Question

write about the external structure of the heart ?

class 10 ​

Answer 1

Answer:

The heart wall is made up of three layers: the inner endocardium, middle myocardium and outer epicardium. These are surrounded by a double-membraned sac called the pericardium. The innermost layer of the heart is called the endocardium.

Answer 2

Answer:

The heart wall is made up of three layers: The inner endocardium, middle myocardium and outer epicardium.These are surrounded by a double- membraned sac called the pericardium.The inner most layer of the heart is called the endocardium

Explanation:

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