Question

this is sad to note that

the chapter coloum of ask doubts didnt have the name of the chapter i have doubt in

so each time i typed it it said invalid

anyways the chapter i ave doubt in is

body fluids andcirculation

the question is

WRITE A NOTE ON PURKINJE FIBRES

thankyou pls help me with this

AS SOON AS POSSIBLE

Answer 1

The Purkinje fibers (Purkinje tissue or subendocardial branches) are located in the inner ventricular walls of the heart, just beneath the endocardium in a space called the subendocardium. The Purkinje fibers are specialised conducting fibers composed of electrically excitable cells that are larger than cardiomyocytes with fewer myofibrils and a large number of mitochondria and which (cells) conduct cardiac action potentials more quickly and efficiently than any other cells in the heart.^[1]Purkinje fibers allow the heart's conduction system to create synchronized contractionsof its ventricles, and are, therefore, essential for maintaining a consistent heart rhythm