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Exocrine Glands

are glands that secrete their products into ducts (duct glands). They are the counterparts to endocrine glands, which secrete their products directly into the bloodstream (ductless glands).

endocrine glands

Is what produces and relase hormones that speed up/slow down or turn on/off a organ or system, this is released through the bloodstream

merocrine glands

Secrete directly through cell membrane; secretion proceeds with no damage to cell wall and no loss of cytoplasm; most numerous gland types

apocrine glands

the producers of a thick, milky secretion that opens directly into the hair follicles. located in the axillae, anogenital area, nipple, and naval....highly vestigal in humans. Become active during puberty, and are stimulated with emotion and sexual stimulation

holocrine gland

A gland whose secretion consists of disintegrated cells of the gland itself, e.g., a sebaceous gland, in contrast to a merocrine

extracellular matrix

external to internal communication, the substance in which animal tissue cells are embedded, consisting of protein and polysaccharides synthesized and secreted by cells, glycoproteins/proteoglycans


large flat cells with branching processes. Migrate through the connective tissue, secreting the fibers and ground substance of the matrix


Cartilage cells, are embedded in a matrix of collagen. Cartilage makes up most of the respiratory passages and is also found in ears

stromal cells

cells that provide the supporting framework of a tissue or organ.

parenchymal cells

traditional plant cells; lack secondary cell walls; protoplast has large central vacuole; perform most of metabolic functions of the plant (photosynthesis in leaves, store starch in stems and roots), can differentiate into other cell types after a plant has been injured

labile cells

the skin mucous membranes blood cell forming tissue and lymphoid tissue are comprised of labile cells

stable cells

Cells that do not actively divide after growth ceases. They are capable of regeneration. (Glands, connective tissue)

permanent cells

nondividing cells, which cannot undergo division in postnatal life, for example, neurons, skeletal muscle, and cardiac muscle

Basement membrane

The structure that attaches most epithelia to underlying tissue; consists of carbohydrates and proteins secreted by the epithelia and the underlying connective tissue.

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