Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
41 Cards in this Set
- Front
- Back
The science of the microscopic structure of tissue.
|
Histology
|
|
What are the four types of tissue?
|
Epethilial
Connective Muscle Nervous |
|
Epethelial tissue
-where can it be found? -organization? -example? |
epethilial tissue covers and lines all organs and tubes.
Well-organized Glands |
|
Connective tissue
-found whrere? -organization? |
EVERYWHERE. it acts as the glue of the body (holds us together)
NOT well-organized |
|
Muscle
-does what |
Contractile tissue- allows for movement.
|
|
nervous tissue
does what? |
conduct electrical impulses
|
|
Epithelial cells are so well-organized and very pact that is why they are found where?
|
At boundaries they prevent leaks.
|
|
What are the two basic types of EPETHELIAL TISSUE?
|
Membranous
glandular |
|
What are membranous epithelial tissue used for?
|
they line all cavities opened or closed to the outside
|
|
what are glandular epithelial tissue used for?
|
they form secretory portions. (make and secrete a product)
|
|
What are the six features that distinguish epithelial tissue?
|
1.) Cellularity- made up almost exclusively of cells.
2.) Specialized contacts- between cells to make TIGHT junctions 3.) Polarity- have both a base (basal) and an opening to the environment (apical) 4.) Supported by connective tissue. 5.) Avascular but innervated 6.) Easy regneration |
|
Classification of Epithelial tissue
Simple vs. Stratified? |
Simple- one cell layer thick (allows for easy diffusion)
Stratified- two or more layers thick (allows for more protection. |
|
Simple epithelial tissue are further categorized by shape.
what are the three shapes? |
squamous
cuboidal columnar |
|
Simple squamous epithelial tissue
-shape? -function? -found where? -example? |
flat cells
to absorb, diffuse, filter, TRANSPORT THROUGH In walls of blood vessels (endothelium), lining of cavities (mesothelium) Pulmonary alveoli |
|
Simple cuboidal epithelial tissue
-shape? -function? -found where? -example? |
cube shaped
To transport Found more in cellular machinery and within ducts whose function is secretory and/or excretory Kidneys |
|
Simple columnar epithelial tissue
-shape? -function? -found where? -example? |
column shapeed
Absorption mostly in the digestive system (increases Surface area) GOBLET CELLS (make mucous) |
|
Simple ciliated columnar epithelial tissue
-shape? -function? -found where? -example? |
column shaped with cilia
cilia function to transport material across tubes. found in the female reproductive tract. |
|
Simple pseudostratified ciliated columnar epithelial tissue
-shape? -function? -found where? -example? |
Appear to be multiple cell layer thick but its just that the nucleus is not at the same level as the cell.
removes dust and bacteria trapped in tubes. Found in the trachea and bronchial tubes. |
|
Stratified squamous epithelial tissue
-shape? -function? -found where? -example? |
flat tissue many cell layers thick
PROTECTION- best protective tissue. Found in all epithelium (KERATINIZED). |
|
Stratified Cuboidal epithelial tissue
-shape? -function? -found where? -example? |
Cube shaped... only about 2 cell layers thick.
Protection lines large ducts including sweat glands, salivary glands, pancreas |
|
Stratified columnar epithelial tissue
-shape? -function? -found where? -example? |
Column-shaped
Found in large ducts (such as male urethra) |
|
Stratified transitory epithelial tissue
-shape? -function? -found where? -example? |
FOUND ONLY in the urinary bladder.
allows bladder to change shape |
|
Combinations of ducts
-tubular -alveolar -simple -compound -branched -unbranched |
.
|
|
Connective tissue
functions: |
the most abundant tissue
-houses WBC and phagocytic cells -mantains fluid levels -stores fats |
|
Connective tissue proper
-properties -how many kinds? -composite fibers? |
loose, flexible
5 Collagen- very tough Fibroblasts- make all other fibers reticular fibers- smaller not as tough elastin- allows elasticity |
|
Loose connective tissue has 5 subtypes what are they?
|
Areolar
Adipose Reticular Dense irregular Dense regular |
|
loose connective: Areolar
found where: fibers: function: example: |
MOST ABUNDANT Connective tissue (which is the most abundant tissue)
wraps around organs lots of collagen surrounds all blood capilaries holds skin underneath muscle |
|
Loose connective adipose
made up of: found where: function: |
fat cells mixed with tissue
store energy and provide protection concentrated around kidneys, heart and joints. |
|
Reticular connective tissue
made up of: purpose: example: |
alot of reticular fibers
to protect body and form spleen and phagocytes spleen |
|
Dense IRregular tissue
made up of: function: example: |
lots of collagen fibers
to protect bones from tensile strength |
|
Dense regular connective
Arranged: purpose: examples: |
parallel to the direction of force
resists tensile pressure ligaments and tendons |
|
you can strain what
you can sprain what |
tendons and muscles
ligament |
|
Cartellage is the 3rd of 5 tissue classes.
-also called -vascular? -innervated? - maneuvers what? |
chondrocytes
no; no water |
|
what are the three classes of cartellage?
|
Hyaline
Elastic Fibrocartillage |
|
Hyaline Cartillage
-found where? - tough or weak? - example? |
MOST ABUNDANT CARTILLAGE
-covers ends of long bonds -tough but allows bending -found in SYNOVIAL JOINTS |
|
Elastic cartilage
-found where? -tough or movable? |
ears and epiglottis
very moveable |
|
Fibrocartilage
-tough or movable -found where? -purpose? |
Very tough
areas of high stress (intervertebral disks, knee joints, pubic bone) durable and shock absorbant |
|
Blood
-also called what? -made up of what 3 substances -function |
a class of connective tissue
Plasma RBC WBC to transport minerals, gases, wastes, and nutrients. |
|
Muscle tissue has three classes what are they?
|
-smooth
- cardiac - skeletal |
|
Nervous tissue can be broken into two clases what are they?
|
Neuons
Glial cells |
|
What is so unique about nervous tissue?
|
they can propogate electrical signals.
|