Year: 2017
Topic: Locomotion and Movement
Time :
1.
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
(1). X = 24, Y = 12 - True ribs are dorsally attached to vertebral column but are free on ventral side
(2). X = 12, Y = 7 - True ribs are dorsally attached to vertebral column and ventrally to the sternum
(3). X = 12, Y = 5 - True ribs are attached dorsally to vertebral column and sternum on the two ends
(4). X = 24, Y = 7 - True ribs are dorsally attached to vertebral column but are free on ventral side