Human physiology worksheet with answers

Which hormone, made mainly by the kidneys, stimulates red blood cell production?

1. AErythropoietin
2. BAldosterone
3. CThrombopoietin
4. DRenin

What is stroke volume?

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

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

1. A36 °C
2. B38.5 °C
3. C35 °C
4. D37 °C

During contraction of a skeletal muscle sarcomere, which band stays the same length?

1. AI band
2. BA band
3. CThe whole sarcomere
4. DH zone

Which cells in the stomach secrete hydrochloric acid?

1. AG cells
2. BGoblet cells
3. CChief cells
4. DParietal cells

Besides lowering glucose, insulin moves which ion into cells, an effect used to treat hyperkalaemia?

1. ACalcium
2. BChloride
3. CSodium
4. DPotassium

In pernicious anaemia, autoimmune destruction of gastric parietal cells leads to anaemia because:

1. AAcid is lost, so iron is never absorbed in any form
2. BPepsin is lost, so haemoglobin cannot be made
3. CIntrinsic factor is lost, so vitamin B12 is not absorbed
4. DGastrin is lost, so the bone marrow is no longer stimulated

A healthy person stands up quickly after lying down. Which reflex response prevents fainting?

1. AADH release immediately doubles blood volume
2. BThe chemoreceptor reflex raises breathing rate and arterial oxygen levels
3. CThe baroreceptor reflex raises heart rate and vasoconstriction
4. DThe Bainbridge reflex lowers heart rate