Biology Topic Practice

Structure of Blood Vessels

The body has three main types of blood vessels: arteries, veins, and capillaries, each adapted to its function.

Which blood vessels have the thinnest walls?

What is Structure of Blood Vessels?

"Blood vessels are part of the circulatory system and function to transport blood throughout the human body."

Question 1

Which answer best completes the statement? ____ tissue is made of hollow tubes that transport water

Question 2

A student thinks that stents are used to thin the blood. Why is this incorrect?

Question 3

Choose the correct option to complete the statement. Enzymes have an ____ that fits a specific substrate

Question 4

Which answer best completes the statement? Proteases break down proteins into ____

Vascular Adaptations

Arteries: Thick, elastic walls to carry blood under high pressure away from the heart.

Veins: Thinner walls and valves to prevent the backflow of blood towards the heart.

Capillaries: Tiny, one-cell thick walls for efficient exchange of substances with tissues.

Exam Tip

Only veins have valves because the blood pressure in them is much lower than in arteries.

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