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

Most homeostatic control systems in the body work by:

  1. APositive feedback
  2. BFeed-forward only
  3. CNegative feedback
  4. DRandom variation
2.Easy

Which cells secrete antibodies?

  1. AMacrophages
  2. BNeutrophils
  3. CHelper T cells
  4. DPlasma cells
3.Easy

Which mineral is an essential part of haemoglobin?

  1. AIron
  2. BCalcium
  3. CZinc
  4. DIodine
4.Medium

Which protein forms the mesh that stabilises a blood clot?

  1. AFibrin
  2. BThrombin
  3. CCollagen
  4. DAlbumin
5.Medium

Where does the final activation step of vitamin D (1-alpha hydroxylation) take place?

  1. AKidney
  2. BSmall intestine
  3. CSkin
  4. DLiver
6.Medium

Which cells in the stomach secrete hydrochloric acid?

  1. AChief cells
  2. BGoblet cells
  3. CParietal cells
  4. DG cells
7.Hard

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

  1. ARaise glomerular capillary pressure and GFR
  2. BLower glomerular capillary pressure and GFR
  3. CStop filtration completely
  4. DHave no effect on GFR at all
8.Hard

A pulmonary embolus blocks blood flow to a well-ventilated region of lung. How does the ventilation–perfusion (V/Q) ratio of that region change?

  1. AIt stays normal because ventilation falls too
  2. BIt becomes zero, acting as a shunt
  3. CIt becomes low, like in pneumonia
  4. DIt becomes very high, acting as dead space

Answer key

  1. 1. C · Negative feedback
  2. 2. D · Plasma cells
  3. 3. A · Iron
  4. 4. A · Fibrin
  5. 5. A · Kidney
  6. 6. C · Parietal cells
  7. 7. A · Raise glomerular capillary pressure and GFR
  8. 8. D · It becomes very high, acting as dead space

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