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Anatomy: The Study of Tissues

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