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

Which structure of the inner ear converts sound vibrations into nerve signals?

  1. AAuditory tube
  2. BTympanic membrane
  3. CSemicircular canals
  4. DCochlea
2.Easy

Which hormone is mainly produced by the testes?

  1. ATestosterone
  2. BProlactin
  3. CProgesterone
  4. DOxytocin
3.Easy

Which enzyme in saliva starts the digestion of starch?

  1. ASalivary amylase
  2. BPepsin
  3. CLipase
  4. DTrypsin
4.Medium

Why is the oxygen–haemoglobin dissociation curve S-shaped?

  1. AHaemoglobin can bind only one oxygen molecule
  2. BBinding of one oxygen makes the next bind more easily
  3. CRed cells change size as they take up oxygen
  4. DOxygen dissolves better in plasma at high partial pressure
5.Medium

What is anatomical dead space?

  1. AThe volume of the conducting airways where no gas exchange happens
  2. BAlveoli that have collapsed completely
  3. CThe space between the two pleural layers
  4. DThe air that stays in the lungs after full exhalation (residual volume)
6.Medium

How is the ejection fraction calculated?

  1. ACardiac output ÷ heart rate
  2. BEnd-systolic volume ÷ stroke volume
  3. CStroke volume ÷ end-diastolic volume
  4. DEnd-diastolic volume ÷ end-systolic volume
7.Hard

Why does a person with lactase deficiency get diarrhoea and bloating after drinking milk?

  1. AUndigested lactose draws water into the gut and is fermented by colonic bacteria
  2. BMilk protein triggers an allergic reaction
  3. CLactose is absorbed too quickly and raises blood glucose
  4. DLactose damages the villi directly
8.Hard

In a patient with primary hypothyroidism, you would expect:

  1. AHigh TSH and low free T4
  2. BHigh TSH and high free T4
  3. CLow TSH and low free T4
  4. DLow TSH and high free T4

Answer key

  1. 1. D · Cochlea
  2. 2. A · Testosterone
  3. 3. A · Salivary amylase
  4. 4. B · Binding of one oxygen makes the next bind more easily
  5. 5. A · The volume of the conducting airways where no gas exchange happens
  6. 6. C · Stroke volume ÷ end-diastolic volume
  7. 7. A · Undigested lactose draws water into the gut and is fermented by colonic bacteria
  8. 8. A · High TSH and low free T4

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