Locomotion and Movement

Which of the following is the correct order of arrangement of vertebral column from the head to toe?

1. Cervical vertebra, thoracic vertebra, lumbar vertebra, sacrum
2. Cervical vertebra, thoracic vertebra, sacrum, lumbar vertebra
3. Sacrum, lumbar vertebra, thoracic vertebra, cervical vertebra
4. Cervical vertebra, lumbar vertebra, thoracic vertebra, sacrum

Which of the following are Autoimmune disorders? Choose the most appropriate answer from the options given below:

1. A, B & D only
2. A, B & E only
3. B, C & E only
4. C, D & E only

Match List I with List II : Choose the correct answer from the options given below :

1. A-IV, B-II, C-III, D-I
2. A-I, B-III, C-II, D-IV
3. A-II, B-III, C-I, D-IV
4. A-III, B-I, C-IV, D-II

Match List-I with List-II: Choose the correct answer from the options given below:

1. A-II, B-III, C-IV, D-I
2. A-III, B-II, C-I, D-IV
3. A-I, B-IV, C-III, D-II
4. A-II, B-I, C-III, D-IV

Select the correct statements regarding mechanism of muscle contraction. Choose the most appropriate answer from the options given below:

1. B, C and E only
2. C, D and E only
3. A and D only
4. B, D and E only

Match List I with List II. Choose the correct answer from the options given below:

1. A-II, B-IV, C-I, D-III
2. A-I, B-IV, C-III, D-II
3. A-II, B-IV, C-III, D-I
4. A-III, B-I, C-II, D-IV

Which of the following statements are correct regarding skeletal muscle? Choose the most appropriate answer from the options given below:

1. B and C only
2. A, C and D only
3. C and D only
4. A, B and C only

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 most appropriate answer from the options given below:

1. Both (A) and (R) are correct and (R) is the correct explanation of (A)
2. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
3. (A) is correct but (R) is not correct
4. (A) is not correct but (R) is correct

Which of the following is a correct match for disease and its symptoms?

1. Arthritis - Inflamed joints
2. Tetany - High Ca2+ level causing rapid spasms
3. Myasthenia gravis - Genetic disorder resulting in weakening and paralysis of skeletal muscle
4. Muscular dystrophy - An auto immune disorder causing progressive degeneration of skeletal muscle

According to the sliding filament theory:

1. The actin filaments slide away from A-band resulting in shortening of sarcomere.
2. Actin and myosin filaments slide over each other to increase the length of the sarcomere.
3. Length of A-band does not change
4. I-band increases in length.