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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...

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration, through a partially permeable membrane. 

Exercise has both long term and short term effects on the body. 

Short term effects include increased heart rate, increased cardiac output (volume of blood pumped out by the heart each minute, incr...