Q3 of 95 Page 87

Can you answer why the pulmonary artery shown in Fig. 7.6 is blue in colour?

The pulmonary artery arises from the right ventricle of the heart and carries deoxygenated blood to the lungs. As we know that the standard colour convention to symbolize the transport of deoxygenated blood in the diagram is blue thus, the pulmonary artery shown in the above diagram is blue in colour.


More from this chapter

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1

Fill in the blanks:

(i) Ventricles have …………………………walls when compared with those of auricles.


(ii) Ventricles give rise to two large blood vessels called ……………………and …………………………

 2

Where are the following located?

(i) Tricuspid valve


(ii) Mitral valve


(iii) Pulmonary semilunar valves

 1

Name the following:

(i) Contraction phase of the heart.


(ii) The structure that holds the heart valves in position.

 2

Mention the phase of heart beat in which both the atrio-ventricular valves are closed.