Difference between neurogenic and myogenic heart
Answers
Answer:
Difference between Myogenic and Neurogenic heart. -
Myogenic heart :
1. Occurrence: Mollusks and vertebrates.
2. Initiation of heart beat: Under nodal tissues, so under muscular control.
3. Heart removed from body: Continues to beat for some time.
Neurogenic heart :
1. Occurrence: Crustaceans, insects and annelids.
2. Initiation of heart beat: Under a ganglion present on the heart, so under nervous control.
3. Heart removed from body: Stops beating.
Explanation: hope this helps U!!
Answer :-
Myogenic Heart :-
■ In "Myogenic Heart", the contractions are initiated by a special node of modified cardiac muscles called "Sino-Atrial node" (SA node).
■ Examples :-
- Hearts of "Vertebrates"
- Hearts of "Tunicates"
- Hearts of "Molluscs"
Neurogenic Heart :-
■ In "Neurogenic Heart", the contractions are initiated by a nerve ganglion, situated in the vicinity of the heart.
■ Examples :-
- Invertebrates like anthropods (Cockroach)
- Some annelids (Earthworm)
Extra Information :-
- Acetylcholine secreted by the nerve ending accelerates the neurogenic heartbeat.
- In neurogenic heart, the heartbeats originate by nevous stimulation.
- If the nerve supply of the hearts of vertebrates is cut off or even removed from the body, it continues to beat.