(countable, anatomy) The outer layer of an internal organ or body structure, such as the kidney or the brain.

plural of cortex

The medial prefrontal cortex of the human brain.

(anatomy) The outer portion of the adrenal glands that produces hormones essential to homeostasis.

(anatomy) A part of the brain which, together with the hippocampus, is important to memory functions

the somatic sensory cortex

(neuroanatomy) The grey, folded, outermost layer of the cerebrum that is responsible for higher brain processes such as sensation, voluntary muscle movement, thought, reasoning, and memory.

plural of renal cortex

(anatomy) The medial part of the cortex, between the corpus callosum to the cingulate sulcus

(neuroanatomy) The anterior part of the frontal lobes of the mammalian brain, lying in front of the motor and premotor areas.