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 typical resting membrane potential of a neuron?

  1. AAbout −70 mV
  2. BAbout +70 mV
  3. CAbout 0 mV
  4. DAbout −10 mV
2.Easy

Most homeostatic control systems in the body work by:

  1. APositive feedback
  2. BRandom variation
  3. CNegative feedback
  4. DFeed-forward only
3.Easy

Which organ makes most plasma proteins, such as albumin?

  1. ASpleen
  2. BLiver
  3. CKidney
  4. DBone marrow
4.Medium

What is the normal pH range of arterial blood?

  1. A7.00 to 7.20
  2. B6.80 to 7.00
  3. C7.35 to 7.45
  4. D7.50 to 7.65
5.Medium

Which protein forms the mesh that stabilises a blood clot?

  1. ACollagen
  2. BThrombin
  3. CFibrin
  4. DAlbumin
6.Medium

What does the QRS complex on an ECG represent?

  1. AVentricular depolarisation
  2. BVentricular repolarisation
  3. CAtrial depolarisation
  4. DAtrial repolarisation
7.Hard

At the start of a fever, a patient shivers and feels cold even though body temperature is rising. Why?

  1. ASweating has already cooled the body too much
  2. BThe body has lost its ability to produce heat
  3. CThe thermoreceptors in the skin are destroyed
  4. DPyrogens raise the hypothalamic set point above the current body temperature
8.Hard

Why is severe hyperkalaemia dangerous for the heart?

  1. AIt depolarises cardiac cells, inactivating sodium channels and causing arrhythmias
  2. BIt speeds up the SA node until tachycardia causes fainting
  3. CIt blocks the binding of calcium to troponin
  4. DIt hyperpolarises cardiac cells, so they can never fire

Answer key

  1. 1. A · About −70 mV
  2. 2. C · Negative feedback
  3. 3. B · Liver
  4. 4. C · 7.35 to 7.45
  5. 5. C · Fibrin
  6. 6. A · Ventricular depolarisation
  7. 7. D · Pyrogens raise the hypothalamic set point above the current body temperature
  8. 8. A · It depolarises cardiac cells, inactivating sodium channels and causing arrhythmias

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