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.

New worksheetPractise online with hints

For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.

Name: ____________________   Date: ____________

1.Easy

Which hormone is mainly produced by the testes?

  1. ATestosterone
  2. BProgesterone
  3. CProlactin
  4. DOxytocin
2.Easy

Which blood vessels have valves that prevent blood flowing backwards?

  1. ACapillaries
  2. BArterioles
  3. CArteries
  4. DVeins
3.Easy

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

  1. AInterstitial fluid
  2. BCytoplasm
  3. CPlasma
  4. DLymph
4.Medium

Which receptor is stimulated when the patellar tendon is tapped in the knee-jerk reflex?

  1. APacinian corpuscle
  2. BMuscle spindle
  3. CNociceptor
  4. DGolgi tendon organ
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 fall in arterial O₂
  4. DA rise in blood glucose
6.Medium

Besides lowering glucose, insulin moves which ion into cells, an effect used to treat hyperkalaemia?

  1. AChloride
  2. BPotassium
  3. CSodium
  4. DCalcium
7.Hard

Which adaptation develops over days to weeks at high altitude?

  1. ALower ventilation to save oxygen
  2. BHigher erythropoietin levels and more red blood cells
  3. CA fall in haematocrit
  4. DIncreased renal bicarbonate retention
8.Hard

Why does breathing 100% oxygen correct hypoxaemia from a true right-to-left shunt only poorly?

  1. AShunted blood is already fully saturated
  2. BPure oxygen damages haemoglobin
  3. CThe shunted blood never comes into contact with alveolar gas
  4. DThe extra oxygen is all exhaled as CO₂

Answer key

  1. 1. A · Testosterone
  2. 2. D · Veins
  3. 3. C · Plasma
  4. 4. B · Muscle spindle
  5. 5. B · A rise in arterial CO₂
  6. 6. B · Potassium
  7. 7. B · Higher erythropoietin levels and more red blood cells
  8. 8. C · The shunted blood never comes into contact with alveolar gas

Full step-by-step solutions: practise this topic on examproblems.com.