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[A] : The record of electric potential t...

[A] : The record of electric potential that is ini- tiated in the cardiac muscle is known as Electrocardiograph .
[R]: This is valuable for preliminary studies of heart muscles.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

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The correct Answer is:
D
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Read the assertion and reason carefully to mark the correct option out of the options given below: (a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion (c) If the assertion is true but the reason is false (d) If both the assertion and reason are false (e) If the assertion is false but reason is true Assertion : EEG is of immense diagnostic value in the cardiac diseases. Reason : Defects in cardiac functions can be reflected in changes in the patten of electrical potentials recorded in the EEG.

Read the assertion and reason carefully to mark the correct option out of the options given below: (a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion (c) If the assertion is true but the reason is false (d) If both the assertion and reason are false (e) If the assertion is false but reason is true Assertion : Electorcardiogram is record of electrical activity of the heart which shows certain waves called P,Q,R,S and T waves. Reason : It gives important information concerning the spread of excitation to the different parts of heart and it is of value in the diagnosis of cases of abnormal cardiac rhythm and myocadial damage.

TRUEMAN BIOLOGY-Animal Physiology -ASSERTION AND REASON
  1. [A] : All terrestrial mammals are air breathers. [R]: Because of t...

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  2. A : Sense organs, do not interpret the stimulus, it is done by brain. ...

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  3. [A] : The record of electric potential that is ini- tiated in the card...

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  4. [A] : in amphibians heart is two chambered. [R]: The oxygenated blo...

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  5. [A] : Peyer s patches are derivatives of lym- phoid tissue. [R]: T...

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  6. [A] : Elephants have lophodont type of teeth. [R]: There is an int...

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  7. [A] : A complete double circulation occurs in birds for the first time...

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  8. [A] : The heart of birds is more advanced than the four chambered hear...

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  9. A : Portal system consists of veins which start from capillaries and e...

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  10. [A]: in mammalian heart there is a very swift conduction of stimulatio...

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  11. [A] : Reduced blood can carry more CO2 than oxygenated blood. [R]:...

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  12. [A] : The central nervous system regulates the release of saliva from ...

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  13. [A] : Gall stones are pebbie sized structures that formed in the gall...

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  14. [A] : Upon stimulation of a muscle cell, cal- cium ions (Ca^(++)) are...

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  15. [A]: Osteoporosis is a bone disorder that re- sults from the loss of c...

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  16. [A] : In mammals, ends of presynaptic fibres are enlarged to form syn...

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  17. [A] : Receptors located in tendons, joints and skeletal muscle give in...

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  18. [A]: Lateral-iine organs are important in con- nection with aquatic mo...

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  19. [A] : Accomodation in the bird's eye is con- trolled by the ciliary ap...

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  20. [A] : Mammals lack mucous glands in their skin. [R] : The epidermis ...

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