains contractile proteins

35
Q

Myofilament

A

The protein filaments within myofibrils, composed primarily of actin and myosin

36
Q

Oxygen consumption ( vo2)

A

Volume of oxygen consumed by the body

37
Q

Excess post exercise oxygen consumption (epoc)

A

Increased rate of oxygen you body consumes after exercise

38
Q

Respiratory exchange ratio

A

Ratio of carbon dioxide produced to oxygen consumed during metabolism, providing an indication of fuel utilization

39
Q

Sarcolemma

A

The plasma membrane of a muscle fiber

40
Q

Sarcomere

A

The basic contractile unit of a muscle fiber

41
Q

Sarcoplasmic reticulum

A

A network of membranes within muscle fibers that stores and releases calcium ions

42
Q

Size principle

A

The principle stating that motor units are recruited in order of increasing size, from smallest to largest

43
Q

Sliding filament theory

A

Explains muscle contraction as a result of the sliding of thin (actin) filaments past thick (myosin) filaments

44
Q

Summation

A

The additive effect of multiple muscle twitches

45
Q

Tetanus

A

A sustained muscle contraction evoked by a high frequency of stimulation

46
Q

Twitch

A

A single, brief contraction of a muscle fiber

47
Q

Ventilatory threshold

A

The paint during exercise at which ventilation increases disproportionately to oxygen consumption

48
Q

VO2 Max

A

. Max volume of oxygen a person can consume during intense exercise, reflecting their aerobic capacity

Exercise Physiology (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions