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cortex

The outer layer of an organ, especially the folded gray outer layer of the brain.

KOR-teks noun

Word parts

What it means

The outside layer of an organ, as opposed to its inner part (medulla). The cerebral cortex is the brain's wrinkled surface, where thinking, language, memory, movement and the senses are processed. The adrenal cortex makes hormones such as cortisolKOR-tih-solA steroid hormone made by the adrenal glands that helps control blood sugar, blood pressure, stress and inflammation.Full entry and aldosteroneal-DOS-tuh-rohnA hormone from the adrenal glands that makes the kidneys keep sodium and water and get rid of potassium.aldo- from aldehyde (a chemical group)-sterone steroid hormoneFull entry . The kidney's cortex holds most of its filters.

At a glance

Spanishcorteza
Also writtencortical

Related terms

cortisol

A steroid hormone made by the adrenal glands that helps control blood sugar, blood pressure, stress and inflammation.

aldosterone

A hormone from the adrenal glands that makes the kidneys keep sodium and water and get rid of potassium.

temporal lobe

The part of each side of the brain, above the ear, that handles hearing, memory and understanding language.

cerebral

Having to do with the brain, especially the cerebrum, its largest part.

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