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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
Explanation
A myogenic, autoexcitable heart beats without nervous input.
Detailed Solution
The frog (like other vertebrates) has a myogenic heart with a self-contractile system, i.e. it is autoexcitable; because of this it keeps working outside the body for some time.