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Reading assignment:
Chapter 5
(Thibodeau & Patton
Anatomy
& Physiology) |
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ACT
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Interactive
activity |
GA |
Gray's Anatomy |
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Animation |
pp |
PowerPoint
slide |
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FIG
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Figure |
term |
Define,
pronounce |
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Online preview:
Tissues
(Previews are found at
WebCT)
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We're
covering ONLY the membranes of the body for now
--and that topic only in the Preview, not in class.
Specific tissue types will be covered in the lab course.
You will not be tested on the tissue types
(summarized in Tables 5-1,
5-4, 5-6, 5-7)
now in the
lecture course,
but you will need to learn them in order to understand
later topics. 
If
you WANT to review them now see Tissues,
Organs, & Systems.
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Membranes
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Epithelial membranes
pp
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Epithelial membranes
have two layers: epithelial and connective (joined by a gluelike
basement membrane) |
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Serous membranes
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Line cavities that are not open to the external environment
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Examples:
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peritoneum
(lines abdominal cavity/covers abdominal organs)
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pleura
(lines pleural cavity/covers lung)
GA |
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Usually two
layers, formed when one layer folds back on itself to form
double layer
pp
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Visceral
layer: the layer against the internal organs (organs=viscera) |
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Parietal
layer: the layer against the inside wall of the cavity |
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There is a
potential space between the parietal and visceral layers
with a small amount of serous fluid
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Serous
fluid is watery fluid that lubricates and holds layers
together (cohesive) |
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A
potential space is like my pocket: there's room for a
lot of money but it's usually empty, with both layers
of material touching one another and no significant
space is between them |
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Serous membranes ordinarily have
two layers:
visceral
parietal
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Epithelial membranes (cont'd)
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Mucous membranes
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Line cavities that are open to the external environment
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Examples:
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Lining of
mouth, digestive tract, reproductive tract, urinary
tract, respiratory tract |
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Single layer |
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Mucus
(noun) refer to a fluid; mucous (adjective) describes
something that has mucus on it or is otherwise associated with
mucus pp |
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Mucus is a watery
secretion that varies in consistency, depending on its
function
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Sometimes
watery, as mucus produced by the nose's lining in an
allergy |
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Sometimes
sticky, as mucus that normally lines the nose (snot) |
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Sometimes
lubricating, as mucus in digestive tract or vagina |
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Sometimes
protective, as mucus that protects the stomach's lining
from acid and enzymes |
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Cutaneous membrane
(another name for "skin")
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Cover surfaces exposed directly to the external environment |
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Produces several
fluids: sweat, oil, etc. |
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Connective tissue membranes
pp
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Connective tissue
membranes have more than one layer, all connective tissue types |
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Synovial membranes
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Line joint cavities |
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Movable joints are
therefore called synovial joints |
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Synovial fluid
lubricates and cushions joints
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This Learning Outline may be
updated or improved at any time.
Check back frequently or use the
link to the right to inform you of changes. |
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© 1988-April, 2007 Kevin
Patton
ALL rights
reserved This page updated
04/01/07.
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