When a frog's heart is taken out of the body, | vedclass

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(C) The correct answer is $(C)$.The heart of a frog is myogenic, which means the heartbeat originates from the specialized cardiac muscle cells rather

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$(3)$ and $(4)$

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(C) The correct answer is $(C)$.The heart of a frog is myogenic, which means the heartbeat originates from the specialized cardiac muscle cells rather than from nervous impulses.Because the heart is myogenic, it is also autoexcitable, meaning it can generate its own electrical impulses to initiate contraction.Due to these properties, the heart continues to beat outside the body as long as it receives an adequate supply of oxygen, nutrients, and $ATP$ to sustain the metabolic activity of the cardiac muscle cells.

Column-$I$	Column-$II$
$(a)$ Tricuspid valve	$(i)$ Between left atrium and left ventricle
$(b)$ Bicuspid valve	$(ii)$ Between right ventricle and pulmonary artery
$(c)$ Semilunar valve	$(iii)$ Between right atrium and right ventricle

When a frog's heart is taken out of the body, it continues to beat for some time. Select the best option from the following statements.
$(1)$ Frog is a poikilotherm.
$(2)$ Frog does not have any coronary circulation.
$(3)$ Heart is "myogenic" in nature.
$(4)$ Heart is autoexcitable.

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When a frog's heart is taken out of the body, it continues to beat for some time. Select the best option from the following statements.$(1)$ Frog is a poikilotherm.$(2)$ Frog does not have any coronary circulation.$(3)$ Heart is "myogenic" in nature.$(4)$ Heart is autoexcitable.