Select the correct option.
1. There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.
2. 8^th, 9^th and 10^th pairs of ribs articulate directly with the sternum.
3. 11^th and 12^th pairs of ribs are connected to the sternum with the help of hyaline cartilage.
4. Each rid is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.

The critical event for the contraction of striated muscles would be that calcium ions:

The number of pairs of vertebrochondral ribs in humans are:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

In the light of the above statements choose the correct answer from the options given below:

The neurotransmitter released by the motor neurons at the neuromuscular junction is:

Cells of human body exhibit three main types of movements. Cytoskeleton elements called microfilaments play an important role in:
A. Amoeboid movements
B. Ciliary movements
C. Muscular movements

Abnormal curvature of the vertebral column where the alignment shows a lateral deviation is called as:

Accumulation of uric acid in joints will lead to:

Skeletal muscles appear striated due to presence of two characteristic proteins in alternating dark and light bands. Which of the following is a correct match of the protein with its light refractive property and colour?

The phosphogen that helps the regeneration of ATP from ADP during muscle contraction in vertebrates is