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lipid storage cells

adipose tissue

specialized areolar tissue rich in stored fat

anchoring junction

mechanically attaches adjacent cells to each other or to the basement membrane


that part of a cell or tissue which, in general, faces an open space

apocrine secretion

release of a substance along with the apical portion of the cell


programmed cell death

areolar tissue

(also, loose connective tissue) a type of connective tissue proper that shows little specialization with cells dispersed in the matrix


star-shaped cell in the central nervous system that regulates ions and uptake and/or breakdown of some neurotransmitters and contributes to the formation of the blood-brain barrier


loss of mass and function


basal lamina

thin extracellular layer that lies underneath epithelial cells and separates them from other tissues

basement membrane

in epithelial tissue, a thin layer of fibrous material that anchors the epithelial tissue to the underlying connective tissue; made up of the basal lamina and reticular lamina


cardiac muscle

heart muscle, under involuntary control, composed of striated cells that attach to form fibers, each cell contains a single nucleus, contracts autonomously

cell junction

point of cell-to-cell contact that connects one cell to another in a tissue


cells of the cartilage


also called coagulation; complex process by which blood components form a plug to stop bleeding

collagen fiber

flexible fibrous proteins that give connective tissue tensile strength

connective tissue

type of tissue that serves to hold in place, connect, and integrate the body’s organs and systems

connective tissue membrane

connective tissue that encapsulates organs and lines movable joints

connective tissue proper

connective tissue containing a viscous matrix, fibers, and cells.

cutaneous membrane

skin; epithelial tissue made up of a stratified squamous epithelial cells that cover the outside of the body


dense connective tissue

connective tissue proper that contains many fibers that provide both elasticity and protection



outermost embryonic germ layer from which the epidermis and the nervous tissue derive

elastic cartilage

type of cartilage, with elastin as the major protein, characterized by rigid support as well as elasticity

elastic fiber

fibrous protein within connective tissue that contains a high percentage of the protein elastin that allows the fibers to stretch and return to original size

endocrine gland

groups of cells that release chemical signals into the intercellular fluid to be picked up and transported to their target organs by blood


innermost embryonic germ layer from which most of the digestive system and lower respiratory system derive


tissue that lines vessels of the lymphatic and cardiovascular system, made up of a simple squamous epithelium

epithelial membrane

epithelium attached to a layer of connective tissue

epithelial tissue

type of tissue that serves primarily as a covering or lining of body parts, protecting the body; it also functions in absorption, transport, and secretion

exocrine gland

group of epithelial cells that secrete substances through ducts that open to the skin or to internal body surfaces that lead to the exterior of the body



most abundant cell type in connective tissue, secretes protein fibers and matrix into the extracellular space


tough form of cartilage, made of thick bundles of collagen fibers embedded in chondroitin sulfate ground substance


less active form of fibroblast

fluid connective tissue

specialized cells that circulate in a watery fluid containing salts, nutrients, and dissolved proteins


gap junction

allows cytoplasmic communications to occur between cells

goblet cell

unicellular gland found in columnar epithelium that secretes mucous

ground substance

fluid or semi-fluid portion of the matrix



chemical compound released by mast cells in response to injury that causes vasodilation and endothelium permeability


microscopic study of tissue architecture, organization, and function

holocrine secretion

release of a substance caused by the rupture of a gland cell, which becomes part of the secretion

hyaline cartilage

most common type of cartilage, smooth and made of short collagen fibers embedded in a chondroitin sulfate ground substance



response of tissue to injury



(singular = lacuna) small spaces in bone or cartilage tissue that cells occupy

lamina propria

areolar connective tissue underlying a mucous membrane

loose connective tissue

(also, areolar tissue) type of connective tissue proper that shows little specialization with cells dispersed in the matrix



extracellular material which is produced by the cells embedded in it, containing ground substance and fibers

merocrine secretion

release of a substance from a gland via exocytosis

mesenchymal cell

adult stem cell from which most connective tissue cells are derived


embryonic tissue from which connective tissue cells derive


middle embryonic germ layer from which connective tissue, muscle tissue, and some epithelial tissue derive

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