Question

use the text to compare and contrast arteries and veins.
veins and arteries are both blood vessels in the circulatory
system. however, their anatomies and functions are quite different.
arteries carry oxygen - rich blood away from the heart to other parts of
the body, while veins carry low - oxygen blood back to the lungs and
heart. most arteries are located deep within the body. they are made up
of thick muscle layers that can handle the high pressure of blood flow,
and they usually appear red. by contrast, veins are composed of thin
muscle layers. both veins and arteries have a hollow space called the
lumen through which the blood can travel. veins can be found deep in the
body or close to the skin, and they usually look blue. the blood in veins
moves under very low pressure. unlike arteries, veins have valves that
keep the blood flowing in the right direction.
are blood vessels
carry blood to the heart
made of thick muscle layers
appear blue
have valves

Explanation:

• Are blood vessels: The text states "Veins and arteries are both blood vessels in the circulatory system", so both should be checked.
• Carry blood to the heart: The text says "Arteries carry oxygen - rich blood away from the heart... while veins carry low - oxygen blood back to the lungs and heart", so only veins should be checked.
• Made of thick muscle layers: The text mentions "Arteries... are made up of thick muscle layers... By contrast, veins are composed of thin muscle layers", so only arteries should be checked.
• Appear blue: The text states "Veins can be found... and they usually look blue", so only veins should be checked.
• Have valves: The text says "Unlike arteries, veins have valves...", so only veins should be checked.

Answer:

• Are blood vessels: Arteries (✔), Veins (✔)
• Carry blood to the heart: Arteries (), Veins (✔)
• Made of thick muscle layers: Arteries (✔), Veins ()
• Appear blue: Arteries (), Veins (✔)
• Have valves: Arteries (), Veins (✔)