active mediated transport Correct Answers "active transport;"
Requires the expenditure of metabolic energy (ATP); moving
UP or AGAINST a concentration gradient; the major cellular
energy currency
active potential Correct Answers a rapid change in the resting
membrane potential; carries signals and conveys info from one
cell to another
active transport Correct Answers the movement of materials
through a cell membrane using energy
atrophy Correct Answers reduction (shrinking) in cell size
benign tumors Correct Answers Grow slowly
Well-defined capsule
Not invasive
Well differentiated
, Low mitotic index
Do not metastasize
carcinoma Correct Answers a malignant tumor that occurs in
epithelial tissue
caseous necrosis Correct Answers degeneration and death of
tissue with a cheese-like appearance; TB
causes of atrophy Correct Answers disuse (muscle tissue),
reduction in blood supply (arteriosclerotic changes causing
reduced blood supply to the brain), and decreased hormonal
stimulation (aging gonads, enlarged mammary)
cellular receptors Correct Answers protein molecules on the
plasma membrane, in the cytoplasm, or in the nucleus that can
recognize and bind with specific smaller molecules called
ligands
Characteristics of plasma membrane Correct Answers made up
of lipids and proteins; the basic component is a bi-layer of lipid
molecules that are responsible for the structural integrity of the
membrane
chemical injury to cells Correct Answers begins w/ a
biochemical interaction between a toxic substance and the cell's
plasma membrane (which is ultimately damaged)-->leading to
increased permeability
Coagulative necrosis Correct Answers cell proteins are altered
or denatured; caused from hypoxia caused by severe ischemia
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