Human physiology worksheet with answers

What does bile do to fats in the small intestine?

1. AEmulsifies them into small droplets
2. BAbsorbs them directly into the blood
3. CConverts them into glucose
4. DBreaks them into amino acids

What is stroke volume?

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

What is the normal resting heart rate range for a healthy adult?

1. A100 to 140 beats per minute
2. B60 to 100 beats per minute
3. C40 to 60 beats per minute
4. D20 to 40 beats per minute

Mean arterial pressure is approximately equal to:

1. ACardiac output ÷ heart rate
2. BHeart rate × stroke volume
3. CStroke volume × total peripheral vascular resistance
4. DCardiac output × total peripheral resistance

How does glucagon raise blood glucose?

1. AIt blocks insulin receptors on fat cells
2. BIt stimulates glucose uptake by muscle
3. CIt slows glucose absorption from the gut
4. DIt stimulates glycogen breakdown and gluconeogenesis in the liver

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

1. ASodium
2. BCalcium
3. CChloride
4. DPotassium

After a head injury, a patient passes large volumes of very dilute urine and plasma sodium rises. What is the most likely cause?

1. ALack of ADH release (cranial diabetes insipidus)
2. BExcess ADH release (SIADH)
3. CExcess aldosterone
4. DUncontrolled diabetes mellitus

Which change shifts the oxygen–haemoglobin dissociation curve to the right?

1. AHigher temperature
2. BHigher pH
3. CLower CO₂
4. DLower 2,3-BPG