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Body Fluids and Circulations

Match The Following

Match the following options:

A. Eosionophils	(i) Coagulation
B. R.B.C.	(ii) Universal Recipient
C. AB group	(iii) Resist Infections
D. AB group	(iv) Contraction of Heart
E. Systole	(v) Gas transport

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Short Answer Type

Why do we consider Blood as a connective tissue?

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Long Answer Type

Describe the evolutionary changes in the pattern of heart among vertebrates.

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Short Answer Type

Why do we call our heart myogenic?

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5.
Sino-auricular node is called pacemaker of our heart. Why?

Sino-auricular node is called pacemaker, because nerve impulse or wave of contraction starts from it and goes to both auricles. Since the SA node initiates and maintains the rhythmicity of the heart and maintains the pace of the heart beat, it is known as the natural pacemaker of the human body.

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