Question

Name organs that are protected by the rib cage.

Answer 1

Hint: The rib cage protects the internal organs forming a protective cage around the thorax of the chest and supports the chest wall preventing it from collapsing. The starting 7 pairs of ribs are known as true ribs.

Complete step by step answer:
Lungs
- The apex of lungs lies above the extent of the primary rib. It reaches 2.5 cm above the medial one- third of the clavicle, just medial to the supraclavicular fossa.
- The base of the lungs rests on the diaphragm which separates the lung from the lobe of the liver and therefore the left lung from the left lobe of the liver, fundus of the stomach and therefore the spleen.
- The anterior border of the left lung shows a good cardiac notch below the extent of the fourth cartilaginous structure.
Heart
- The heart is found within the chest cavity.
- Heart is shielded from posterior to the sternum, superior with the diaphragm and between the lungs.
- Heart is present in between the lungs, behind and slightly to the left of the sternum.
- A base above, it extends to the extent of the 3rd rib.
- The apex below, it's about 9cm left far away from the midline, at the fifth intercostals space.

Additional Information:
- Thoracic Cage may be a skeletal framework which supports the thorax.
- It’s nature is osteocartilaginous and elastic.
- It gives protection for the interior organs of the chest cavity and supports the superior trunk, girdle, and upper limbs.
- It features a significant role play for raising or reducing the intrathoracic pressure to make sure the mechanism of respiration works.
- Coastal cartilages are joined to the anterior ends. The cartilaginous structure and ribs together make the costa.

Note:
- The heart and pericardium are uncovered by the lung within the region of this notch.
- Cartilaginous joints are immobile thus 1st rib and every one costochondral joint don't move during respiration.
- Synovial joints are slightly mobile thanks to movements in both the joints between head, tubercle and vertebrae, necks of ribs rotate along their axis, helping in raising and lowering ribs during respiration.