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The Circulatory System
The diagrams given below are cross sections of blood vessels:
i. Identify the blood vessel A B and C
ii. Name the parts labelled 1 to 3
iii. Name the type of blood that flows through A
iv. Mention one structural difference A and B
v. In which of the above vessels does exchange of gases actually take place?
i. The blood vessel are
A – Artery
B – Vein
C – Capillarity
ii. The parts labelled 1 to 3 are:
1. Connective tissue layer
2. Lumen
3. Muscular layer.
iii. Name the type of blood that flows through A
Oxygenated blood
iv. The difference is:
A is an artery and has thick muscular walls which are elastic in nature.
B is a vein which has thin muscular walls which are less elastic in nature.
v. In C – Capillary
State the exact location of the following:
Pulmonary semilunar valve
Pulmonary semilunar valve: Located at the opening of the right ventricle into the pulmonary artery.
Choose the correct answer from the four options given below:
Pulse wave is mainly caused by the
-
Systole of atria
-
Diastole of atria
-
Systole of the left ventricle
-
Systole of the left ventricle
C.
Systole of the left ventricle
Differentiate between the following pairs on the basis of what is mentioned within brackets:
Bicuspid valve and Tricuspid valve (function)
| Bicuspid valve | Tricuspid valve |
| The bicuspid or mitral valve prevents the backflow of the blood from the left ventricle to the left atrium. | The tricuspid valve prevents the backflow of the blood from the right ventricle to the right atrium. |
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Mock Test Series
Mock Test Series