Tissues, Part 2- Epithelial Tissue: Crash Course

simple epithelium has _____ layer(s) of cells

1

Which side of epithelial cells are on the outside (inside of organ)

Apical

Which side of epithelial cells is attached to the bottom

Basal

This membrane anchors epithelial tissue to the underlying connective tissue.

Basement

Tall and thick; absorb nutrients; produce secretions

Columnar

What is the role of epithelial tissue?

Cover and protect body surfaces and internal organs. Organizes the body

Squarish; absorb nutrients; produce secretions

Cuboidal

______ glands secrete hormones into the bloodstream or nearby cells

Endocrine

______ glands secrete substances into tubes or ducts that lead to the outside of the body

Exocrine

Forms your glands and secretes hormones and other substances.

Glandular

_____ epithelium makes up endocrine and exocrine glands

Glandular

Example of an endocrine secretion

Hormones

What does avascular mean?

No blood supply

Two types of epithelium

Proper Glandular

Covers and lines your outer and inner body

Proper epithelium

_______ epithelium has mostly one layer, but the cells are different shapes and sizes and the nuclei are in different locations giving the appearance of more than one layer

Pseudostratified

What is a single layer of flat epithelial cells called?

Simple squamous

How does the shape of squamous cells relate to its function within the blood vessels?

So oxygen and other materials can make it through.

Flat cells; fast absorption and diffusion, making thin membranes

Squamous

What are the three basic shapes of epithelial tissue?

Squamous Cuboidal Columnar

______ epithelium has multiple layers stacked on top of each other

Stratified

What is tissue that has multiple layers of cube-shaped cells called?

Stratified cuboidal tissue

Example of exocrine secretion

Sweat

How does the shape of columnar cells relate to its function within the blood vessels?

They have to make and secrete mucus.

Why does the epithelium form linings within and around your deepest layer of tissues

To protect from injury or infection