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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1.Easy

Which type of white blood cell is the most numerous in healthy adult blood?

  1. ALymphocytes
  2. BMonocytes
  3. CNeutrophils
  4. DEosinophils
2.Easy

What is the liquid part of blood in which the cells are suspended called?

  1. AInterstitial fluid
  2. BLymph
  3. CPlasma
  4. DCytoplasm
3.Easy

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

  1. AAldosterone
  2. BThrombopoietin
  3. CErythropoietin
  4. DRenin
4.Medium

What is anatomical dead space?

  1. AThe volume of the conducting airways where no gas exchange happens
  2. BAlveoli that have collapsed completely
  3. CThe air that stays in the lungs after full exhalation (residual volume)
  4. DThe space between the two pleural layers
5.Medium

What is the main effect of vagus nerve stimulation on the heart?

  1. AIt constricts the coronary arteries
  2. BIt increases the heart rate
  3. CIt slows the heart rate
  4. DIt increases ventricular contractility strongly
6.Medium

During contraction of a skeletal muscle sarcomere, which band stays the same length?

  1. AH zone
  2. BA band
  3. CI band
  4. DThe whole sarcomere
7.Hard

According to the length–tension relationship, why does a skeletal muscle fibre produce less force when overstretched?

  1. AThe neuromuscular junction stops working
  2. BActin and myosin overlap less, so fewer cross-bridges form
  3. CCalcium is no longer released from the sarcoplasmic reticulum when stretched
  4. DThe muscle runs out of ATP when stretched
8.Hard

After several days of persistent vomiting of stomach contents, which acid–base disturbance is most likely?

  1. AMetabolic acidosis
  2. BRespiratory acidosis
  3. CRespiratory alkalosis
  4. DMetabolic alkalosis

Answer key

  1. 1. C · Neutrophils
  2. 2. C · Plasma
  3. 3. C · Erythropoietin
  4. 4. A · The volume of the conducting airways where no gas exchange happens
  5. 5. C · It slows the heart rate
  6. 6. B · A band
  7. 7. B · Actin and myosin overlap less, so fewer cross-bridges form
  8. 8. D · Metabolic alkalosis

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