Why is the human heart called myogenic i...

Why is the human heart called myogenic in nature?

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### Step-by-Step Solution 1. **Definition of Myogenic**: The term "myogenic" refers to the origin of the heartbeat being generated from the muscle tissue itself, rather than being externally stimulated by nerves. 2. **Structure of the Heart**: The human heart is a four-chambered organ consisting of two atria (auricles) and two ventricles. The heart's muscle tissue is specialized for contraction and is known as cardiac muscle. 3. **Sinoatrial Node (SA Node)**: Located in the right atrium, the SA node is a cluster of specialized cardiac muscle cells. It acts as the natural pacemaker of the heart by generating electrical impulses that initiate each heartbeat. ...

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Human heart is

Myogenic

Neurogenic

Venous

Both (1) & (2)

The heart beat of which animal is myogenic in nature

Cockroach

Leech

Elephant

All of these

Frog's heart when taken out of the body continues to beat for sometime. Select the best option from the following- Statements : I. Frog is a poikilotherm. II. Frog does not have any coronary circulation. III. Heart is "myogenic" in nature. IV. Heart is autoexcitable

Only IV

I and II

III and IV

Only III