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 blood vessels have valves that prevent blood flowing backwards?

  1. AArteries
  2. BArterioles
  3. CVeins
  4. DCapillaries
2.Easy

Which hormone raises blood calcium levels?

  1. AThyroxine
  2. BInsulin
  3. CParathyroid hormone
  4. DCalcitonin
3.Easy

Most homeostatic control systems in the body work by:

  1. ARandom variation
  2. BNegative feedback
  3. CPositive feedback
  4. DFeed-forward only
4.Medium

Which hormone makes the gallbladder contract after a fatty meal?

  1. ACholecystokinin (CCK)
  2. BGastrin
  3. CInsulin
  4. DSecretin
5.Medium

Vital capacity is the sum of which lung volumes?

  1. ATidal volume and residual volume
  2. BResidual volume and expiratory reserve volume
  3. CInspiratory reserve volume and residual volume
  4. DTidal volume, inspiratory reserve volume and expiratory reserve volume
6.Medium

Why does glucose appear in the urine in uncontrolled diabetes mellitus?

  1. AThe filtered load exceeds the tubular transport maximum
  2. BThe collecting duct actively secretes glucose
  3. CThe glomerulus stops filtering glucose
  4. DInsulin is needed for glucose reabsorption in the tubule
7.Hard

Why does fetal haemoglobin have a higher affinity for oxygen than adult haemoglobin?

  1. AIt has five subunits instead of four
  2. BIt contains more iron per haem
  3. CFetal blood has a higher pH
  4. DIt binds 2,3-BPG less strongly
8.Hard

Why does ketoacidosis typically develop in untreated type 1 diabetes but rarely in type 2?

  1. AKetones are only made in children
  2. BEven low insulin levels suppress lipolysis and ketogenesis
  3. CType 1 patients have more glucagon receptors
  4. DType 2 patients cannot make ketones at all

Answer key

  1. 1. C · Veins
  2. 2. C · Parathyroid hormone
  3. 3. B · Negative feedback
  4. 4. A · Cholecystokinin (CCK)
  5. 5. D · Tidal volume, inspiratory reserve volume and expiratory reserve volume
  6. 6. A · The filtered load exceeds the tubular transport maximum
  7. 7. D · It binds 2,3-BPG less strongly
  8. 8. B · Even low insulin levels suppress lipolysis and ketogenesis

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