NEW
Font size
WorksheetsCardiovascular & Respiratory Quiz
Total questions: 10
Worksheet time: 8mins
Identify the valve, name of structure, & oxygenation status of the blood (e.g. oxygenated or deoxygenated).
Tricuspid valve, R/L pulmonary arteries, deoxygenated blood.
Pulmonary semilunar valve, R/L pulmonary arteries, deoxygenated blood.
Pulmonary semilunar valve, R/L pulmonary veins, deoxygenated blood.
Aortic semilunar valve, R/L pulmonary arteries, oxygenated blood.
In order to meet the increased oxygen demands of muscle during exercise, two major adjustments in blood flow must be made:
An increase in cardiac output and redistribution of blood flow from inactive tissues to skeletal muscles.
An increase in blood flow to both the gut and brain.
An increase in muscle blood flow and an increase in blood flow to the liver.
An increase in heart rate and diastolic blood pressure.
In a healthy heart (during rest) the time spent in systole is generally
Longer than diastole.
Equal to diastole.
Shorter than diastole.
Three times longer than diastole.
An increase in parasympathetic outflow to the heart results in
An increase in HR.
A small increase in arterial blood pressure.
A small increases in arterial blood pressure followed by an increase in HR.
A Decrease in HR.
Most of the increase in mean arterial blood pressure that occurs during dynamic (isotonic) incremental exercise is due to
an increase in diastolic blood pressure.
the increase in systolic blood pressure.
both an increase in diastolic and systolic blood pressure.
None of the above are correct.
The term ventilation refers to the
cooling of the airways by respiration.
mechanical process of moving air in and out of the lungs.
oxygenation of blood as it travels through the lungs.
random movement of molecules from an area of high concentration to an area of lower concentration.
Exercise-induced hypoxemia that often occurs in elite endurance athletes during heavy exercise is likely due to
impaired alveolar ventilation resulting in hypoventilation.
chronic obstructive lung disease.
Asthma.
a diffusion limitation secondary to a rapid red blood cell transit time.
The central chemoreceptors that influence the control of breathing respond to changes in the
PCO2 and H+ of cerebral spinal fluid.
H+ of mixed venous blood.
PO2, pH, and PCO2 of arterial blood.
PCO2 and H+ of mixed venous blood.
An increase in blood temperature and a decrease in blood pH would result in _____________ in the oxyhemoglobin dissociation curve.
A leftward shift
No change in
Rightward shift
None of the above answers are
Which of the following statements about myoglobin are true?
myoglobin binds oxygen.
myoglobin shuttles oxygen from the cell membrane to the mitochondria.
myoglobin exists in relatively large quantities in slow-twitch muscle fibers.
All of the above answers are correct.
