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

Exchange of gases and nutrients between blood and tissues happens mainly across the walls of:

  1. AArteries
  2. BVeins
  3. CCapillaries
  4. DArterioles
2.Easy

Which hormone raises blood calcium levels?

  1. AThyroxine
  2. BCalcitonin
  3. CParathyroid hormone
  4. DInsulin
3.Easy

Which pituitary hormone stimulates the thyroid gland?

  1. AAdrenocorticotropic hormone (ACTH)
  2. BThyroid-stimulating hormone (TSH)
  3. CGrowth hormone (GH)
  4. DLuteinising hormone (LH)
4.Medium

The hormone secretin is released when acid enters the duodenum. What is its main effect?

  1. ABicarbonate secretion from the pancreas
  2. BAcid secretion from the stomach
  3. CInsulin release from the endocrine pancreas
  4. DContraction of the gallbladder
5.Medium

Low plasma albumin, as in severe liver disease, causes oedema mainly because:

  1. APlasma oncotic pressure falls
  2. BLymphatic drainage increases
  3. CThe capillaries become impermeable
  4. DCapillary hydrostatic pressure falls
6.Medium

What is anatomical dead space?

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

A young woman has muscle weakness that gets worse with repeated use and improves with an acetylcholinesterase inhibitor. What is the most likely mechanism?

  1. AAntibodies against acetylcholine receptors at the neuromuscular junction
  2. BDemyelination of central nervous system tracts
  3. CA defect in the dystrophin protein of muscle
  4. DLoss of motor neurons in the spinal cord
8.Hard

After a head injury, a patient passes large volumes of very dilute urine and plasma sodium rises. What is the most likely cause?

  1. AExcess ADH release (SIADH)
  2. BLack of ADH release (cranial diabetes insipidus)
  3. CUncontrolled diabetes mellitus
  4. DExcess aldosterone

Answer key

  1. 1. C · Capillaries
  2. 2. C · Parathyroid hormone
  3. 3. B · Thyroid-stimulating hormone (TSH)
  4. 4. A · Bicarbonate secretion from the pancreas
  5. 5. A · Plasma oncotic pressure falls
  6. 6. B · The volume of the conducting airways where no gas exchange happens
  7. 7. A · Antibodies against acetylcholine receptors at the neuromuscular junction
  8. 8. B · Lack of ADH release (cranial diabetes insipidus)

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