Question:

The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is

Updated On: Jul 7, 2022

SA Node$\quad$ AV node$\quad$ Purkinje fibre $\quad$AV Bundle
SA Node$\quad$ Purkinje fibre $\quad$AV Node $\quad$AV Bundle
SA Node$\quad$ AV node$\quad$AV Bundle $\quad$Purkinje fibre
SA Node$\quad$ Purkinje fibre $\quad$ AV Bundle $\quad$AV Node

Hide Solution

Verified By Collegedunia

The Correct Option is C

Solution and Explanation

The nerve impulses produced by the SA node travel to the AV node and cause the initiation of the articular depolarization. From here, the impulse travels to the AV bundle and then to the Purkinje fibres. Thus, the correct answer is 'SA Node, AV node, AV Bundle, Purkinje fibre.'

Was this answer helpful?

Notes on Circulatory Pathways

Concepts Used:

Circulatory Pathways

Virtually every cell, tissue, organ, and system in the body is impacted by the circulatory system.

Digestive - Absorbs nutrients and water; delivers nutrients (except most lipids) to liver for processing by hepactic portal vein; provides nutrients essential for hematopoiesis and building hemoglobin.
Endocrine - Delivers hormones: atrial natriuretic hormone (peptide) secreted by the heart atrial cells to help regulate blood volumes and pressures; epinephrine, ANH, angiotensin II, ADH, and thyroxine to help regulate blood pressure; estrogen to promote vascular health in women and men.
Integumentary - Carries clotting factors, platelets, and white blood cells for homeostatis, fighting infection, and reparing damage; regulates temperature by controlling blood flow to the surface, where heat can be dissipated; provides some coloration of integument; acts as a blood reservoir.
Muscular - Provides nutrients and oxygen for contraction; removes lactic acid and distributes heat generated by contraction; muscular pumps aid in venous return; exercise contributes to cardiovascular health and helps to prevent atherosclerosis.