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Histology for Foundations Midterm
Terms in this set (19)
dense, fibrillar network inside the nucleus of most cells. It is composed of intermediate filaments and membrane associated proteins. Besides providing mechanical support, the nuclear lamina regulates important cellular events such as DNA replication and cell division
Found inside the nucleus and produces ribosomes
A group of several ribosomes attached to, and translating, the same messenger RNA molecule.
Rough Endoplasmic Reticulum
An endomembrane system covered with ribosomes where many proteins for transport are assembled.
smooth endoplasmic reticulum
makes lipids, fatty acids, detox
cell organelle filled with enzymes needed to break down certain materials in the cell
Contain oxidase enzymes that detoxify alcohol, hydrogen peroxide, and other harmful chemicals
A membrane-bound vacuole, derived from within the cell, that contains intracellular material
Vesicle formed at the plasma membrane to allow the absorption of large molecules.
A vacuole that holds the matter which a cell engulfs.
Membranes of neighboring cells are pressed together, preventing leakage of extracellular fluid
Intermediate junctions (adherence junctions)
forms a space or bubble controlled by actin microfilaments forming firm connections between cells
Anchoring junctions that prevents cells subjected to mechanical stress from being pulled apart; button like thickenings of adjacent plasma membranes connected by fine protein filaments
attach cells to basement membrane
(communicating junctions) provide cytoplasmic channels between adjacent cells
basement membrane (basal lamina)
Complex structure produced by the basal surface of the epithelium in the underlying connective tissue
a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
Fingerlike extensions of plasma membrane of apical epithelial cells, increase surface area, aid in absorbtion, exist on every moist epithelia, but most dense in small intestine and kidney
Hairlike projections that extend from the plasma membrane and are used for locomotion
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