Consider the following statements with two blanks X and Y and select the option which correctly fills up these blanks.
In the center of the intervertebral disc, a soft area is present called ....X.... , which is supposed to be a remnant of ....Y........ .

1. X-Nucleus pulposus, Y-Nerve cord

2. X-Centrum, Y-Noto cord

3. X-Nucleus pulposus, Y-Noto cord

4. X- Centrum, Y-Nerve cord

Total number of bones in the hind limb of a man is:

1. 14

2. 21

3. 24

4. 30

The functional unit of contractile system in striated muscle is:

The joint between atlas and axis is called:

1. pivot joint

2. hinge joint

3. saddle joint

4. angular joint

Animals of class-Mammalia have:

1. seven cervical vertebrae

2. seven cranial nerve

3. single ventricular chamber

4. fourteen cervical vertebrae

Which of the following muscular disorders is inherited?

1. Botulism

2. Tetany

3. Muscular dystrophy

4. Myasthenia gravis

Select the correct option.

If production of pyruvic acid by anaerobic metabolism in a muscle is faster than it can be utilized, the surplus is converted to:
1. lactic acid
2. adenosine diphosphate
3. carboxylic acid
4. creatine phosphokinase

Identify the incorrectly matched pair:

The number of which of the following would normally be equal in human skeleton?
1. Vertebrochondral ribs and digits in both upper limbs
2. Bones in cranium and the facial skeleton
3. Carpals and tarsals
4. Vertebrosternal ribs and digits in one lower limb