With respect to rib cage, explain the following:
(a) Bicephalic ribs
(b) True ribs
(c) Floating ribs
Ans:
(a) Each rib has two articulation surfaces at its dorsal end and are calledbicephalic ribs.
(b) First seven pairs of the ribs are known as the true ribs. They are dorsally attached to the thoracic vertebrae and to the sternum ventrally.
(c) Last two pairs of ribs are not connected ventrally and are called floating ribs.