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 structure of the inner ear converts sound vibrations into nerve signals?

  1. AAuditory tube
  2. BSemicircular canals
  3. CCochlea
  4. DTympanic membrane
2.Easy

Which gland is often called the "master gland" because it controls many other endocrine glands?

  1. APineal gland
  2. BPituitary gland
  3. CThyroid gland
  4. DAdrenal gland
3.Easy

Which ion triggers contraction by binding to troponin in skeletal muscle?

  1. ASodium
  2. BChloride
  3. CCalcium
  4. DPotassium
4.Medium

Which hormone makes the gallbladder contract after a fatty meal?

  1. ASecretin
  2. BInsulin
  3. CCholecystokinin (CCK)
  4. DGastrin
5.Medium

In skeletal muscle, where does most of the calcium for contraction come from?

  1. AThe nucleus
  2. BThe sarcoplasmic reticulum
  3. CThe mitochondria
  4. DThe extracellular fluid
6.Medium

What is the main effect of aldosterone on the kidney?

  1. AWater reabsorption by inserting aquaporins only
  2. BGlucose reabsorption in the proximal tubule
  3. CSodium reabsorption and potassium secretion in the distal nephron
  4. DIncreased filtration in the glomerulus
7.Hard

Which combination of signs is expected in a patient in early hypovolaemic shock after major bleeding?

  1. ABradycardia, cool pale skin and high urine output
  2. BBradycardia, warm flushed skin and high urine output
  3. CTachycardia, warm flushed skin and high urine output
  4. DTachycardia, cool pale skin and reduced urine output
8.Hard

In Otto Loewi's classic experiment, fluid from a vagus-stimulated frog heart slowed a second heart. What did this show?

  1. ANerves pass signals to their targets by releasing a chemical
  2. BThe heart beats without any nerve supply
  3. CThe vagus nerve speeds up the heart
  4. DNerve impulses spread through the fluid directly as electricity

Answer key

  1. 1. C · Cochlea
  2. 2. B · Pituitary gland
  3. 3. C · Calcium
  4. 4. C · Cholecystokinin (CCK)
  5. 5. B · The sarcoplasmic reticulum
  6. 6. C · Sodium reabsorption and potassium secretion in the distal nephron
  7. 7. D · Tachycardia, cool pale skin and reduced urine output
  8. 8. A · Nerves pass signals to their targets by releasing a chemical

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