Tissues Flashcards
Four basic types of tissue
1.) Epithelial
2.) Connective
3.) Muscular
4.) Nervous
What are the four structural characteristics of epithelial tissue?
1.) Cuboidal
2.) Squamous
3.) Columnar
4.) Pseudostratified
what is simple mean in epithelial tissue
one layer
what does stratified in epithelial tissue
2 or more layers
What is the main function of cuboidal and columnar tissue?
secretion and absorption
propel mucus or reproductive cells
what is the function of squamous tissue?
Diffusion and filtration
the main characteristics of epithelial tissue (6)
cellularity
cell junctions
polarity
supported by CT
avascular but innervated
regeneration
what is cellularity
composed almost entirely of cells
what are specialized cell junctions
adjacent epithelial cells are directly joined at many points by special cell junctions
what is polarity
the epithelial tissue has a free apical surface and attached basal surface that differ in structure and functions
what is avasucular
no blood flow (no veins)
what is innervated
nerves are within
what is exocrine glands do
they carry products to the surface
what do endocrine glands do
produce hormones that are released into the extracellular space
what are the 4 main classes of CT
1.) connective tissue proper
2.) cartilage
3.) bone tissue
4.) blood
what cells are in connective tissue proper
fibrocytes and fibriblasts
what cells are in cartilage
chondrocytes and chondroblasts
what cells are in bone tissue
osteocytes and osteoblasts
what cells are in the blood
red and white blood cells in a fluid matrix
what are the two types of CT proper
1.) loose
2.) dense
what types are loose CT
1.) Areolar
2.) Adipose
3.) Reticular
what are the types of dense CT
1.) Irregular
2.) Regular
3.) Elastic
what is the function of areolar CT
support and bind to other tissues
hold body fluids
defended body against infection
storing nutrients as fat
what are the functions of adipose CT?
storing nutrients as fat
surrounds and protects organ
