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Epithelial Tissue
Question | Answer |
---|---|
where is simple squamous located? | wherever rapid diffusion or filtration take place. |
Where is stratified squamous located? | surface of skin, lining of mouth & throat |
Where is simple cuboidal located? | glands, ducts, portions of kidney tubules |
Where is stratified cuboidal located? | lining of some passage ways that carry fluids (ducts) - RARE |
Where is simple columnar located? | Throughout body's organ systems (digestive & reproductive), nasal passage, buccal cavity, and eyes. |
Where is stratified columnar located? | salivary glands (cell lining protects the salivary duct) & vans deferens (protects and aids in secretion of glands intestinal lining |
Where is pseudostratified ciliated columnar located? | mainly in tracheal and bronchial regions & fallopian tubes |
Where is transitional located? | lining of urinary tract & ureter |
What is the function of simple squamous? | reduces friction, controls vessel permeability, & performs absorption and secretion |
What is the function of stratified squamous? | provides physical protection against abrasion |
What is the function of simple cuboidal? | limited protection, secretion and/or absorption |
What is the function of stratified cuboidal? | protection |
What is the funtion of simple columnar? | main function to protect against bacteria and surface damage, sensory input, & absorbing and transporting nutrients |
What is the function of stratified columnar? | secretion & protection |
What is the function of Pseudostratified Ciliated Columnar? | secretes mucous to form a mucosal layer & propels mucous away from the lungs to protect from causing protection |
What is the function of transitional? | elasticity; stretch & retract |
Characteristic of ET - Avascular | No blood vessels, obtains 02 nutrients from diffusion |
Structure of Basement Membrane - Basal Lamina | layer closest to the cells, rapid diffusion |
Structure of Basement Membrane - Reticular Lamina | layer furthest from cells, anchorage |
CELLS - nucleus | info & coordination, position dependent on tissue type |
CELLS - Interfacial Canal | space between cells, chem communication, diffusion |
CELLS - Microvilli or Cilia | finger like projections that increase surface area for absorption or tiny hairs for movement |
FUNCTIONS - Protections/Lining | cavities, organs |
FUNCTIONS - Regulation | cell communication, homeostasis |
FUNCTIONS - Permeability | diffusion of waster & nutrients, absorption and excretion |
CLASSIFICATION - Cell Shape (squamous) | round |
CLASSIFICATION - Cell Shape (cuboidal) | cube-like, rounded edges |
CLASSIFICATION - Cell Shape (columnar) | tall, vertical rectangles |
CLASSIFICATION - # of cell layers | simple (one) stratified (more than one) |