ANA101- Body Tissues: Epithelial

________________ are groups of cells with similar structure and functions

tissues

What are the 4 primary types of tissues?

1. ____________________

2. ____________________

3. ____________________

4. ____________________

1. Epithelial tissue

2. Connective tissue

3. Muscle tissue

4. Nervous tissue

What are the locations of Epithelial tissue?

1. _________________________

2. _________________________

3. _________________________

1. Body coverings

2. Body linings

3. Glandular tissue- exocrine, endocrine

What are the functions of Epithelial tissue?

1. ____________________

2. ____________________

3. ____________________

4. _____________________

1. Protection

2. Absorption

3. Filtration

4. Secretion

What are the hallmarks of epithelial tissues?

1. ________________________

2. ________________________

3. ________________________

4. ________________________

1. Cellularity

2. Often form sheets with a free surface the apical surface, and an anchored surface, the basement membrane

3. Avascular (NO BLOOD SUPPLY)

4. Regenerate easily if well-nourished

What are the classifications of epithelia according to number of layers?

• __________________

• __________________

• Simple

• Stratified

What are the classifications of epithelia according to shape of cells?

• ____________

• ____________

• ____________

• Squamous

• Cuboidal

• Columnar

_____________________ functions in absorption, secretion, and filtration. These are very thin thus making them not suitable for protection

Simple epithelia

Simple Epithelia functions:

1. _________________

2. _________________

3. _________________

1. Absorption

2. Secretion

3. Filtration

The _____________________ is a single layer of flat cells. It usually forms membranes

Simple squamous epithelium

What are the locations of simple squamous epithelium?

• __________________

• __________________

• __________________

• lines air sacs of the lungs

• forms walls of capillaries

• forms serous membranes that line and cover organs in ventral cavity

The ____________________ is composed of a single layer of cube-like cells.

Simple cuboidal epithelium

What are the locations of simple cuboidal epithelium?

• __________________________

• __________________________

• __________________________

• common in glands and their ducts

• forms walls of kidney tubules

• covers the surface of ovaries

What are the functions of simple cuboidal epithelium?

• _________________________

• _________________________

• absorption

• secretion

_______________________ is composed of a single layer of tall cells

simple columnar epithelium

__________________ secrete mucus

goblet cells

What are the locations of simple columnar epithelium?

• _______________________

• _______________________

• lining of the digestive tract from stomach to anus

• Mucous membranes line body cavities opening to the exterior

What are the functions of simple columnar epithelium?

• _______________________

• _______________________

• absorption

• secretion

The ___________________________ is where all cells rest on a basement membrane. It is only a single layer, but some cells are shorter than others giving a false impression of stratification

Pseudostratified columnar epithelium

______________________ is the location of the pseudostratified columnar epithelium

respiratory tract

What are the functions of pseudostratified columnar epithelium?

• _____________________

• _____________________

• absorption

• secretion

____________________ is the most common stratified epithelium. It is named for cells present at the free surface, which are squamous.

Stratified squamous epithelium

_______________________ functions as a protective covering where friction is common

Stratified squamous epithelium

The locations of stratified squamous epithelium can be found in the lining of the:

• ______________________

• ______________________

• ______________________

• Skin (outer portion)

• Mouth

• Esophagus

The ______________________ is composed of modified stratified squamous epithelium. Its shape of cells depends upon the amount of stretching. It functions in stretching and the ability to return to normal shape

Transitional epithelium

_____________________________ is the location of the transitional epithelium

lining of urinary system organs

_________________________is where one or more cells responsible for secreting a particular product. Secretions contain ______________________ in an aqueous fluid. Secretion is an ___________ process

Glandular Epithelia
protein molecules
active

What are the two major gland types that develop from epithelial sheets?

1. _____________________

2. _____________________

Endocrine glands
Exocrine glands

___________________ is ductless; secretions diffuse into blood vessels. Examples include thyroid, adrenals, and pituitary

Endocrine glands

__________________ are where secretions empty ducts to the epithelial surface. This include ___________ and ___________ glands, _________ and ___________

exocrine glands
sweat
oil
liver
pancreas