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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Name: ____________________   Date: ____________

1.Easy

Which vitamin is needed by the liver to make several clotting factors?

  1. AVitamin D
  2. BVitamin K
  3. CVitamin B12
  4. DVitamin C
2.Easy

Where is most of the nutrient absorption in the digestive tract?

  1. ASmall intestine
  2. BStomach
  3. CLarge intestine
  4. DOesophagus
3.Easy

What is stroke volume?

  1. AThe volume of blood left in a ventricle after contraction
  2. BThe volume of blood ejected by a ventricle in one beat
  3. CThe volume of blood pumped by the heart per minute
  4. DThe volume of blood in a ventricle at the end of filling
4.Medium

The Frank–Starling mechanism describes that:

  1. AStroke volume rises when ventricular filling increases
  2. BHeart rate rises when arterial blood pressure falls suddenly
  3. CContractility falls when temperature rises
  4. DThe atria contract after the ventricles
5.Medium

How is the ejection fraction calculated?

  1. AStroke volume ÷ end-diastolic volume
  2. BEnd-systolic volume ÷ stroke volume
  3. CEnd-diastolic volume ÷ end-systolic volume
  4. DCardiac output ÷ heart rate
6.Medium

Since action potentials are all-or-none, how does a neuron signal a stronger stimulus?

  1. ABy firing action potentials more often
  2. BBy making each action potential larger
  3. CBy making each action potential longer
  4. DBy changing the neurotransmitter it releases
7.Hard

Constriction of the efferent arteriole of a glomerulus, with the afferent arteriole unchanged, tends to:

  1. AStop filtration completely
  2. BRaise glomerular capillary pressure and GFR
  3. CLower glomerular capillary pressure and GFR
  4. DHave no effect on GFR at all
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. AUncontrolled diabetes mellitus
  2. BExcess ADH release (SIADH)
  3. CLack of ADH release (cranial diabetes insipidus)
  4. DExcess aldosterone

Answer key

  1. 1. B · Vitamin K
  2. 2. A · Small intestine
  3. 3. B · The volume of blood ejected by a ventricle in one beat
  4. 4. A · Stroke volume rises when ventricular filling increases
  5. 5. A · Stroke volume ÷ end-diastolic volume
  6. 6. A · By firing action potentials more often
  7. 7. B · Raise glomerular capillary pressure and GFR
  8. 8. C · Lack of ADH release (cranial diabetes insipidus)

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