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 tidal volume?

  1. AThe air left in the lungs after a full exhalation
  2. BThe volume of air moved in or out in one normal breath
  3. CThe maximum volume of air that can be breathed out after a full breath in
  4. DThe total volume of air in the lungs
2.Easy

What is the typical resting membrane potential of a neuron?

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

Which part of the nervous system is responsible for the "fight or flight" response?

  1. ASympathetic nervous system
  2. BEnteric nervous system
  3. CParasympathetic nervous system
  4. DSomatic nervous system
4.Medium

Since action potentials are all-or-none, how does a neuron signal a stronger stimulus?

  1. ABy making each action potential longer
  2. BBy firing action potentials more often
  3. CBy changing the neurotransmitter it releases
  4. DBy making each action potential larger
5.Medium

The Frank–Starling mechanism describes that:

  1. AHeart rate rises when arterial blood pressure falls suddenly
  2. BStroke volume rises when ventricular filling increases
  3. CThe atria contract after the ventricles
  4. DContractility falls when temperature rises
6.Medium

What causes the first heart sound (S1)?

  1. AClosure of the mitral and tricuspid valves
  2. BBlood filling the atria
  3. CClosure of the aortic and pulmonary valves
  4. DOpening of the aortic valve
7.Hard

In pernicious anaemia, autoimmune destruction of gastric parietal cells leads to anaemia because:

  1. AGastrin is lost, so the bone marrow is no longer stimulated
  2. BIntrinsic factor is lost, so vitamin B12 is not absorbed
  3. CAcid is lost, so iron is never absorbed in any form
  4. DPepsin is lost, so haemoglobin cannot be made
8.Hard

Which spirometry finding is typical of chronic obstructive pulmonary disease (COPD)?

  1. AFEV1/FVC ratio above 0.9 with low FVC
  2. BNormal FEV1 with low FVC
  3. CFEV1/FVC ratio below 0.7
  4. DIncreased peak expiratory flow

Answer key

  1. 1. B · The volume of air moved in or out in one normal breath
  2. 2. A · About −70 mV
  3. 3. A · Sympathetic nervous system
  4. 4. B · By firing action potentials more often
  5. 5. B · Stroke volume rises when ventricular filling increases
  6. 6. A · Closure of the mitral and tricuspid valves
  7. 7. B · Intrinsic factor is lost, so vitamin B12 is not absorbed
  8. 8. C · FEV1/FVC ratio below 0.7

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