Examlex
A lunar eclipse occurs only when the Moon is new.
Endometrium
Mucous membrane composing the inner layer of the uterine wall; consists of a simple columnar epithelium and a lamina propria that contains simple tubular uterine glands.
Germ Layers
The three primary layers of cells (ectoderm, mesoderm, and endoderm) in the early embryo, from which all tissues and organs develop.
Cardiovascular
Relating to the heart and blood vessels, encompassing the entire circulatory system.
Ectoderm
The outermost layer of cells or tissue of an embryo in early development, giving rise to the skin and nervous system.
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