Chapter 4 Flashcards
groups of similar cells that have a common function. The four basic tissue types are epithelial, muscle, connective, and nervous tissue.
tissues
covers the body surface and lines body cavities.
epithelium
supports and protects body organs.
connective tissues
is excitable, responding to stimulation and contracting to provide movement, and occurs as three major types
muscle
provides a means of rapid internal communication by transmitting electrical impulses.
nervous tissues
form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands.
epithelial
- Close space between cells
- Located among cells that form linings
tight junctions
- Form “spot welds” between cells
- Located among outer skin cells
desmosomes
- Tubular channels between cells
- Located in cardiac muscle cells
gap junctions
a specialization of the plasma
membrane of an epithelial cell that is
similar to half a desmosome and
serves to connect the basal surface of
the cell to the basement membrane
hemidesmosome
- Single layer of flat cells
- Substances pass easily through
- Line air sacs
- Line blood vessels
- Line lymphatic vessels
simple squamous
- important functions of the are secretion and absorption.
- found in the small collecting ducts of the kidneys, pancreas, and salivary glands.
simple cuboidal
which epithelium is best suited for diffusion or filtration
simple squamous epithelium
which epithelium is specialized for water reabsorption and ion movement
simple cuboidal epithelium
- Single layer of elongated cells
- Nuclei usually near the basement
- Membrane at same level
- Sometimes possess cilia
- Sometimes possess microvilli
- Often have goblet cells
- Line uterus, stomach, intestines
simple columnar epithelium