EVERYDAY SCIENCE

Detailed explanation-1: -The ribs are connected to the sternum with a strong, somewhat flexible material called cartilage. The rib cage help protects the organs in the chest, such as the heart and lungs, from damage.

Detailed explanation-2: -The base of the heart is located at the level of the third costal cartilage, as seen in Figure 16.1. 1. The inferior tip of the heart, the apex, lies just to the left of the sternum between the junction of the fourth and fifth ribs near their articulation with the costal cartilages.

Detailed explanation-3: -The ribs form a cage that shelters the heart and lungs, and the pelvis helps protect the bladder, part of the intestines, and in women, the reproductive organs.

Detailed explanation-4: -The ribs are the skeletal protection for the lungs and the chest cavity. The ribs and rib muscles expand and contract with normal breathing.

Detailed explanation-5: -The ribs are the bony framework of the thoracic cavity. The ribs form the main structure of the thoracic cage protecting the thoracic organs, however their main function is to aid respiration. There are twelve pairs of ribs.