Cardiac output, ventilation and exercise Quiz
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5 questions, one answer each
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1. A student has a heart rate of 80 beats per minute and stroke volume of 70 cm³. What is the cardiac output?
- A. 150 cm³ min⁻¹
- B. 560 cm³ min⁻¹
- C. 5600 cm³ min⁻¹
- D. 11 400 cm³ min⁻¹
2. Which nerve carries impulses that decrease the heart rate?
- A. Sympathetic nerve
- B. Vagus nerve
- C. Phrenic nerve
- D. Motor neurone to the diaphragm
3. Which is detected by chemoreceptors during exercise?
- A. A fall in blood glucose
- B. A fall in blood pH
- C. A rise in blood pressure
- D. A fall in temperature
4. Which of these is an effect of adrenaline?
- A. Constriction of the bronchioles
- B. Dilation of arterioles to the gut
- C. Conversion of glycogen to glucose
- D. Decrease in stroke volume
5. Tidal volume is 0.60 dm³ and breathing rate is 15 breaths per minute. What is the minute ventilation?
- A. 9.0 dm³ min⁻¹
- B. 0.04 dm³ min⁻¹
- C. 15.6 dm³ min⁻¹
- D. 90 dm³ min⁻¹