The human body wants blood glucose (blood sugar Regulation in Diabetics) to stay in a very narrow range. Insulin and glucagon are the hormones that make this happen. Both insulin and glucagon are secreted by the pancreas and are therefore called pancreatic endocrine hormones. The image on the left shows the intimate relationship that insulin […]
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Introduction The action potential is the brief (about a thousandth of a second) reversal of the electrical polarization of the membrane of a nerve cell (neuron) or muscle cell. In the neuron, an action potential produces the nerve impulse, and in the muscle cell, it produces the contraction required for all movement. Sometimes called a
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What is physiology? Physiology is the study of how the human body works. Describes the chemistry and physics behind basic body functions, from how molecules behave in cells to how organ systems work together. It helps us understand what happens in a healthy body in everyday life and what goes wrong when someone gets sick.
