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 hormone, released by the stomach lining, stimulates gastric acid secretion?

  1. AGlucagon
  2. BGastrin
  3. CInsulin
  4. DSecretin
2.Easy

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

  1. APlasma
  2. BLymph
  3. CCytoplasm
  4. DInterstitial fluid
3.Easy

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

  1. AEosinophils
  2. BNeutrophils
  3. CLymphocytes
  4. DMonocytes
4.Medium

The Frank–Starling mechanism describes that:

  1. AContractility falls when temperature rises
  2. BThe atria contract after the ventricles
  3. CStroke volume rises when ventricular filling increases
  4. DHeart rate rises when arterial blood pressure falls suddenly
5.Medium

Which hormonal event triggers ovulation?

  1. AA rise in progesterone from the corpus luteum
  2. BA fall in oestrogen
  3. CA surge of luteinising hormone (LH)
  4. DA surge of prolactin
6.Medium

Which receptor is stimulated when the patellar tendon is tapped in the knee-jerk reflex?

  1. APacinian corpuscle
  2. BNociceptor
  3. CMuscle spindle
  4. DGolgi tendon organ
7.Hard

Why does left ventricular failure cause pulmonary oedema?

  1. AThe bronchial arteries become blocked
  2. BThe right ventricle pumps less blood into the lungs
  3. CPlasma oncotic pressure in the lungs rises sharply
  4. DRaised left atrial pressure increases pulmonary capillary hydrostatic pressure
8.Hard

Which transporter in the thick ascending limb of the loop of Henle is key to building the medullary concentration gradient?

  1. AThe Na⁺–K⁺–2Cl⁻ cotransporter (NKCC2)
  2. BAquaporin-2 water channels
  3. CThe sodium–glucose cotransporter (SGLT2)
  4. DThe epithelial sodium channel (ENaC)

Answer key

  1. 1. B · Gastrin
  2. 2. A · Plasma
  3. 3. B · Neutrophils
  4. 4. C · Stroke volume rises when ventricular filling increases
  5. 5. C · A surge of luteinising hormone (LH)
  6. 6. C · Muscle spindle
  7. 7. D · Raised left atrial pressure increases pulmonary capillary hydrostatic pressure
  8. 8. A · The Na⁺–K⁺–2Cl⁻ cotransporter (NKCC2)

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