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Mitral Valve The mitral valve is a large 'flap' between the two left chambers of the heart. When this is open, it allows oxygenated blood to fill the left ventricle of the heart from the atrium. When the ...

Kidney dialysis

When the concentration of urine is low, the blood will reabsorb more water from the collecting duct. This is via the action of ADH increasing the permeability of the collecting duct walls (via aquaporins)...

The Bowman’s capsule, part of the filtration unit that removes glucose, salt, water, amino acids and urea out of the blood into the nephron.

Digestion takes place in the stomach. Aside from physical digestion due to churning of the stomach muscle, chemical digestion is also important whereby hydrochloric acid produced by the stomach of pH 2, a...