Question

Assertion (a) : mammalian heart is called myogenic heart. Reason (r) : heart-beat is regulated by a specialized muscle bundle (pacemaker) (a) both (a) and (r) are true and (r) explains (a). (b) both (a) and (r) are true but (r) doesn't explain (a). (c) (a) is true but (r) is false. (d) (a) is false but (r) is true.

Answer 1

Question

Assertion : Mammalian heart is called Myogenic heart

Reason: Heart beat is regulated by a specialized muscle bundle called pacemaker

Answer

Myogenic Heart

• A myogenic heart means it is muscle controlled and its functioning is based on contraction and relaxation of the muscle fibers

• The continuous working of heart is due to the working of pacemaker

Both assertion and reason are correct and assertion explains the reason