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Exam 2 uwf pritchard
lecture
64
Physiology
Undergraduate 3
03/24/2011

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Term
Four tissue types
Definition
Epithelial
Connective
Muscle
Nervous
Term
epithelial tissue
Definition
function: covering: outside inside covering, lining and glandular
Term
Connective tissue
Definition
function: Support
Term
Muscular tissue
Definition
function: Movement
Term
Nervous tissue
Definition
function: control
Term
5 epithelial functions
Definition
protection
Absorption
Filtration/ excersion
Secretion
Sensory Reception
Term
Epithelial special characteristics cellularity
Definition
closed packed cells
little extracellular material
Term
Epithelial special characteristics specialized contacts
Definition
tight junctions(cant get between)
desmosomes (protein adheres cells together)
Term
Shows polarity (epithelial)
Definition
Apical Surface (free edge microvilli or cilia)
Basal surface (sits on basement membrane: non cellular adhesive: filter and support made by epithelial)
Term
Supported by connective tissue
Definition
basement membrane (basal lamina and reticular lamina)
resist tearing and stretching
Term
innervated, avascular
Definition
nerve inside the tissue, no blood
nourished by diffusion
Term
Regenerative
Definition
constantly sloughed
Term
epithelial tissue classified by
Definition
number of layers
shape of cells
Term
epithelial number of layers
Definition
simple- one layer
stratified many layers
Term
epithelial shape of cells
Definition
squamous- flat
cuboidal- square box
columnar- rectangular box
Term
Glandular epithelium
Definition
gland
endocrine
exocrine
Term
tansitional epithelium
Definition
cells look same from top to bottom change shape together
Term
gland
Definition
one or more cells that make and secrete a product
Term
endocrine
Definition
ductless: and secrete into blood
Term
exocrine
Definition
secretes through body
Term
glandular epithelium two types
Definition
Unicellular exocrine glands
multicellular exocrine glands
Term
Unicellular exocrine glands
Definition
single cell
no duct
goblet cells secrete mucus
Term
Multicellular exocrine glands
Definition
composed of a duct and a secretory unit
Term
Multicellular glands 2 characteristics
Definition
branched or unbranched
the shape of the secretory portion of the gland
Term
Merocrine Glands (salivary)
Definition
secrete product by exocytosis
Term
Holocrine Glands (Sebaceous gland)
Definition
cell bursts to release product
Term
Simple Squamous Epithelium
Definition
Location: Lines heart, blood vessels, lymphatic vessels, air sacs of lungs, glomerular (Bowman's) capsule of kidneys, and inner surface of the tympanic membrane (eardrum); forms epithelial layer of serous membranes, such as the peritoneum, pericardium, and pleura.


Function: Filtration, diffusion, osmosis, and secretion in serous membranes
Term
Simple Cuboidal
Definition
Location: Covers surface of ovary, lines anterior surface of capsule of the lens of the eye, forms the pigmented epithelium at the posterior surface of the eye, lines kidney tubules and smaller ducts of many glands, and makes up the secreting portion of some glands such as the thyroid gland and the ducts of some glands such as the pancreas.


Function: Secretion and absorption
Term
Connective Tissue
Definition
Most common tissue in the body
Function: transportation
Term
Connective tissue common origin
Definition
mesenchyme
Term
Varying degree of vascularity conective
Definition
cartilage-avascular
bone-highly vascular
Term
Connective common characteristics
Definition
common origin
varying degrees of vascularity
extracellular matrix
Term
Connective Structural Elements
Definition
Ground Substance
Fibers
Cells
Term
Ground Substance (connective)
Definition
Amorphous Material between cells
interstitial fluid
cell adhesion protein (laminine, fibronectin)
proteoglycans (keratin and chondoitin)
Term
Fibers (connective)
Definition
provide support in connective tissue
collagen
most abundant
tough tensile strength
Term
two types of fibers
Definition
reticular and elastic fibers
Term
elastic fibers
Definition
allow for stretch
Term
reticular fibers
Definition
support soft tissue
Term
Cells CT type
Definition
CT proper
cartilage
bone
blood
Term
Connective tissue proper
Definition
fibroblasts
Term
Cartilage
Definition
chondroblasts
Term
Bone
Definition
Osteoblasts
Term
blood
Definition
hemocytoblasts
Term
Cells ct
Definition
each ct has a basic cell type
blasts synthesize matrix-mature
mesenchyme mother of blasts
Term
Epithelial Membrane
Definition
continous multicellular sheet
composed of 2 primary tissues
epithelial tissue
connective tissue
simple organ
Term
Types of epithelial membrane
Definition
cutaneous membrane
mucous
serous
synovial
Term
Cutaneous Membrane
Definition
stratified squamous epithelial
dense irregular connective tissue
exposed to air
dry
skin/ protection from dehydration
Term
Mucous Membrane
Definition
lines open body cavity
secrete mucous
some adapted for absorption and secretion
epithelial sheet over loose connective tissue
may rest on smooth muscle
Term
serous membrane
Definition
line closed body cavities
simple squamous epithel
areolar connective tissue
secrete serous fluid/ lubricant
pluera pericardium
Term
Nervous Tissue
Definition
regulates and controle
cell types
Term
Nervous Tissue
Definition
regulates and controle
cell types
Term
Nervous cell types
Definition
Nuerons
generate and conduct impulses
glial cells
support insulate and protect
Term
Muscle Tissue
Definition
highly cellular
well inervated and vascularized
movement
Term
types of muscle tissue
Definition
skeletal
cardiac
smooth
Term
Tissue repair
Definition
Inflamation
response to damaged tissue
body resources called to area
Term
body resources called for tissue repair
Definition
control
minimize damage
clean and prep for repair
Term
Regeneration (tissue repair)
Definition
replace with same tissue
new tissue functional
Term
Fibrosis
Definition
area replaced with fibrous connective tissue
scar tissue- non functional
Term
regeneration/ fibrosis
Definition
surface epithelium regenerates
scab falls off-epithelium thickens
underlying collagen fibers mature
scar tissue mature
scar becomes pale as blood supply diminsher to collagen
Term
scar tissue non functional (regeneration)
Definition
repair site strong and flexible
does not function same as replaced tissue
Term
Adhesion
Definition
internal scar tissue
attaches organs to eachother
organs may NOT function well
Term
Factors influencing repair
Definition
tissue type
type of injury, treatment, care, nutrition
bloody supply
age of individual
state of health
Term
tissue changes with aging
Definition
epithelia thin
collagen declines
circulation and nutrition decline
Term
tissue definition
Definition
A tissue is a group of cells that usually have a common embryonic origin and function together to carry out specialized activities.
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