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There are various mechanisms by which the kidney produces concentrated urine. The most important of these are the loop of Henle and the role of ADH, anti-diuretic hormone. Let's examine each of th...
The membrane potential describes the movement of charged ions across a membrane. A positive membrane potential indicates net movement of positive charge into the cell, or net movement of negative charge o...
Depolarisation of the membrane in a myelinated neurone occurs in gaps between the schwann cells of the myelin sheath known as nodes of Ranvier. During depolarisation of the membrane at a node there is an ...
The pancreas is located in the central abdomen and is responsible for a variety of endocrine and exocrine functions.
Its endocrine (into blood) functions include the release of insulin (to control...
The high concentration of glucose in the blood is detected by the pancreas. Beta cells in the pancreas secrete insulin and the alpha cells cease production of glucagon. The insulin binds to specific recep...
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