Blood vessel

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/blood-vessel

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 historical etymology?The term 'vascular' originates from the Latin word 'vas', meaning vessel
2. Why do arteries have thick walls?Arteries have thick, muscular, and elastic walls so they can handle the high pressure from the heart’s pumping action. This keeps blood moving smoothly away from the heart.
3. How do capillaries help our body?Capillaries are very thin tubes that let oxygen, nutrients, and waste move between the blood and the cells. They are the main place where the body’s tissues get what they need.

Endothelium: The inner lining of blood vessels, composed of a single layer of cells.
Hemodynamics: The study of blood flow through the circulatory system, considering pressure and resistance.
Vasodilation: The widening of blood vessels, which increases blood flow.
Vasoconstriction: The narrowing of blood vessels, which decreases blood flow.