chapter 6 tissue Biology 1103 Flashcards
(49 cards)
tissue
a group of similar cells that work together to form specific functions
types of tissue
epithelial, connective, muscle and nervous
distribution of structure is sign of
injury and disease
Histology
Microscopic study of tissue appearance , organization and function
epithelial Tissue
refers to the sheets of cells that covers the external surface of the body.
lining of the body , protecting the body.
function in absorption, secretion and transportation.
Eg. LARGE INTEESTINE, SKIN
connective tissue
connects the cells and organs of the body.
serves to hold in place, connect and integrate the bodys organ systems.
which also function in connections, protection and integration of all parts of the body.
BONE, TENDON
Muscle tissue
excitable, responding to stimulation and contracting to provide movement,
Eg. CARDIAC, SKELETAL and SMOOTH
Nervous tissue
excitable, allowing the progress of electrochemical signals in the form of nerve impulse that communication between different body organs.
eg. BRAIN, SPINAL CORD, NERVES
Epithelial tissue main points
lining the outside of organs and the body cavities. which form much of the glandular tissue of the body.
general structure of epithelial tissue
1, highly cellular with little or no ECM
2, exhibit polarity between the apical to basal surface.
3,Avascular ( lacking blood vessels) when there is no blood vessel that cross the basement membrane to enter the tissue and nutrient as have to be diffused or absorbed.
4, removing of the damaged or dead cells that allow our air ways and digestive tracts to rapidly replace damaged cells with new cells.
Reticular lamina
Matrix containing collagen and elastin secretion by connective tissue forming basement membrane.
classification of epitelial tissues bases on
based on shape and layers of a cell. called as SIMPLE and Stratified.
general funcrtion of epithelial tissue
—absorption, diffusion , secretion and release of mucous and specific cpds.
— first line of protection.
–act as a gatekeeper by controlling permeability and allowing selective transfer of materials.
Simple Epithelial
a shape of a cells in the single cell layer reflecting the function of each cells.
function of simple cubodial epit
secretion and absorption of ducts and tubles.
Simple squamous epithelium
Thin sclaled, flat, and horizontal
diue to its thinness of the cell is present where rapid passage of chemical compounds is observed.
Location of simple squamous epi
in alveoli, kidney tubules, lining of capillaries
blood vessels, lymphatic vessels
Lungs
function of simple squamous epithe
promote diffusion and filteration across the surface.
allow materials to pass through by diffusion and filteration
sectretes lubricating substance.
Simple cuboidal epithelium
consist of a single of layers of cube- shaped cells. located near the center of the cell
locatd in glands and in kidney tubles.
simple columnar epithelium
tall column-like cells tends to be elongated and located
have cilia on their apical surface area
the cell is found in the lining of the uterine tubes.
utreine tubes
smooth digestive truct
function of simple columnar epithelium
secretion and absorption of tissue and organs
sections of digestive system and part of female reproductive tract.
Pseudostratified columnar epithelium
appeat to be stratified BUT consit single later of irregulari shaped and differently sized colomunar cells.
location of Pseudostratified columnar epithelium
respiratory tract with some cells with cilia
function Pseudostratified columnar epithelium
secretes mucus, ciliated tisssue moves mucus
