Human physiology worksheet with answers

Free printable Human physiology worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy

What is tidal volume?

  1. AThe maximum volume of air that can be breathed out after a full breath in
  2. BThe total volume of air in the lungs
  3. CThe volume of air moved in or out in one normal breath
  4. DThe air left in the lungs after a full exhalation
2.Easy

Most homeostatic control systems in the body work by:

  1. ANegative feedback
  2. BPositive feedback
  3. CFeed-forward only
  4. DRandom variation
3.Easy

Which hormone raises blood calcium levels?

  1. ACalcitonin
  2. BParathyroid hormone
  3. CThyroxine
  4. DInsulin
4.Medium

Which hormone increases water reabsorption in the collecting ducts of the kidney?

  1. AParathyroid hormone
  2. BAtrial natriuretic peptide
  3. CAldosterone
  4. DAntidiuretic hormone (ADH)
5.Medium

In which form is most carbon dioxide carried in the blood?

  1. AAs carbonic acid in platelets
  2. BDissolved as CO₂ gas
  3. CAs bicarbonate ions in plasma
  4. DBound to the haem iron
6.Medium

What is the normal pH range of arterial blood?

  1. A7.35 to 7.45
  2. B7.00 to 7.20
  3. C7.50 to 7.65
  4. D6.80 to 7.00
7.Hard

Why does left ventricular failure cause pulmonary oedema?

  1. APlasma oncotic pressure in the lungs rises sharply
  2. BRaised left atrial pressure increases pulmonary capillary hydrostatic pressure
  3. CThe bronchial arteries become blocked
  4. DThe right ventricle pumps less blood into the lungs
8.Hard

At the start of a fever, a patient shivers and feels cold even though body temperature is rising. Why?

  1. APyrogens raise the hypothalamic set point above the current body temperature
  2. BSweating has already cooled the body too much
  3. CThe body has lost its ability to produce heat
  4. DThe thermoreceptors in the skin are destroyed

Answer key

  1. 1. C · The volume of air moved in or out in one normal breath
  2. 2. A · Negative feedback
  3. 3. B · Parathyroid hormone
  4. 4. D · Antidiuretic hormone (ADH)
  5. 5. C · As bicarbonate ions in plasma
  6. 6. A · 7.35 to 7.45
  7. 7. B · Raised left atrial pressure increases pulmonary capillary hydrostatic pressure
  8. 8. A · Pyrogens raise the hypothalamic set point above the current body temperature

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