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Questions and Answers
What is the functional contractile unit of a myofibril?
What is the functional contractile unit of a myofibril?
- A-band
- Sarcomere (correct)
- I-band
- Z-line
Which organelle is abundantly found in the sarcoplasm of skeletal muscle fibers?
Which organelle is abundantly found in the sarcoplasm of skeletal muscle fibers?
- Lysosomes
- Centrioles
- Golgi apparatus
- Smooth endoplasmic reticulum (correct)
What gives rise to the dark areas known as Cohnheim's areas in the sarcoplasm?
What gives rise to the dark areas known as Cohnheim's areas in the sarcoplasm?
- Glycogen granules
- Ribosomes
- Mitochondria
- Myofibrils (correct)
Which component of the myofibril is responsible for the cross striation seen by light microscopy?
Which component of the myofibril is responsible for the cross striation seen by light microscopy?
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What type of muscle fiber is described as having peripherally situated nuclei?
What type of muscle fiber is described as having peripherally situated nuclei?
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Which pigment is commonly found in the sarcoplasm of skeletal muscle fibers?
Which pigment is commonly found in the sarcoplasm of skeletal muscle fibers?
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