The H Zone in a sarcomere is:
1. a band where only actin molecules are found
2. a band where only myosin molecules are found
3. an attachment point for actin molecules
4. an attachment point for myosin molecules
Subtopic:  Skeletal Muscle: Sarcomere |
 82%
Level 1: 80%+
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Consider the given two statements:
Statement I: Each actin (thin) filament is made of two ‘F’ (filamentous) actins helically wound to each other.
Statement II: Each ‘F’ actin is a polymer of monomeric ‘G’ (Globular) actins.
 
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic:  Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Myofilaments | Skeletal Muscle: Sarcomere |
 92%
Level 1: 80%+
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Consider the given two statements:      
I: The unit in a myofibril from Z line to Z line is a sarcomere.
II: A muscle motor unit includes one motor nerve fiber and all the muscle fibers innervated by it.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Myofilaments | Skeletal Muscle: Sarcomere |
 79%
Level 2: 60%+
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