NEET Botany Locomotion And Movement Class 11 Questions

Match the following columns and select the correct option.

Select the correct option. (A) 11^{th} and 12^{th} pairs of ribs are connected to the sternum with the help of hyaline cartilage. (B) Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum. (C) There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs. (D) 8^{th}, 9^{th} and 10^{th} pairs of ribs articulate directly with the sternum.

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.

Lack of relaxation between successive stimuli sustained muscle contraction is known as

It is much easier for a small animal to run uphill than for a large animal, because

During muscle contraction in humans the :-