Pyramidal

Pyramidal is a term used in anatomy to describe something that is shaped like a pyramid. It is often used to refer to certain structures in the brain and kidney.

Pyramidal in the Brain

In the brain, the term pyramidal is used to describe a type of neuron known as a pyramidal cell. These cells are found in various parts of the brain including the cerebral cortex, the hippocampus, and the amygdala. Pyramidal cells are the primary excitation units of the mammalian prefrontal cortex and the corticospinal tract. They have a pyramid-shaped soma, or cell body, which gives them their name.

Pyramidal in the Kidney

In the kidney, the term pyramidal is used to describe the renal pyramids. These are cone-shaped tissues of the kidney. In humans, the renal medulla is made up of 10 to 18 of these renal pyramids. The broad base of each pyramid faces the renal cortex, and its apex, or papilla, points internally towards the pelvis.

See Also

• Pyramidal cell
• Renal pyramid
• Cerebral cortex
• Hippocampus
• Amygdala

Pyramidal Resources
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