Answer:
(a) Bicephalic ribs,
each ribs has two articulating surfaces on its dorsal end hence are called as
bicephalic ribs.
(b) True ribs are
the first seven pairs of ribs Dorsally these ribs are attached to the thoracic
vertebrae and ventrally connected to the sternum with the help of hyaline cartilage.
(c) Floating
ribs are the last two pair (11th and 12th) of ribs and are not-connected ventrally
to the sternum therefore, called as floating ribs.
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