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easyMCQNEET (UG) 20172026Biology
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Frog's heart when taken out of the body continues to beat for some time. Select the best option from the following statements:(a) Frog is a poikilotherm(b) Frog does not have any coronary circulation(c) Heart is "myogenic" in nature(d) Heart is autoexcitable

  1. A
    Only (d)
  2. B
    (a) & (b)
  3. C
    (c) & (d)
  4. D
    Only (c)

Solution & Step-by-step Explanation

In vertebrates like frogs, the heart is myogenic, meaning the impulse for contraction originates within the heart muscle itself (autoexcitable), rather than from external nerves. As long as it has oxygen and nutrients, it will continue to beat outside the body.

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Frog's heart when taken out of the body continues to beat for some time. Select the best option from the following statements:(a) Frog is a poikilotherm(b) Frog does not have any coronary circulation(c) Heart is "myogenic" in nature(d) Heart is autoexcitable
A
Only (d)
B
(a) & (b)
C
(c) & (d)
D
Only (c)

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