Exercise 5 Flashcards
(29 cards)
What are the 4 major categories of tissues?
Epithelial, connective, muscular, and nervous
What is the study of tissue called?
Histology
What does epithelial tissue cover?
Covers all body surfaces, inside and out
What is the basal lamina made out of?
Glycoproteins and protein fibers
What is the purpose of the basal lamina?
Connects the underside of epithelium to connective tissue
Epithelia lack ________ __________.
Blood vessels
Epithelial cells are constantly exposed to conditions of _______ & ________.
Abrasion and injury
Epithelial tissue is ________ packed.
Tightly
Name 5 functions of epithelial tissue:
Protection, secretion, absorption, filtration, sensory reception.
Epithelia are classified based on 2 structural criteria:
Shape of cells.
Number of cell layers.
What is the difference between simple and stratified Epithelia?
Simple - one cell layer.
Stratified - multiple cell layers.
What is squamous epithelium?
Flat, irregularly shaped cells.
What is Cuboidal epithelium?
Contains cube-shaped cells (equal height and width).
What is columnar epithelium?
Elongated cells (height much greater than width).
Where is simple squamous found?
- Inner lining of blood vessels.
2. Lining of body cavities.
Where is simple cuboidal found?
Renal tubules (kidneys), secretory portion of glands, and liver cells.
What type of cells are found in the inner lining of much of the digestive tract?
Simple columnar
What type of Epithelia tissue is found on the inner lining of the urinary tract?
Transitional
What type of Epithelia is found on inner lining of trachea and large airways in lung?
Pseudostratified columnar
Where is stratified squamous found?
- Epidermis of skin
- Inner lining of esophagus.
- Inner lining of vaginal canal.
Stratified cuboidal is found on _______.
Ducts of sweat, mammary, and salivary glands
Where is stratified columnar found?
Small portion of male urethra, some large ducts of glands.
What is endothelium?
Simple squamous that line blood vessels
What is mesothelium?
Simple squamous that lines body cavities.
