Question

The heart is protected by the
A. Diaphragm
B. Rib cage
C. Skull
D. None of the above

Answer 1

Hint: The heart is a part of the cardiovascular system and is composed of four chambers- left and right atrium, left and right ventricle. It is located in the thoracic cavity.

Complete answer:
The heart is located between the two lungs in the middle of the chest and slightly to the left of the sternum. The rib cage is known for enclosing and protecting the thoracic cavity. In the thoracic cavity, the heart and lungs are present. Hence, the rib cage protects the heart.

The diaphragm is a dome-shaped structure, whose superior surface forms the base of the heart and lungs while its inferior surface forms the roof of the abdomen. It is known for separating the thoracic cavity from the abdomen. It is a thin skeletal muscle responsible for carrying out the process of breathing.
Skull is the skeletal structure that is known for protecting the brain and supports the face. The human skull is composed of twenty-two bones- eight cranial bones and fourteen facial bones.

Hence, the correct option is (B).

Additional information:
The heart, along with the circulatory system forms a part of the cardiovascular system. It is known for pumping blood to different parts of the body. The left side of the heart receives the blood rich in oxygen from the lungs while the right side of the heart receives the blood poor in oxygen from different parts of the body thereby, pumping it to different parts of the body and the lungs respectively.

Note: The heart is situated in the thoracic cavity in between the two lungs is protected by the rib cage. The heart is of mesodermal origin and is surrounded by a double-layered membrane called the pericardium.