CardioRespiratory Quiz

Hypothermia occurs when

• Exposure to cold environments results in excessive heat loss

• Core temperatures begin to rise when more blood flows to the heart and liver

• The body gains more heat than it loses

• Muscles contract rapidly to reduce body temperature

During inspiration, the

• Diaphragm contracts and the intercostal relax

• Intercostals contract and the diaphragm relaxes

• Diaphragm contracts and the intercostals contract

• Intercostals relax and the diaphragm relaxes

As exercise intensity increases the tidal volume

• Decreases inversely

• Increases linearly up to VO2 max

• Increases up to a finite amount reached sub-maximally

• Decreases exponentially

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

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

During gaseous exchange in the lungs

• Oxygen moves from the alveoli into the capillaries and carbon dioxide moves from the capillaries into the alveoli

• Oxygen moves from the capillaries into the alveoli and carbon dioxide moves from the alveoli into the capillaries

• Carbon dioxide moves from the capillaries into the muscles and oxygen moves from the muscles into the capillaries

• Carbon dioxide moves from the capillaries into the arteries and oxygen moves from the veins into the capillaries

Cardiac output is calculated by multiplying

• Heart rate and respiratory rate

• Stroke volume and heart rate

• Systolic blood pressure and heart rate

• Stroke volume and tidal volume

When considering the blood vessels that make up the vascular system, which of the following statements is TRUE

• Vasoconstriction will cause the blood vessels to increase blood flow to body parts

• Arteries will contain higher concentrations of oxygen the veins

• Veins carry blood from the heart to the rest of the body

• Diastolic blood pressure will usually be 40mmHg higher than systolic blood pressure

The arteriovenous oxygen difference (a-VO2 diff)

• Measures the amount of oxygen diffusing into the blood from the lungs

• Increases when venous pooling occurs during recovery

• Is an indirect measure of the difference in the amount of oxygen between veins and arteries

• Decreases as exercise intensity increases

Ventilation is equal to

• Tidal Volume + Residual Volume

• Vital Capacity × Respiratory Rate

• Tidal Volume × Respiratory Rate

• Vital Capacity × Residual Volume

When describing the process of breathing, expiration is considered to be

• Active

• Passive

• Autonomous

• Pulmonary