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.
X=12, Y=5
|
|
True ribs are attached dorsally
to vertebral column and sternum
on the two ends |
X=24, Y=2
|
|
The true ribs are dorsally attached
to vertebral column but are free on
ventral side |
X=24, Y=12
|
|
True ribs are dorsally attached
to vertebral column but are free on
ventral side |
X=12, Y=7
|
|
True ribs are attached dorsally to
vertebral column and ventrally to
the sternum |
