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

Where is most of the nutrient absorption in the digestive tract?

  1. AStomach
  2. BSmall intestine
  3. CLarge intestine
  4. DOesophagus
2.Easy

Which organ makes most plasma proteins, such as albumin?

  1. ABone marrow
  2. BSpleen
  3. CKidney
  4. DLiver
3.Easy

Which hormone is mainly produced by the testes?

  1. AOxytocin
  2. BTestosterone
  3. CProgesterone
  4. DProlactin
4.Medium

Which cells in the stomach secrete hydrochloric acid?

  1. AGoblet cells
  2. BParietal cells
  3. CG cells
  4. DChief cells
5.Medium

What is the main stimulus for breathing in a healthy person?

  1. AA fall in blood pH caused by lactate only
  2. BA rise in arterial CO₂
  3. CA rise in blood glucose
  4. DA fall in arterial O₂
6.Medium

What is the main effect of vagus nerve stimulation on the heart?

  1. AIt slows the heart rate
  2. BIt constricts the coronary arteries
  3. CIt increases the heart rate
  4. DIt increases ventricular contractility strongly
7.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 becomes very high, acting as dead space
  2. BIt stays normal because ventilation falls too
  3. CIt becomes zero, acting as a shunt
  4. DIt becomes low, like in pneumonia
8.Hard

Hodgkin and Huxley's classic studies of the ionic basis of the action potential used which preparation?

  1. AThe cat spinal cord
  2. BThe frog sciatic nerve–muscle preparation
  3. CCultured human cortical neurons
  4. DThe squid giant axon

Answer key

  1. 1. B · Small intestine
  2. 2. D · Liver
  3. 3. B · Testosterone
  4. 4. B · Parietal cells
  5. 5. B · A rise in arterial CO₂
  6. 6. A · It slows the heart rate
  7. 7. A · It becomes very high, acting as dead space
  8. 8. D · The squid giant axon

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