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 blood vessels have valves that prevent blood flowing backwards?

  1. AArterioles
  2. BCapillaries
  3. CArteries
  4. DVeins
2.Easy

The systolic blood pressure is the pressure in the arteries:

  1. AWhen the atria contract
  2. BWhen the ventricles contract
  3. CBetween two heartbeats, during diastole
  4. DWhen the ventricles relax
3.Easy

Which hormone, made mainly by the kidneys, stimulates red blood cell production?

  1. ARenin
  2. BAldosterone
  3. CErythropoietin
  4. DThrombopoietin
4.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
5.Medium

Cardiac output equals heart rate multiplied by:

  1. AStroke volume
  2. BBlood pressure
  3. CPeripheral resistance
  4. DEjection fraction
6.Medium

Which ion enters the cell to cause the depolarisation phase of a typical neuronal action potential?

  1. APotassium (K⁺)
  2. BSodium (Na⁺)
  3. CCalcium (Ca²⁺)
  4. DChloride (Cl⁻)
7.Hard

In primary adrenal insufficiency (Addison's disease), which combination is expected?

  1. ALow sodium, high potassium and high ACTH
  2. BHigh sodium, low potassium and low ACTH
  3. CHigh sodium, high potassium and high ACTH
  4. DLow sodium, low potassium and low ACTH
8.Hard

What is the main reason the ventricles do not contract at the same moment as the atria?

  1. AThe SA node fires twice per beat
  2. BThe Purkinje fibres conduct slowly
  3. CThe ventricles have a longer refractory period only
  4. DConduction is delayed at the atrioventricular node

Answer key

  1. 1. D · Veins
  2. 2. B · When the ventricles contract
  3. 3. C · Erythropoietin
  4. 4. C · Stroke volume ÷ end-diastolic volume
  5. 5. A · Stroke volume
  6. 6. B · Sodium (Na⁺)
  7. 7. A · Low sodium, high potassium and high ACTH
  8. 8. D · Conduction is delayed at the atrioventricular node

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