Why do we call our heart myogenic? from Biology Body Fluids and

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 Multiple Choice QuestionsMatch The Following

1.

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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2.

Why do we consider Blood as a connective tissue?

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3.

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

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4.

Why do we call our heart myogenic?


 

In the human heart, the contraction is initiated by a special modified heart muscle known as sinoatrial node or the SA-node. It is located in the right atrium. The SA node has the inherent power of generating a wave of contraction and controlling the heart beat. Hence, it is known as the pacemaker. Since the heart beat is initiated by the SA node and the impulse of contraction originates in the heart itself, the human heart is termed myogenic. The hearts of vertebrates and molluscs are also myogenic.

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5.

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

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6.

Write the differences between

(d) P wave and T wave

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7.

Write the differences between

Systole and diastole

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8.

Write the differences between

(a) Blood and lymph

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9.

Write the differences between

Open and closed circulatory system

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 Multiple Choice QuestionsLong Answer Type

10.

What is the differences between lymph and Blood?

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