Practice FPSC questions with answers and explanations.
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The gallbladder stores and concentrates bile made by the liver.
It releases bile into the small intestine.
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Salivary amylase starts breaking starch into smaller sugars.
Its action continues briefly after swallowing.
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Pepsin works in the acidic stomach environment.
It breaks proteins into smaller peptides.
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Lipase hydrolyzes fats into fatty acids and glycerol.
It acts mainly in the small intestine.
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Beta cells in the pancreas produce insulin.
The hormone helps lower blood glucose.
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Insulin promotes glucose uptake and storage.
Deficiency or resistance can lead to diabetes mellitus.
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The lungs exchange oxygen and carbon dioxide with the blood.
They contain millions of alveoli.
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Kidneys remove metabolic wastes and regulate water and salts.
The resulting fluid becomes urine.
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Alveoli have thin walls and rich capillary networks.
Their large surface area supports rapid diffusion.
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Each nephron filters blood and modifies the filtrate.
Millions of nephrons work together in the kidneys.
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The diaphragm contracts and flattens during inhalation.
Relaxation helps reduce chest volume during exhalation.
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Urine flows from kidneys through ureters to the bladder.
The bladder stores it until urination.
