Chp 3 Flashcards
_______tissue covers body surfaces; lines hollow organs, body cavities,
and ducts; it also forms glands.
Epithelial
_______ tissue protects and supports the body and its organs; binds
organs together; stores energy reserves as fat; provides immunity.
Connective
________ tissue generates physical force for movement and thereby
generates body heat.
Muscular
tissue detects changes in a variety of conditions and responds
by initiating and transmitting nerve impulses (signals) that help control and coordinate body activities.
Nervous
There are ____major types of cell junctions:
Five
______form tight seals between cells such as the epithelial cells that comprise the inner lining of the Stomach intestines and urinary bladder, these junctions prevent the passage of substances between cells
Tight junctions
_____ strongly fasten cells to each other; they help epithelial surfaces resist separation
Adherens junctions
______ strongly fasten cells to each other; they prevent epidermal cells from separating under tension and Cardi ac muscle cells from pulling apart during contraction
Desmosomes
______ strongly anchor cells to an underlying basement membrane
Hemidesmosomes
______ formed by minute, fluid-filled tunnels that permit passage of electrical signals or ChemicalS (ie., ions and small molecules) from one cell to a neighboring cell, located in some part of the nervous system, in heart muscle, and in the gastrointestinal tract
Gap junctions
______tissue always forms surface layers.
Epithelial
_________ has a nerve supply
high capacity for cell division in order to replace cells lost due to wear and tear and injury
Epithelial tissue
Divided into two major types:
A. _______epithelium
B. _______ epithelium
Grandular, surface
____________ cells are arranged as a continuous sheet of one or more layers to form outer coverings and inner linings of the organs, cavities and ducts of the body.
Surface epithelium
Simple (unilaminar) epithelium
Single layer of cells