Human physiology worksheet with answers

Which part of the nervous system is responsible for the "fight or flight" response?

1. AEnteric nervous system
2. BSympathetic nervous system
3. CSomatic nervous system
4. DParasympathetic nervous system

Which structure of the inner ear converts sound vibrations into nerve signals?

1. AAuditory tube
2. BCochlea
3. CTympanic membrane
4. DSemicircular canals

What is the liquid part of blood in which the cells are suspended called?

1. APlasma
2. BCytoplasm
3. CInterstitial fluid
4. DLymph

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

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

What is anatomical dead space?

1. AThe space between the two pleural layers
2. BAlveoli that have collapsed completely
3. CThe air that stays in the lungs after full exhalation (residual volume)
4. DThe volume of the conducting airways where no gas exchange happens

The Frank–Starling mechanism describes that:

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

In long-standing aortic stenosis, how does the left ventricle adapt?

1. ANo change because the valve is not part of the ventricle
2. BThinning of the wall with dilation
3. CAtrophy of the muscle due to less work
4. DConcentric hypertrophy with a thicker wall

Which adaptation develops over days to weeks at high altitude?

1. ALower ventilation to save oxygen
2. BA fall in haematocrit
3. CIncreased renal bicarbonate retention
4. DHigher erythropoietin levels and more red blood cells