Epithelial Histology

Question 1

What are the 4 types of tissues in the body?

Answer 1

Epithelial
Connective
Muscle
Nervous

Question 2

Epithelial layer is vascular or avascular?

Answer 2

Avascular; Connective tissue beneath basement membrane is vascular, no vasculation to the upper endothelium

Question 3

What are the 3 shape classifications of epithelial cells?

Answer 3

Squamous, cuboidal, columnar

Question 4

What are the 2 layer classifications of epithelial cells?

Answer 4

Simple and stratified

Question 5

Simple squamous is found where in the body and completes what function?

Answer 5

Lungs, kidney glomeruli, ear (tympanic membrane)

function - diffusion and filtration

Question 6

Simple cuboidal is found where in the body and completes what function?

Answer 6

Kidney tubules (not glomeruli), ducts and glands

function - secretion and absorption

Question 7

Simple Columnar is found where in the body and completes what function?

Answer 7

Lines of the digestive tract

Absorption, secretion of mucus, cilia

Question 8

Stratified squamous (non keratinized) is found where in the body and completes what function?

Answer 8

Esophagus, mouth, vagina

Protection from abrasion

Question 9

Stratified squamous (keratinized) is found where in the body and completes what function?

Answer 9

Thick skin

Protection from abrasion

Question 10

Statified Cuboidal is found where in the body and completes what function?

Answer 10

Sweat, salivary, and mammary glands (only two layers)

Secretion

Question 11

Statified Columnar (pseudo) is found where in the body and completes what function?

Answer 11

Tracheal lining, upper respiratory, male sperm ducts

Secretion, ciliary action

Question 12

Transitional is found where in the body and completes what function?

Answer 12

Ureters, bladder

Stretching

Question 13

What is the progress naming system of carcinomas? (3 stages)

Answer 13

1. dysplasia
2. In situ
3. Malignant