membrane that covers and protects the central nervous system

loss of reproductive capacity in women due to decreased sensitivity of the ovaries to FSH and LH

cycle of the degradation and regrowth of the endometrium

plant region of continuous growth

tissue containing cells that constantly divide; contributes to plant growth

unencapsulated, slowly-adapting mechanoreceptor in the skin that responds to touch

partial cleavage; takes place in cells with a large amount of yolk

middle part of a fruit

portion of a natural ecosystem to be used for experiments

non-living, gel-like matrix present between ectoderm and endoderm in cnidarians

collagen-like gel containing suspended cells that perform various functions in the sponge

middle layer of chlorophyll-rich cells in a leaf

all the chemical reactions that take place inside cells, including anabolism and catabolism

complete set of metabolites which are related to an organism's genetic makeup

study of small molecule metabolites in an organism