types of epithelium tiss lec 3

two types of epithelium

1) Simple Epithelium

2) Stratified Epithelium

4 types of simple epithelium

1) Simple squamous

2) Simple cuboidal

3) Simple columnar

4) Pseudostratified columnar

4 types of stratified epithelium

1) Stratified squamous

2) Stratified cuboidal

3) Stratified columnar

4) Transitional

thinnest epithelium

Simple squamous

one layer of epithelium

simple epithelium

flat cells that allow for diffusion of materials between cells

simple squamous epithelium

simple squamous epithelium is found in the

lungs and kidney glomerulus

cube shaped epithelium that allows for a lot of

material going from one compartment to another

also has plenty of room for organelles

Simple Cuboidal Epithelium

Simple Cuboidal Epithelium is found in the

kidney tubules

pseudo-stratified epithelium is found in the

trachea

pseudo-stratified epithelium is associated with

goblet cells

the ___________ epithelium always has cilia on their apical surfaces

__________ epithelium =more than one cell layer

stratified epithelium

if the basal cells are one shape and the apical

cells are another shape, which layer is the epithelium named after

named by the apical layer

two types of Stratified Squamous Epithelium

Keratinized Stratified Squamous Epithelium

Non-Keratinized Stratified Squamous Epithelium

Keratinized Stratified Squamous Epithelium

waterproof and found in the thick, dry areas of the skin

Non-Keratinized Stratified Squamous Epithelium

moist skin (like what is found lining the mouth and esophagus)

Stratified Cuboidal Epithelium-sweat gland

two layers that are square shaped and there is almost no diffusion between them

Stratified Cuboidal Epithelium is usually associated with what kind of glands

sweat glands

two layers, is rectangular, and allows for no diffusion between them

Stratified Columnar Epithelium-

relatively rare, providing protection along portions of the pharynx, urethra, and anus

Stratified Columnar Epithelium

What type of tissue lines the urinary

bladder?

Transitional epithelium

Transitional epithelium- Urinary Bladder

can stretch and change shape

What are the upper and lower surfaces of epithelium called?

Basal Side (faces the basement membrane)

Apical side (faces the lumen or space)

Where do epithelia get its oxygen and nutrients from?

From the blood vessels in the connective tissue beneath the basement membrane

are epithelia vascular or avascular

avascular

the only function of the basement membrane

attach epithelium to the connective tissue beneath it

the basement membrane is made of

protein fibers

What sits on top of connective tissue and is connected to it by the basement membrane?

Epithelia

three functions of epithelia

1) To separate one region from the other; e.g.

skin, stomach lining, blood vessel lining,

intestine, heart.

2) Forms exocrine glands

3) The epithelial cells are the primary type of

tissue that protects the underlying

structures

What supplies oxygen and nutrients

to the epithelium

Blood vessels in the connective tissue

sheet of cells that separate one region from another

Epithelium

5 types of Special connective tissue

1. Cartilage

   2) Bone

   3) Blood

   4) Muscle

   5) Nerves

5 types of Proper connective tissue

1. Adipose

   2) Reticular

   3) Loose

   4) Dense regular

   5) Dense irregular

2 categories of

connective tissue?

1) Fibrous (proper) connective tissue

2) Special connective tissue

2 types of tissues?

1) Epithelium

2) Connective Tissue

the presence of large numbers of microvilli on the exposed surfaces of epithelial cells indicates…

this is the area where absorption and

secretion take place

transportation specialists

probably located along portions of the digestive and urinary tracts.

cell differentiation

1. Each cell develops characteristic set of

structural features

• contributes 1 piece toward overall function of organism

2. all vital functions covered

• cells in nearby locations now able to work together

*after differentiation, cells do not change their function*

TISSUE

group of cells, usually similar, which share

a particular function.

Each organ made up of tissues