What is the Difference Between Myogenic and Neurogenic Heart?
🆚 Go to Comparative Table 🆚The main difference between myogenic and neurogenic hearts lies in the way they initiate cardiac movement. Here are the key differences between the two:
- Myogenic Heart: In myogenic hearts, the cardiac movement is initiated rhythmically by specialized muscle cells present within the heart itself. Myogenic hearts are characteristic of vertebrates and are part of a closed circulatory system. The structure of the heart in myogenic hearts usually comprises two to four chambers, such as atrium and ventricles, which open and close as the heart beats.
- Neurogenic Heart: In neurogenic hearts, the cardiac movement is initiated by nerve impulses arising from the brain. Neurogenic hearts are characteristic of lower invertebrates and are part of an open circulatory system. The structure of the heart in neurogenic hearts is often sac-like or tubular, and it has ostia or lateral openings that open and close as the heart beats.
In summary, the beating rhythm of myogenic hearts is set by specialized muscle cells, while the beating rhythm of neurogenic hearts is set through nerve impulses.
Comparative Table: Myogenic vs Neurogenic Heart
The main difference between myogenic and neurogenic hearts lies in the mechanism that sets their beating rhythm. Here is a comparison table highlighting the key differences:
Feature | Myogenic Heart | Neurogenic Heart |
---|---|---|
Rhythm Source | Specialized muscle cells within the heart | Nerve impulses |
Circulatory System | Closed circulatory system, found in vertebrates | Open circulatory system, found in invertebrates |
Heart Structure | Comprises 2-4 chambers | Sac-like or tubular |
Heart Function | Pumps blood throughout the body | Also known as suction pumps |
Examples | Human heart, found in adults | Embryonic hearts, usually seen in embryos |
In summary, a myogenic heart's beating rhythm is set by specialized muscle cells within the heart, while a neurogenic heart's rhythm is set by nerve impulses. Myogenic hearts are part of a closed circulatory system, which is typical of vertebrates, while neurogenic hearts are part of an open circulatory system, found in invertebrates.
- Contractile Myocardium vs Autorhythmic Myocardium
- Neurogenic vs Vascular Claudication
- Myopathy vs Neuropathy
- Dilated Cardiomyopathy vs Hypertrophic Cardiomyopathy
- Myocarditis vs Cardiomyopathy
- Cardiomegaly vs Cardiomyopathy
- Neurogenic Shock vs Spinal Shock
- Myocardium vs Pericardium
- Ischemic Heart Disease vs Myocardial Infarction
- Vasoconstriction vs Vasodilation
- Smooth Muscle vs Cardiac Muscle
- Inotropic vs Chronotropic
- Cardiomyopathy vs Congestive Cardiac Failure
- Neurogenesis Neuroplasticity vs Neuroregeneration
- Angina vs Myocardial Infarction
- Left Ventricular Hypertrophy vs Hypertrophic Cardiomyopathy
- Chronotropic vs Dromotropic
- Skeletal Muscle vs Cardiac Muscle
- Angina Pectoris vs Myocardial Infarction