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Sciatic nerve
The sciatic nerve is a large nerve that runs down the lower limb. It is the longest single nerve in the body. Pain caused by a compressed or damaged sciatic nerve is called sciatica. Arising from ... > more -
Human physiology
Human physiology is the science of the mechanical, physical, and biochemical functions of normal humans or human tissues or organs. The principal level of focus of physiology is at the level of ... > more -
Cell (biology)
The cell is the structural and functional unit of all living organisms, and is sometimes called the "building block of life." Some organisms, such as bacteria, are unicellular, consisting of a single ... > more -
Hermit crab
Hermit crabs are distinct from the true crabs in the infra-order Brachyura. Most hermit crabs salvage empty seashells to shelter and protect their soft abdomens. There are several species of hermit ... > more
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