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 neurotransmitter is released at the neuromuscular junction of skeletal muscle?

  1. ASerotonin
  2. BNoradrenaline
  3. CAcetylcholine
  4. DDopamine
2.Easy

What is normal core body temperature in an adult, approximately?

  1. A37 °C
  2. B36 °C
  3. C38.5 °C
  4. D35 °C
3.Easy

Which cells secrete antibodies?

  1. AHelper T cells
  2. BPlasma cells
  3. CMacrophages
  4. DNeutrophils
4.Medium

Which ABO blood group has both anti-A and anti-B antibodies in the plasma?

  1. AGroup O
  2. BGroup B
  3. CGroup AB
  4. DGroup A
5.Medium

Where does the final activation step of vitamin D (1-alpha hydroxylation) take place?

  1. ALiver
  2. BKidney
  3. CSmall intestine
  4. DSkin
6.Medium

Where is the heart's natural pacemaker?

  1. APurkinje fibres
  2. BAtrioventricular node
  3. CBundle of His
  4. DSinoatrial node
7.Hard

Which substance's clearance is used as the gold standard to measure glomerular filtration rate?

  1. AInulin
  2. BUrea
  3. CGlucose
  4. DCreatinine
8.Hard

During exercise, blood flow to active skeletal muscle rises greatly. What is the main cause?

  1. AThe heart pumps blood only to the muscles
  2. BThe parasympathetic system dilates all arteries
  3. CLocal metabolites such as CO₂, H⁺, K⁺ and adenosine dilate the arterioles
  4. DSympathetic stimulation constricts the muscle arterioles via alpha receptors

Answer key

  1. 1. C · Acetylcholine
  2. 2. A · 37 °C
  3. 3. B · Plasma cells
  4. 4. A · Group O
  5. 5. B · Kidney
  6. 6. D · Sinoatrial node
  7. 7. A · Inulin
  8. 8. C · Local metabolites such as CO₂, H⁺, K⁺ and adenosine dilate the arterioles

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