Question

[ICSE 1998]
16.
circulatory system of man:
[ICSE 2011]
LUNGS
8
HEART
6.
LIVER
2
3
SMALL
INTESTINE
5
4
KIDNEY
(1) Name the blood vessels labelled 1, 3, 6, and
7.
(ii) Name the blood vessel that supplies the walls
of the heart with oxygen.
(iii) Draw a neat labelled diagram of the blood
vessel numbered '2' as seen in a cross-section.
(iv) Mention one structural difference between blood
vessels numbered 4 and 5. [ICSE 2011]
ulatory System
(a) Given below is the simplified pathway of the​

Answer 1

Explanation:

ii. Pulmonary vein

iv.

Arteries have narrow lumen.

Veins have wider lumen.

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