Chorioallantoic membrane

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/chorioallantoic-membrane

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 scientific name?Chorioallantois
2. What is the developmental origin?Fusion of the mesodermal layers of the chorion and allantois
3. How does the CAM help a baby bird breathe?It has many tiny blood vessels that let oxygen from the air in the eggshell move into the baby’s blood and take out carbon dioxide, just like lungs.
4. Why does the CAM store waste like uric acid?The CAM collects waste such as uric acid from the baby’s blood and stores it in a sac so the waste doesn’t build up and hurt the baby.

Oviparous: Reproducing by laying eggs.
Angiogenesis: The physiological process through which new blood vessels form from pre-existing vessels.
Homologue: A structure in one species that is similar in origin and structure to a structure in another species, often serving a similar function.