Download TISSUES OF THE BODY

Epithelial
Connective
Muscle
Nervous
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Tissue of the body responsible for protection,
absorption, filtration, and secretion.
Fit tightly together to form continuous sheets.
ALWAYS have on free (unattached) surface
called the apical surface.
Lower surface rests on the basement membrane
– connects epithelial to connective tissue below.
AVASCULAR – have no blood supply of their
own – depend on diffusion for nourishment
SIMPLE – SINGLE LAYER OF
CELLS
STRATIFIED – MULTIPLE
LAYERS OF CELLS
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SIMPLE SQUAMOUS – found on surfaces
involved in rapid diffusion – ex. Between air
sacs of lungs and blood capillaries
SIMPLE CUBOIDAL – common in glands;
found within the kidneys and ovaries
SIMPLE COLUMNAR – associated with
mucous producing layers in the digestive and
respiratory tract
PSEUDOSTRATIFIED COLUMNAR – lines the
respiratory tract – traps particles and dust
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STRATIFIED SQUAMOUS – located in areas
that receive a lot of friction such as the
esophagus and skin surface
STRATIFIED CUBOIDAL – rare within the
body – located in the mammary glands
STRATIFIED COLUMNAR – rare within the
body – located in salivary glands
TRANSITIONAL
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Forms the inner surface
of the bladder – allows
for expansion
GLANDULAR
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Forms the secretory
layers of the various
glands of the body
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Tissues of the body charged with protecting,
supporting, and binding things together.
Most connective tissue is well vascularized –
meaning it has a good blood supply.
Exceptions include the tendons and ligaments.
They are made of many different types of cells
surrounded by a NONLIVING substance
called the EXTRACELLULAR MATRIX.
This matrix is composed of various types of
fibers including elastic, collagen, and reticular
fibers.
BONE
Cells surrounded by a
very hard matrix
composed of calcium
FIBROUS CONNECTIVE
Form rope-like
structures – tendons
and ligaments
BLOOD
Contains cells
surrounded by liquid
matrix
CARTILAGE
Matrix is more
flexible than bone –
abundant in joints of
the body
ADIPOSE TISSUE
Tissue specialized to
store fat.
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Muscle tissue that
forms the muscles
attached to the
skeleton.
VOLUNTARY
Cells contain
STRIATIONS which
represent the high
protein content of
these muscle cells
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Muscle cells that
comprise the muscle
of the heart.
INVOLUNTARY
Contain STRIATIONS
Contain
INTERCALATED
DISKS which
maintain the rhythm
of the heartbeat.
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Muscles the make up
the muscular wall of
internal organs.
INVOLUNTARY
NON-STRIATED
Slow moving fibers –
control a movement
called peristalsis
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Comprised of cells called NEURONS
All neurons receive and conduct impulses.
Their cytoplasm can be drawn out into long
extensions that can be as long as 3 feet or more
allowing them to conduct impulses over a long
distance.
Supporting cells support and protect neurons –
these are called glial cells.