Epithelium

High school (ages 12+)
Human Body

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/epithelium

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary germ layer origins?Ectoderm, endoderm, and mesoderm contribute to the formation of various epithelial tissues
2. What is the key physiological processes?Involved in protection, selective transport, secretion, sensation, and immune surveillance
3. Why do we have different types of epithelium?Different shapes and numbers of layers let epithelium do special jobs, like letting air in the lungs or protecting the skin from scratches.
4. How does epithelium help us breathe?Thin sheets of flat cells in the lungs let oxygen pass from air into blood, while other cells keep the airways clean.

Homeostasis: The maintenance of a stable internal environment within an organism.
Microvilli: Microscopic projections of the plasma membrane that increase surface area for absorption.
Carcinomas: Cancers that arise from epithelial cells, representing the most common type of cancer.