Basic Sports Science

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Basic Sports Science - Quiz 2

Physiology Part A - The Cardiorespiratory System and Exercise

Which of the following represents a "chronic adaption" to exercise?

1 point

An increased heart rate after a jog

A stronger left ventricle

An increase in perspiration

All of the above

Clear selection

Which of the following are components of the cardiorespiratory system?

1 point

cardiovascular system

respiratory system

All of the above

Clear selection

Which of the following are components of the cardiovascular system?

1 point

Blood, blood vessels and heart

Lungs

Airways

Clear selection

The main function of ventilation is

1 point

Transfer oxygen into the blood

Remove carbon dioxide from the blood

All of the above

Clear selection

Which of the following describes the path of air into the lungs?

1 point

Throat, trachea, bronchi, alveoli, bronchiolies

Throat, bronchi, bronchiolies, alveolies, trachea

Throat, trachea, bronchi, bronchiolies, alveoli

Clear selection

Which of the following are associated with the alveoli?

1 point

They are the main site of gas exchange

Gas is exchanged to capillaries

They are found in the lungs

All of the above

Clear selection

Breathing occurs as a result of

1 point

The muscles of the lungs contracting and expanding

The muscles of the diaphragm contracting to breathe in and relaxing to breathe out

The muscles of the aveloli pushing more gas into the capillaries

All of the above

Clear selection

When the diaphram contracts

1 point

the pressure of the thoracic space around the lungs reduces

The diaphragm becomes shorter

The volume of the space around the lungs becomes larger

All of the above

Clear selection

The "thoracic volume" is

1 point

The volume of air in the lungs

The volume of the cavity around the lungs

The size of the alveoli

The volume of air taken in with each breath

Clear selection

Which of the following will occur during exercise?

1 point

The depth of breathing will increase

The frequency of breathing will increase

The diffusion of gases across the alveoli will increase

All of the above

Clear selection

At high levels of exercise, increased ventilation is primarily due to

1 point

an increased breathing rate

an increased tidal volume (depth of breathing)

both an increase in breathing rate and tidal volume

Clear selection

At moderate levels of exercise, increased ventilation is primarily due to

1 point

an increased breathing rate

an increased tidal volume (depth of breathing)

both an increase in breathing rate and tidal volume

Clear selection

Which is of the following is not true with regards to the ventilation of a well trained athlete during exercise?

1 point

A well trained athlete must breathe at a higher rate than a poorly trained athlete

A well trained athlete is able to maintain a higher depth of breathing than a poorly trained athlete

A well trained athlete will have a lower breathing rate than a poorly trained athlete

Clear selection

The "vital capacity" is

1 point

Maximum amount of of air a person can expel from the lungs after a maximum inhalation

The maximum amount of blood in the body

The maximum amount of oxygen in the blood

Clear selection

The tidal volume plateaus at about _____ of the vital capacity

1 point

Clear selection

The normal breathing rate at rest in a thermo-neutral environment is approximately

1 point

12 breaths per minute

20 breaths per minute

50 breaths per minute

Clear selection

Which describes the function of the functions of the right side of the heart?

1 point

Receive de-oxygenated blood from the body and pump the blood to the lungs

Receive oxygenated blood from the lungs and pump the blood to the body

Receive oxygenated blood from the body and pump the blood to the lungs

Clear selection

Which describes the function of the functions of the left side of the heart?

1 point

Receive de-oxygenated blood from the body and pump the blood to the lungs

Receive oxygenated blood from the lungs and pump the blood to the body

Receive oxygenated blood from the body and pump the blood to the lungs

Clear selection

Which chamber of the heart pumps oxygenated blood to the body?

1 point

Right ventricle

Left ventricle

Right atrium

Left atrium

Clear selection

The muscular walls of the left ventricle are larger than the right because this vessel

1 point

pumps de-oxygenated blood to the lungs

pumps oxygenated blood to the whole of the body

receives oxygenated blood from the lungs

receives de-oxygenated blood from the body

Clear selection

Which of the following transports O2 and CO2 around the body

1 point

Red blood cells

White blood cells

Both red and white blood cells

Platelets

Clear selection

Which of the following are responsible for the body's immunity?

1 point

Red blood cells

White blood cells

Platelets

Clear selection

The role of platelets is to

1 point

Enable clotting of the blood

Transport oxygen

Clear selection

Arteries

1 point

carry blood away from the heart

carry blood to the heart

Clear selection

Veins

1 point

carry blood away from the heart

carry blood to the heart

Clear selection

Except for arteries to the lungs, all arteries carry

1 point

oxygenated blood

deoxygenated blood

Clear selection

Except for veins from the lungs, all veins carry

1 point

oxygenated blood

deoxygenated blood

Clear selection

Which transport blood at the highest pressure?

1 point

Arteries

Veins

Clear selection

Which have the thickest walls?

1 point

Arteries

Veins

Clear selection

The pulse read at the neck is called the

1 point

Carotid pulse

Radial pulse

Clear selection

The pulse read at the wrist is called the

1 point

Carotid pulse

Radial pulse

Clear selection

The smallest blood vessels are called

1 point

Ateries

Arterioles

Veins

Capillaries

Clear selection

Gas and nutrient transfer between the blood and tissues occurs at the

1 point

Ateries

Arterioles

Veins

Capillaries

Clear selection

The largest blood vessels are the

1 point

Ateries

Arterioles

Veins

Capillaries

Clear selection

Which of the following assist in transporting blood in the veins

1 point

Non-return valves

Action of the muscles on the veins

All of the above

Clear selection

Heart rate increases with the intensity of the exercise

1 point

True

False

Clear selection

Tachycardardia is...

1 point

A higher than normal heart rate

A lower than normal heart rate

Clear selection

Bradycardia is..

1 point

A higher than normal heart rate

A lower than normal heart rate

Clear selection

An efficient heart is characterized by

1 point

A lower plateau in stroke volume

A higher plateau in stroke volume

Clear selection

The stroke volume is the volume of blood pumped out

1 point

to the body by the right ventricle

to the lungs by the left ventricle

to the body by the left ventricle

Clear selection

The cardiac output (Q) is

1 point

the rate of blood flow from the left ventricle (in litres per minute)

stroke volume (SV) x heart rate (HR)

All of the above

Clear selection

A trained athlete is able to achieve a higher cardiac output (Q) than an untrained athlete

1 point

True

False

Clear selection

Cardiac out (Q) = Stroke Volume (SV) x Heart rate (HR)

1 point

True

False

Clear selection

At higher levels of exercise, higher levels of cardiac output (Q) are due to

1 point

an increased stroke volume

an increased heart rate

Clear selection

The a-VO2 diff is difference between the concentration of oxygen in the

1 point

lungs and the lung capillaries

arteries and the veins

air and the lungs

Clear selection

A trained athlete can maintain a _______ a-VO2 diff as compared to an untrained athlete

1 point

Higher

Lower

Clear selection

The Fick Equation -

1 point

Represents the relationship between oxygen consumption by the body (VO2) and the cardiac output (CO)

Is given by VO2=Qxa-VO2 diff

is given by VO2=SV x HR x a-VO2 diff

All of the above

Clear selection

The concentration of oxygen in arterial blood was found to be 20 ml/100ml and the concentration in the venous blood was 12ml/100ml. What is the a-VO2 diff?

1 point

20 ml/100ml

12 ml/100ml

20 ml/100ml - 12 ml/100ml = 8 ml/100 ml

Clear selection

An athlete had a HR of 100bpm and a SV of 70ml. His cardiac output (Q) was

1 point

=100 bpm x 70ml = 700 ml/minute

70 ml/minute

100 ml/minute

Clear selection

An athlete had a HR of 100bpm, SV of 70ml and a a-VO2 diff of 10ml/100ml. His VO2 was

1 point

100 x 70 x 10/100 =700 ml/minute = 0.7 l/minute

70 ml/minute

100 bpm

Clear selection

During vigorous exercise, blood supply is re-directed

1 point

away from the organs

to the skin for thermoregulation

to the muscles

All of the above

Clear selection

Which of the following is not a chronic adaption to exercise?

1 point

A stronger left ventricle

Increased stroke volume

Reduced movement of blood through the capillaries

Increased blood volume

Clear selection

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