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veins

JC

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Posts: 27

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12 years ago

do veins have valves?

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bio_man

wrote...

#1

Educator

12 years ago

Quote from: JC (12 years ago)

do veins have valves?

Yes

lewis

wrote...

#2

Valued Member

12 years ago

Quote from: bio_man (12 years ago)

Yes

Arteries do not have valves because the heart provides the pressure needed to send blood through the system. Veins have valves because venous pressure is often not great enough (as the blood must overcome gravity and other forces) to return the blood to the heart.

JC Author

wrote...

#3

12 years ago

I see thanks Lewis for elucidating. Person Raising Both Hands in Celebration

Person Raising Both Hands in Celebration

thanks also to Bioman Slight Smile

Slight Smile

Answer accepted by topic starter

bio_man

wrote...

#4

Educator

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Posts: 33233

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12 years ago

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