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. AArterioles
  2. BArteries
  3. CVeins
  4. DCapillaries
2.Easy

What is the main function of platelets?

  1. AFighting infection
  2. BBlood clotting
  3. CProducing antibodies
  4. DCarrying carbon dioxide
3.Easy

What is the normal resting breathing rate of a healthy adult?

  1. AAbout 4 to 8 breaths per minute
  2. BAbout 25 to 35 breaths per minute
  3. CAbout 12 to 20 breaths per minute
  4. DAbout 40 to 60 breaths per minute
4.Medium

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

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

According to Poiseuille's law, if the radius of an arteriole halves, its resistance to flow:

  1. AHalves
  2. BIncreases 4-fold
  3. CIncreases about 16-fold
  4. DDoubles
6.Medium

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

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

A patient's arterial blood gas shows pH 7.30, PaCO₂ 7.8 kPa (59 mmHg) and normal bicarbonate. What is the most likely disturbance?

  1. AAcute respiratory acidosis
  2. BMetabolic acidosis
  3. CRespiratory alkalosis
  4. DCompensated metabolic alkalosis
8.Hard

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

  1. ABradycardia, warm flushed skin and high urine output
  2. BTachycardia, warm flushed skin and high urine output
  3. CTachycardia, cool pale skin and reduced urine output
  4. DBradycardia, cool pale skin and high urine output

Answer key

  1. 1. D · Capillaries
  2. 2. B · Blood clotting
  3. 3. C · About 12 to 20 breaths per minute
  4. 4. A · The sarcoplasmic reticulum
  5. 5. C · Increases about 16-fold
  6. 6. A · The filtered load exceeds the tubular transport maximum
  7. 7. A · Acute respiratory acidosis
  8. 8. C · Tachycardia, cool pale skin and reduced urine output

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