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the removal of a sample of living tissue for microscopic examination to help diagnose disease
abnormal increase in the number of normal cells in a tissue or organ increasing its size
pathological type of cell death caused by disease, injury, or lack of blood that results in adjacent cells swelling, bursting, and spilling thier contents causing imflammatory response
compares the risk of developing cancer between people with a common characteristic or exposure
a group of similar cells and their intercellular substance joined together to perform a specific function
the tissue that forms the innermost and outermost surfaces of body structures and forms glands
thin, extracellular layer between epithelium and connective tissue consisting of a basal lamina and reticular lamina
most abundant of four basic tissues in body; basic functions of binding and supporting; few cells in a mix of ground substance and fibers
large flat cell that secretes most of teh extracellular matrix of areolar and dense connective tissue, a cell from which connective tissue develops
loose connective tissue
loosely intertwined fibers between cells; types: areolar, adipose, reticular
dense connective tissue
more numerous and thicker, denser fibers with fewer cells; types: dense regular, dense irregular, elastic
connective tissue embedded in dense network of collagen and elastic fibers and extracellular mix of chondroitin sulfate
organ specialized for ontraction; made of striated muscle fibers; supported by connective tissue attached to bones or tendons
the extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscles or glands
the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body
pigmented cell located between/beneath cells of the deepest layer of epidermis that synthesizes melanin
epidermal dendritic cell that functions as an antigen presenting cell during an immune response
type of cell in the epidermis of hairless skin that makes contact with tactile disc; functions in touch
1/5 of total layer of dermis; made of dermal papillae; areolar connective tissue with elastic fibers
attached to subcutaneous layer; made of dense irregular with fibroblasts, bundles of collagen, soem coarse elastic fibers
fingerprints; on palms, fingers, feet, toes; ridges and grooves pulled in not pushed out
structure composed of epithelium and surrounding the root of hair; where hair develops
clot becomes scap and epithelial cells migrate along fibrin threads and make scar tissue and blood vessels begin to grow
extensive growth of epithelial cells beneath scab; blood vessels continue to grow; collagen fibers form
a vertical partition composed of bone and cartilage; covered with a mucous membrane separating the nasal cavity into left/right
u shaped; axial skeleton; unique because it is suspended by muscles and ligaments from styloid processes
irregular transverse thickening of sarcolemma that contains demosomes which hold cardiac muscle cells together, and gap junctions, aid in action potentials
small cylindrical indentations of sarcolemma of striated muscle cells that conduct muscle action potentials towards inside of cell
complex of three units in a muscle fiber made of T tubules and sarcoplasmic reticulum terminal cisterns on both sides of it
protein filament may provide strutural reinforcement hold organelles in place, gives shape to cells
terminal branch of an axon where synaptic vesicles undergo exocytosis to release neurotransmitter molecules
narrow gap at chemical synapse separates axon terminals, across which neurotransmitter diffuses to affect post synaptic cell
motor end plate
region of sarcolemma of muscle fiber that ends in acetylcholine receptors which bind ACh released by synaptic and bulbs of somatic motor neurons
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