Epithelial Tissue

Question 1

Simple squamous structure, location, and function

Answer 1

Structure: single layer of thin, flat cells
Location: air sacs of the lungs
Functions: diffusion and filtration

Question 2

Simple cuboidal structure, location, and function

Answer 2

Structure: single layer of cube-shaped cells; some types have microvilli
(kidney tubules) or cilia (terminal bronchioles of the lungs)
Locations: Kidney tubules
Functions: Secretion and absorption

Question 3

Simple columnar structure, location, and function (what type of cells do they contain)?

Answer 3

Structure: single layer of tall, narrow cells, some have cilia (bronchioles of lungs) or microvilli (intestine)
Location: digestive tract
Functions: Movement, secretion, and absorption
Contain goblet cells: produce lubricating mucus

Question 4

Pseudostratified columnar structure, location, and function (what type of cells do they contain)?

Answer 4

Structure: all cells reach basement membrane, appears stratified because nuclei are at various levels
almost always ciliated and associated with goblet cells
Locations: respiratory tract
Functions: secretion and movement

Question 5

stratified squamous structure, location, and function

Answer 5

Structure: multiple layers of cells that are cuboidal or columnar close to the
basement layer and progressively flatten toward the surface
In moist, surface cells retain a nucleus and cytoplasm
In keratinized, surface cells are dead
Locations: mouth (moist) skin (keratinized)
Functions: protection

Question 6

stratified cuboidal structure, location, and function

Answer 6

Structure: multiple layers of somewhat cube-shaped cells
Locations: Salivary gland ducts
Functions: secretion, absorption, and protection

Question 7

What is the most rare types of epithelial tissue?

Answer 7

Stratified Cuboidal and Stratified Columnar

Question 8

stratified columnar structure, location, and function

Answer 8

Structure: multiple layers of cells with tall thin cells resting on layers of more cuboidal cells
Locations: salivary glands
Function: protection and secretion

Question 9

transitional epithelium structure, location, and function

Answer 9

Structure: modified, stratified squamous epithelium
Location: lining of urinary bladder
Functions: stretches

Question 10

What is a gland?

Answer 10

Consists of one or more cells that make and secrete a particular product

Question 11

What are the two types of glands formed by epithelium?

Answer 11

Endocrine and Exocrine

Question 12

Describe endocrine glands and give an example of a secretion

Answer 12

Have no connection to
the surface (ductless)
Secretions: ALL hormones (diffuse directly into the
blood vessels - insulin in the pancreas)

Question 13

Describe exocrine glands and give an example of a secretion

Answer 13

Has ducts
Secretions empty through duct to the epithelial surface (sweat)