Question

Differentiate between Neurogenic heart and Myogenic heart.

Answer 1

Hint: The main organ for the circulation of blood in the organism which is responsible for the transportation of oxygen to the body required for the survival.

Complete answer:

S.no.	Neurogenic Heart	Myogenic heart
1.	Beating rhythm is set through nerve impulses.	Beating rhythm is set through specialised muscle cells present within the heart.
2.	Present in animals with an open circulatory system.	Present in animals with a closed circulatory system.
3.	Also known as Suction Pumps.	Also known as pressure pumps.
4.	Heart is usually sac-like or tubular.	Heart is 2, 3, 4 chambered.
5.	It has Ostia or lateral openings which open and close as the heart beats.	It has Atrium and Ventricles which open and close as the heart beats.
6.	Usually seen in embryos.	Usually seen in adults.

                Dig.1: Neurogenic Heart Dig.2: Myogenic Heart


Notes:
1. In Open circulatory system the blood is not enclosed in blood vessels, but is pumped into a cavity called hemocoel.
2. Sometimes the rhythmic beats of the heart get disturbed. A pacemaker is a small battery operated device which senses when the heart beats irregularly and corrects its pace.
3. Human heart is 4 chambered and undergoes double circulation.
4. Electrocardiogram (ECG) is a graphical representation of the electrical activity of the heart during cardiac cycle.