endometrium

n. the layer of cells lining the uterus. It varies in thickness during the menstrual cycle, reaching a peak of cellular proliferation approximately 1 week after ovulation, in preparation for implantation of a fertilized ovum, and sloughing off as menstrual flow 2 weeks after ovulation if the ovum is not fertilized. —endometrial adj.

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Psychology term of the day

May 9th 2024

node of Ranvier

any of successive regularly spaced gaps in the myelin sheath surrounding an axon. The gaps permit the exchange of ions across the plasma membrane at those points, allowing the nerve impulse to leap from one node to the next in so-called saltatory conduction along the axon. [Louis A. Ranvier (1835–1922), French pathologist]