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

Exchange of gases and nutrients between blood and tissues happens mainly across the walls of:

  1. AArteries
  2. BArterioles
  3. CCapillaries
  4. DVeins
2.Easy

What does bile do to fats in the small intestine?

  1. AConverts them into glucose
  2. BBreaks them into amino acids
  3. CAbsorbs them directly into the blood
  4. DEmulsifies them into small droplets
3.Easy

Which organ makes most plasma proteins, such as albumin?

  1. ABone marrow
  2. BLiver
  3. CSpleen
  4. DKidney
4.Medium

Mean arterial pressure is approximately equal to:

  1. AHeart rate × stroke volume
  2. BCardiac output × total peripheral resistance
  3. CCardiac output ÷ heart rate
  4. DStroke volume × total peripheral vascular resistance
5.Medium

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

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

Which cells in the stomach secrete hydrochloric acid?

  1. AGoblet cells
  2. BChief cells
  3. CG cells
  4. DParietal cells
7.Hard

Which spirometry finding is typical of chronic obstructive pulmonary disease (COPD)?

  1. AIncreased peak expiratory flow
  2. BFEV1/FVC ratio below 0.7
  3. CFEV1/FVC ratio above 0.9 with low FVC
  4. DNormal FEV1 with low FVC
8.Hard

After a head injury, a patient passes large volumes of very dilute urine and plasma sodium rises. What is the most likely cause?

  1. AExcess aldosterone
  2. BUncontrolled diabetes mellitus
  3. CLack of ADH release (cranial diabetes insipidus)
  4. DExcess ADH release (SIADH)

Answer key

  1. 1. C · Capillaries
  2. 2. D · Emulsifies them into small droplets
  3. 3. B · Liver
  4. 4. B · Cardiac output × total peripheral resistance
  5. 5. D · A rise in arterial CO₂
  6. 6. D · Parietal cells
  7. 7. B · FEV1/FVC ratio below 0.7
  8. 8. C · Lack of ADH release (cranial diabetes insipidus)

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