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

Which enzyme in saliva starts the digestion of starch?

  1. ATrypsin
  2. BSalivary amylase
  3. CPepsin
  4. DLipase
2.Easy

Most homeostatic control systems in the body work by:

  1. APositive feedback
  2. BFeed-forward only
  3. CRandom variation
  4. DNegative feedback
3.Easy

Which vitamin is needed by the liver to make several clotting factors?

  1. AVitamin C
  2. BVitamin K
  3. CVitamin B12
  4. DVitamin D
4.Medium

How does glucagon raise blood glucose?

  1. AIt slows glucose absorption from the gut
  2. BIt blocks insulin receptors on fat cells
  3. CIt stimulates glycogen breakdown and gluconeogenesis in the liver
  4. DIt stimulates glucose uptake by muscle
5.Medium

What is the normal pH range of arterial blood?

  1. A7.00 to 7.20
  2. B6.80 to 7.00
  3. C7.50 to 7.65
  4. D7.35 to 7.45
6.Medium

Cardiac output equals heart rate multiplied by:

  1. APeripheral resistance
  2. BEjection fraction
  3. CBlood pressure
  4. DStroke volume
7.Hard

Why does left ventricular failure cause pulmonary oedema?

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

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

  1. ALow T4 and high TSH, because antibodies destroy the gland
  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 low TSH, because the hypothalamus fails

Answer key

  1. 1. B · Salivary amylase
  2. 2. D · Negative feedback
  3. 3. B · Vitamin K
  4. 4. C · It stimulates glycogen breakdown and gluconeogenesis in the liver
  5. 5. D · 7.35 to 7.45
  6. 6. D · Stroke volume
  7. 7. D · Raised left atrial pressure increases pulmonary capillary hydrostatic pressure
  8. 8. C · High T4 and low TSH, because antibodies stimulate the TSH receptor

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