Question

171. Mark the feature/function which is not associated
with bundle of His?
(1) Carry cardiac impulses from AV node to
ventricles
(2) Modified muscle fibres, exhibits autoexcitability
(3) It is bundle of neurons affecting heart rate
(4) Helps to spread impulses in ventricular
musculature​

Answer 1

ANSWER

3rd option

EXPLANATION

The bundle of His consists of wide, fast-conducting MUSCLE FIBRES (NOT NEURONS) that carry the cardiac impulse through the insulating annulus fibrosus into the fibrous upper part of the ventricular septum. There, it becomes the left bundle branch and the right bundle branch.

Note

Muscle cells and nerve cells (neurons) are two very different types of cells. Muscle cells (myocytes) contract to produce movement while nerve cells send messages from receptor cells to either glandular cells or muscle cells relaying messages throughout the body

thanks for the thanks