Write the feature that distinguish between the two : Sino-atrial node and Atrio-ventricular node 

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$SA$ node : It is a special type of muscular tissue formed in group of the wall of atrium. It initiates the heart beat.

$AV$ Node : Fibrous tissue located between right atrium and ventricle. Electric waves pass through it.

Similar Questions

Match the items given in Column $I$ with those in Column $II$ and select the correct option given below:

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

  • [NEET 2018]

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