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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1.Easy

What is the normal resting heart rate range for a healthy adult?

  1. A60 to 100 beats per minute
  2. B40 to 60 beats per minute
  3. C100 to 140 beats per minute
  4. D20 to 40 beats per minute
2.Easy

What does bile do to fats in the small intestine?

  1. AEmulsifies them into small droplets
  2. BBreaks them into amino acids
  3. CConverts them into glucose
  4. DAbsorbs them directly into the blood
3.Easy

The systolic blood pressure is the pressure in the arteries:

  1. AWhen the atria contract
  2. BBetween two heartbeats, during diastole
  3. CWhen the ventricles contract
  4. DWhen the ventricles relax
4.Medium

Why is the oxygen–haemoglobin dissociation curve S-shaped?

  1. ABinding of one oxygen makes the next bind more easily
  2. BHaemoglobin can bind only one oxygen molecule
  3. COxygen dissolves better in plasma at high partial pressure
  4. DRed cells change size as they take up oxygen
5.Medium

During which phase of the cardiac cycle are all four heart valves closed while ventricular pressure rises?

  1. AAtrial systole
  2. BRapid ejection
  3. CIsovolumetric contraction
  4. DRapid filling
6.Medium

Which ion enters the cell to cause the depolarisation phase of a typical neuronal action potential?

  1. ACalcium (Ca²⁺)
  2. BPotassium (K⁺)
  3. CChloride (Cl⁻)
  4. DSodium (Na⁺)
7.Hard

In Graves' disease, what thyroid function results are expected and why?

  1. ALow T4 and low TSH, because the hypothalamus fails
  2. BHigh T4 and high TSH, because the anterior pituitary gland is overactive
  3. CHigh T4 and low TSH, because antibodies stimulate the TSH receptor
  4. DLow T4 and high TSH, because antibodies destroy the gland
8.Hard

Constriction of the efferent arteriole of a glomerulus, with the afferent arteriole unchanged, tends to:

  1. AHave no effect on GFR at all
  2. BRaise glomerular capillary pressure and GFR
  3. CLower glomerular capillary pressure and GFR
  4. DStop filtration completely

Answer key

  1. 1. A · 60 to 100 beats per minute
  2. 2. A · Emulsifies them into small droplets
  3. 3. C · When the ventricles contract
  4. 4. A · Binding of one oxygen makes the next bind more easily
  5. 5. C · Isovolumetric contraction
  6. 6. D · Sodium (Na⁺)
  7. 7. C · High T4 and low TSH, because antibodies stimulate the TSH receptor
  8. 8. B · Raise glomerular capillary pressure and GFR

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