Question

Frog's heart when taken out of the body continues to beat for sometime. 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 Options:

(1) Only (d)

(2) (a) and (b)

(3) (c) and (d)

(4) Only (c)

Answer 1

The correct answer is (3)

The vertebrates process myogenic heart which is self contractile system or autoexcitable; it will thus keep working outside the body for some time.