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 normal resting breathing rate of a healthy adult?

  1. AAbout 25 to 35 breaths per minute
  2. BAbout 12 to 20 breaths per minute
  3. CAbout 4 to 8 breaths per minute
  4. DAbout 40 to 60 breaths per minute
2.Easy

In which direction does oxygen move during gas exchange in the lungs?

  1. AFrom the blood into the bronchi
  2. BFrom the pleura into the blood
  3. CFrom the blood into the alveoli
  4. DFrom the alveoli into the blood
3.Easy

Which hormone lowers blood glucose?

  1. AAdrenaline
  2. BGlucagon
  3. CCortisol
  4. DInsulin
4.Medium

What is the main effect of aldosterone on the kidney?

  1. AIncreased filtration in the glomerulus
  2. BGlucose reabsorption in the proximal tubule
  3. CSodium reabsorption and potassium secretion in the distal nephron
  4. DWater reabsorption by inserting aquaporins only
5.Medium

Which hormonal event triggers ovulation?

  1. AA rise in progesterone from the corpus luteum
  2. BA surge of luteinising hormone (LH)
  3. CA fall in oestrogen
  4. DA surge of prolactin
6.Medium

Mean arterial pressure is approximately equal to:

  1. AStroke volume × total peripheral vascular resistance
  2. BHeart rate × stroke volume
  3. CCardiac output × total peripheral resistance
  4. DCardiac output ÷ heart rate
7.Hard

Why does ketoacidosis typically develop in untreated type 1 diabetes but rarely in type 2?

  1. AKetones are only made in children
  2. BType 1 patients have more glucagon receptors
  3. CType 2 patients cannot make ketones at all
  4. DEven low insulin levels suppress lipolysis and ketogenesis
8.Hard

Why does a deep sea diver risk decompression sickness when surfacing quickly?

  1. AOxygen becomes toxic at the surface
  2. BNitrogen dissolved at high pressure forms bubbles as the pressure falls
  3. CCarbon dioxide cannot leave the lungs fast enough
  4. DThe lungs collapse when the pressure falls

Answer key

  1. 1. B · About 12 to 20 breaths per minute
  2. 2. D · From the alveoli into the blood
  3. 3. D · Insulin
  4. 4. C · Sodium reabsorption and potassium secretion in the distal nephron
  5. 5. B · A surge of luteinising hormone (LH)
  6. 6. C · Cardiac output × total peripheral resistance
  7. 7. D · Even low insulin levels suppress lipolysis and ketogenesis
  8. 8. B · Nitrogen dissolved at high pressure forms bubbles as the pressure falls

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