NEET | 2017Excretory Products and their EliminationHard
Question
Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :
Options
A.
X = 12, Y = 7
True ribs are attached dorsally to vertebral column and ventrally to the sternum.
B.
X = 12, Y = 5
True ribs are attahced dorsally to vertebral column and sternum on the two ends.
C.
X = 24, Y = 7
True ribs are dorsally attached to vertebral column but are free on ventral side.
D.
X = 24, Y = 12
True ribs are dorsally attached to vertebral column but are free on ventral side
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