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 ion triggers contraction by binding to troponin in skeletal muscle?

  1. AChloride
  2. BPotassium
  3. CCalcium
  4. DSodium
2.Easy

Which organ makes most plasma proteins, such as albumin?

  1. ALiver
  2. BSpleen
  3. CBone marrow
  4. DKidney
3.Easy

Most homeostatic control systems in the body work by:

  1. ANegative feedback
  2. BFeed-forward only
  3. CRandom variation
  4. DPositive feedback
4.Medium

What does the QRS complex on an ECG represent?

  1. AAtrial depolarisation
  2. BVentricular repolarisation
  3. CVentricular depolarisation
  4. DAtrial repolarisation
5.Medium

Vital capacity is the sum of which lung volumes?

  1. ATidal volume, inspiratory reserve volume and expiratory reserve volume
  2. BInspiratory reserve volume and residual volume
  3. CTidal volume and residual volume
  4. DResidual volume and expiratory reserve volume
6.Medium

Which cells in the stomach secrete hydrochloric acid?

  1. AParietal cells
  2. BGoblet cells
  3. CG cells
  4. DChief cells
7.Hard

A healthy person stands up quickly after lying down. Which reflex response prevents fainting?

  1. AThe chemoreceptor reflex raises breathing rate and arterial oxygen levels
  2. BADH release immediately doubles blood volume
  3. CThe Bainbridge reflex lowers heart rate
  4. DThe baroreceptor reflex raises heart rate and vasoconstriction
8.Hard

A patient has taken high-dose prednisolone for a year. What is the state of the hypothalamic–pituitary–adrenal axis?

  1. AACTH is suppressed and the adrenal cortex has atrophied
  2. BACTH is high and the adrenal cortex is enlarged
  3. CThe adrenal medulla has stopped making adrenaline and noradrenaline
  4. DACTH is normal and cortisol production is increased

Answer key

  1. 1. C · Calcium
  2. 2. A · Liver
  3. 3. A · Negative feedback
  4. 4. C · Ventricular depolarisation
  5. 5. A · Tidal volume, inspiratory reserve volume and expiratory reserve volume
  6. 6. A · Parietal cells
  7. 7. D · The baroreceptor reflex raises heart rate and vasoconstriction
  8. 8. A · ACTH is suppressed and the adrenal cortex has atrophied

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