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The diagram shows a section of a human vein. [https://lh3.goog
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Easy
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Solving time: 2 mins

The diagram shows a section of a human vein.
Heart as the pumping organ
What is the function of the part labelled X ?

A
to make sure the blood flows to the heart

B
to make sure the blood flows to the kidneys

C
to make sure the blood flows to the brain

D
to make sure the blood flows to the lungs

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The diagram shows a section of a human vein.
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What is the function of the part labelled X ?
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Text SolutionText solutionverified iconVerified

. Part labelled X is vein valve or flap tissue. These perform the function of preventing flow of blood in backwards or downward direction.
. When the blood has to reach the heart, it goes against the gravity. This is where valves come into function.
. They are present in lower limbs.
. Disorder of vein valve is condition named Chronic Venous Insufficiency (CVI).
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Question Text
The diagram shows a section of a human vein.

What is the function of the part labelled X ?
TopicTransport in animals
SubjectBiology
ClassGrade 9
Answer TypeText solution:1
Upvotes146