Question

The diagram given below represents a certain
category of blood vessels showing the role of a
special structure in their walls :
DIRECTION OF
BLOOD FLOW
(1) Name the kind of blood vessels shown.
(ii) Name the structures shown inside the blood
vessels.
(in Describe the role of these structures.
(iv) Are these structures present in any other kind of
blood vessel ? If so, name it.
(y Towards which side of the figure (top or bottom)
is the heart located ?
[ICSE 2003]​

Answer 1

Answer:

1. Its either a vein or artery, depending on the picture which I can't see.

2. Valves if ( 1.)is a vein ( im assuming it to be a vein now)

3. Maintain direction of blood.

4. Yes (Pulmonary artery)

5. I need the picture to say....

Thank you.