Select the correct match for the parts labeled as A, B, C and D in the given diagram of a sarcomere:
 
A B C D
1. I band A band H zone M line
2. I band H zone M line Z line
3. A band I band Z line M line
4. H zone I band M line Z line

Subtopic:  Skeletal Muscle: Sarcomere |
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The dark and light bands seen as striations in a skeletal muscle are located on:

1. Myofilaments 2. Muscle fiber
3. Myofibril 4. Motor unit
Subtopic:  Skeletal Muscle: Sarcomere |
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The central part of the thick filaments not overlapped by the thin filaments is called as:

1. A band 2. I band
3. H zone 4. Sarcomere
Subtopic:  Skeletal Muscle: Sarcomere |
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The correct statement regarding myofibril would be:

1. It is the name for a muscle cell.

2. It contains sarcoplasmic reticulum.

3. It is made up of many sarcomeres.

4. It is a bundle of muscle cells.

Subtopic:  Skeletal Muscle: Sarcomere |
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The Z line is present in:

1. A band 2. H zone
3. I band 4. M line
Subtopic:  Skeletal Muscle: Sarcomere |
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The part of the sarcomere that is composed of only myosin myofilaments is:

1. A band 2. I band
3. M line 4. H zone
Subtopic:  Skeletal Muscle: Sarcomere |
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Identify the incorrect statement regarding a sarcomere:
1. Anisotropic band mainly contains myosin.
2. Isotropic band consists of actin.
3. The thick filaments are held together by an M-line.
4. Actin and myosin are arranged perpendicular to each other and also to the longitudinal axis of myofibrils.
Subtopic:  Skeletal Muscle: Sarcomere |
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Consider the following two statements:
Statement I:  Red fibres are ‘red’ due to large amount of myoglobin.
Statement II:  Red muscles are also called as aerobic muscles.
 
1. Both Statement I and Statement II are correct and Statement II explains Statement I
2. Both Statement I and Statement II are correct but Statement II does not explain Statement I
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic:  Skeletal Muscle: Sarcomere |
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