Table of epithelia of human organs

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/table-of-epithelia-of-human-organs

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 embryonic origin?Derived from ectoderm, mesoderm, and endoderm germ layers
2. What is the key cellular junctions?Tight junctions, adherens junctions, desmosomes, gap junctions
3. What do epithelial tissues do in our body?They form the boundaries of organs and body cavities, let certain things pass in and out, absorb nutrients, secrete helpful substances, protect us from germs, and help us feel touch, pain, and temperature.
4. Which germ layer makes the skin's outer layer?The ectoderm creates the epidermis, the outer skin layer.

Apical-Basal Polarity: The distinct structural and functional differences between the top (apical) and bottom (basal) surfaces of an epithelial cell.
Epithelial-Mesenchymal Transition (EMT): A biological process where epithelial cells lose their cell-cell adhesion and polarity, gaining migratory and invasive properties.
Homeostasis: The maintenance of a stable internal environment within an organism, despite external changes.