Chapter 3 Flashcards
Functions of epithelia tissue
Provide physical protection,
control permeability, provide sensation,
produce specialized secretions
Epithelia specializations
- Lateral cell surfaces
- Maintain close cell-to-cell contact and form covering sheets
- Epithelium structurally and functionally polarized to increase efficiency of absorption and transport
Simple squamous epithelium
Location:heart, blood vessels
Function: reduces friction & absorbs and secrets materials
Stratified squamous epithelium
Location: skin surface, lining of mouth, esophagus anis and virgins
Function: protect against abrasion and chemicals
Simple cuboidal epithelium
Location: thyroid glands, ducts kidney
Function:secretion, absorption protection
Stratified cuboidal epithelium
Location: Ducts of sweat glands (rare)
Function: secretion, absorption, protection
Simple columnar epithelium
Location:lining of stomach intestines, uterine tubes and collection of ducts of kidneys
Function: psa
Stratified columnar epithelium
Location: pharynx, epiglottis, mammary glands, salivary glands anus
Function: ps
Pseudo stratified ciliates columnar epithelium
Location:lining of nasal cavity, broachi and portions of male reproductive organs
Function: PS
Transitional epithelium
Location: urinary bladder, pelvis, ureters
Function: permitted expansion and recoil
Collagen fibers
It provides strength and cushioning to many different areas of the body, including the skin. More specifically, collagen is found in our various types of connective tissue such as cartilage, tendons, bones, and ligaments
Elastic fibers
found in extracellular matrix of connective tissue and produced by fibroblasts and smooth muscle cells in arteries. These fibers can stretch up to 1.5 times their length, and snap back to their original length when relaxed.
Reticular fiber
connective tissue composed of type III collagen secreted by reticular cells. Reticular fibers crosslink to form a fine meshwork
White blood cell apart of the immune system
Mast cell
White blood cells that eat anything that’s not healthy to the body ex: cancer cells
Macrophages