Q3 of 95 Page 94

Why do people have a common belief that the heart is located on the left side of the chest?

The narrow end of the roughly triangular heart is pointed to the left side & during working the contraction of the heart is most powerful at this end giving a feeling that the heart is on the left side.


More from this chapter

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1

What does the term "double circulation" mean?

 2

When are the sounds "LUBB" and "DUP" produced respectively during heart beat?

 4

Differentiate between members of each of the following pairs with reference to the aspect asked within brackets:

(a) Erythrocytes and leucocytes (function)


(b) Artery and vein (direction of blood flow)


(c) Artery and vein (type of blood primarily flowing through)


(d) Tricuspid and bicuspid valves (location).

 5

Match the items in Column 'A' with those in Column 'B'. Rewrite the correct matching pairs.



































Column A



Column B



(a) S A Node



Plasma



(b) Defective haemoglobin in RBC



Serum



(c) Muscle fibres located in heart



Pacemaker



(d) The liquid squeezed Out of blood during clotting



Sickle cell anemia



(e) Never tires, keep on contracting and relaxing



Purkinje fibres



(f) Cardiac cycle



Cardiac muscle



(g) Liquid part of the blood Without corpuscles



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