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 the main function of platelets?

  1. ACarrying carbon dioxide
  2. BProducing antibodies
  3. CBlood clotting
  4. DFighting infection
2.Easy

Which hormones are the main regulators of the body's basal metabolic rate?

  1. AInsulin and glucagon
  2. BMelatonin and serotonin
  3. COestrogen and progesterone (ovarian steroids)
  4. DThyroid hormones (T3 and T4)
3.Easy

What is the liquid part of blood in which the cells are suspended called?

  1. APlasma
  2. BInterstitial fluid
  3. CCytoplasm
  4. DLymph
4.Medium

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

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

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

  1. AAtrial natriuretic peptide
  2. BParathyroid hormone
  3. CAntidiuretic hormone (ADH)
  4. DAldosterone
6.Medium

What does the QRS complex on an ECG represent?

  1. AVentricular depolarisation
  2. BVentricular repolarisation
  3. CAtrial repolarisation
  4. DAtrial depolarisation
7.Hard

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

  1. ASweating has already cooled the body too much
  2. BThe body has lost its ability to produce heat
  3. CThe thermoreceptors in the skin are destroyed
  4. DPyrogens raise the hypothalamic set point above the current body temperature
8.Hard

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

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

Answer key

  1. 1. C · Blood clotting
  2. 2. D · Thyroid hormones (T3 and T4)
  3. 3. A · Plasma
  4. 4. D · A rise in arterial CO₂
  5. 5. C · Antidiuretic hormone (ADH)
  6. 6. A · Ventricular depolarisation
  7. 7. D · Pyrogens raise the hypothalamic set point above the current body temperature
  8. 8. B · The squid giant axon

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