Stimulation of a muscle fiber by a motor neuron occurs at:

1. the neuromuscular junction

2. the transverse tubules

3. the myofibril

4. the sarcoplasmic reticulum

Select the correct statement with respect to locomotion in humans:

Low Ca²⁺ in the body fluid may be the cause of:

1. tetany

2. anaemia

3. angina pectoris

4. gout

The length of which of the following regions shown in the given diagram of a sarcomere remains unchanged during muscle contraction?

1. 1

2. 2

3. 7

4. 6

Elbow joint is an example of:

1. Pivot joint

2. Hinge joint

3. Glinding joint

4. ball and socket joint

Which one of the following is the correct matching of three items and their grouping category?

Which of the following disorders is an outcome of irregularities in the metabolism of the nitrogenous waste?

1. Osteoporosis

2. Gouty arthritis

3. Osteoarthritis

4. Rheumatoid arthritis

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: