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

Which hormone does the corpus luteum mainly secrete after ovulation?

  1. ALuteinising hormone
  2. BFollicle-stimulating hormone
  3. CProlactin
  4. DProgesterone
3.Easy

In which direction does oxygen move during gas exchange in the lungs?

  1. AFrom the pleura into the blood
  2. BFrom the blood into the bronchi
  3. CFrom the blood into the alveoli
  4. DFrom the alveoli into the blood
4.Medium

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

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

What is the main stimulus for breathing in a healthy person?

  1. AA rise in blood glucose
  2. BA fall in blood pH caused by lactate only
  3. CA rise in arterial CO₂
  4. DA fall in arterial O₂
6.Medium

Cardiac output equals heart rate multiplied by:

  1. AStroke volume
  2. BPeripheral resistance
  3. CBlood pressure
  4. DEjection fraction
7.Hard

A patient hyperventilating during a panic attack has tingling fingers. What would the arterial blood gas most likely show?

  1. AHigh pH and low PaCO₂
  2. BHigh pH and high bicarbonate
  3. CLow pH and high PaCO₂
  4. DLow pH and low bicarbonate
8.Hard

Which combination of signs is expected in a patient in early hypovolaemic shock after major bleeding?

  1. ABradycardia, cool pale skin and high urine output
  2. BTachycardia, warm flushed skin and high urine output
  3. CTachycardia, cool pale skin and reduced urine output
  4. DBradycardia, warm flushed skin and high urine output

Answer key

  1. 1. D · About −70 mV
  2. 2. D · Progesterone
  3. 3. D · From the alveoli into the blood
  4. 4. D · Binding of one oxygen makes the next bind more easily
  5. 5. C · A rise in arterial CO₂
  6. 6. A · Stroke volume
  7. 7. A · High pH and low PaCO₂
  8. 8. C · Tachycardia, cool pale skin and reduced urine output

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