Question

Out of ‘X’ pairs of ribs in humans, only ‘Y’ pairs are

true ribs. Select the option that correctly represent

values of X and Y and provides their explanation

1) X = 12, Y = 8True ribs are attached dorsally to

vertebral column and Sternum on the two ends

2) X =14, Y=17 True ribs are dorsally attached to

vertebral column but are free on ventral side

3) X =24, Y = 7 True ribs are dorsally attached to

vertebral column but are free on ventral side

4) X = 12, Y =7 True ribs are attached dorsally to

vertebral column and ventrally to the sternum​

Answer 1

Answer:

option 4 is right.........

Answer 2

Explanation:

Option 1) X = 12, Y = 7 True ribs are attached dorsally to vertebral column and ventrally to the sternum Option 2) X = 12, Y = 5 True ribs are attached dorsally to vertebral column and sternum on the two ends Option 3)

X = 24, Y = 7 True ribs are dorsally attached to vertebral column but are free on ventral side

Option 4) X = 24, Y = 12 True ribs are dorsally attached to vertebral column but are free on ventral side