Question

Myocardium is a special muscle tissue found only in the

• A. Brain
• B. Heart
• C. Stomach
• D. Lungs

Hint:

Myocardium is essential for the contraction of the heart and is found only in the heart.

Answer 1

The Correct Option is B

Step 1: Understanding myocardium.
The myocardium is the thick, muscular layer of the heart responsible for pumping blood. It is a specialized muscle tissue found only in the heart, making it different from other types of muscle tissues such as skeletal or smooth muscle.
Step 2: Analyzing the options.
(A) Brain: This is incorrect as the myocardium is not found in the brain.
(B) Heart: Correct — The myocardium is found only in the heart and plays a vital role in heart contractions.
(C) Stomach: This is incorrect, as the stomach contains smooth muscle, not myocardium.
(D) Lungs: The lungs do not contain myocardium; they contain smooth muscle tissue.
Step 3: Conclusion.
The correct answer is (B) Heart as myocardium is a special muscle tissue found only in the heart.

Answer 2

The human body has three broad types of muscle tissue - skeletal, smooth, and cardiac - and each organ in the options is associated with a specific type. Matching "myocardium" (cardiac muscle) to its home organ settles this.

1. Brain: The brain is composed of neural tissue, not muscle tissue of any kind, so myocardium cannot be found here.
2. Heart: The heart's muscular wall is called the myocardium, made of cardiac muscle, a tissue type that is structurally and functionally unique (striated but involuntary, with intercalated discs allowing coordinated contraction), and it exists nowhere else in the body.
3. Stomach: The stomach wall contains smooth muscle, which is involuntary but lacks the striated, intercalated-disc structure of cardiac muscle, a different tissue type from myocardium.
4. Lungs: The lungs themselves are composed mainly of elastic and epithelial tissue for gas exchange, with smooth muscle present in airway walls, but no cardiac muscle tissue.

Only the heart is built from the specific cardiac muscle tissue called myocardium.

Therefore, the correct answer is Heart.