GROSS ANATOMY

GROSS ANATOMY

VERTEBRAL COLUMN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Bones of the thoracic cavity that are not attached to the sternum; 5 lower ribs
A
small rib
B
floating rib
C
true rib
D
false rib
Explanation: 

Detailed explanation-1: -Final answer: Floating ribs (two pairs) are not attached to the sternum.

Detailed explanation-2: -The 8th, 9th, and 10th pairs-false ribs-do not join the sternum…

Detailed explanation-3: -The false ribs are the ribs that indirectly articulate with the sternum, as their costal cartilages connect with the seventh costal cartilage; by the costochondral joint; They are the eighth, ninth, and tenth ribs.

Detailed explanation-4: -The sternum is a partially T-shaped vertical bone that forms the anterior portion of the chest wall centrally. The sternum is divided anatomically into three segments: manubrium, body, and xiphoid process. The sternum connects the ribs via the costal cartilages forming the anterior rib cage.

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