Question

A patch of nodal tissue responsible for
initiating the rhythmic contractile
acthity of heart is present in​

Answer 1

Answer:

Hi,

Explanation:

The patch of nodal tissue responsible for

initiating the rhythmic contractile

acthity of the heart is present in​ the Sino-atrial node

Answer 2

Answer

Nodal tissue are specialised cardiac musculature present in heart.

A patch of nodal tissue responsible for initiating the rhythmic contractile activity of heart is present in right upper corner of the right atrium called sino atrial node (SAN).

$\bigstar$ The nodal musculature has the ability to generate action potentials without any external stimuli.

$\bigstar$ The SAN can generate the maximum number of action potentials that is 70 - 75 per minute.

$\bigstar$ It is responsible for initiating and maintaining the rythmic contractile activity of the heart it is known as pacemaker.

$\bigstar$ The SAN plays a major role in cardiac cycle by generating an action potential which stimulates both atria to undergo a simultaneous contraction.