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Questions and Answers
What is the characteristic feature of cardiac muscles based on appearance?
What is the characteristic feature of cardiac muscles based on appearance?
- Unstriated
- Branching pattern (correct)
- Involuntary
- Voluntary
What is the function of the sarcoplasmic reticulum in muscle fibres?
What is the function of the sarcoplasmic reticulum in muscle fibres?
- Generation of energy
- Protein synthesis
- Store house of calcium ions (correct)
- Nucleus of the muscle fibre
What gives the striated appearance to myofibrils?
What gives the striated appearance to myofibrils?
- Elastic fibres
- 'M' lines
- Actin and Myosin (correct)
- 'Z' lines
What is the functional unit of contraction in a myofibril called?
What is the functional unit of contraction in a myofibril called?
Why are actin filaments commonly referred to as thin filaments?
Why are actin filaments commonly referred to as thin filaments?
What is the function of flagellar movement in spermatozoa?
What is the function of flagellar movement in spermatozoa?
Which type of muscle is primarily involved in locomotory actions and changes of body postures?
Which type of muscle is primarily involved in locomotory actions and changes of body postures?
What is the special property of muscles that allows them to be stretched without damage?
What is the special property of muscles that allows them to be stretched without damage?
Which type of muscle does not exhibit striation and is located in the inner walls of hollow visceral organs?
Which type of muscle does not exhibit striation and is located in the inner walls of hollow visceral organs?
How are skeletal muscles classified based on the nature of their regulation?
How are skeletal muscles classified based on the nature of their regulation?
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