Podcast
Questions and Answers
What is the function of glycogen granules and lipid droplets in the sarcoplasm?
What is the function of glycogen granules and lipid droplets in the sarcoplasm?
- To synthesize proteins for the muscle
- To provide structural support to the myofibril
- To serve as energy sources (correct)
- To regulate the contraction of the muscle
What is the function of the M-line in the sarcomere?
What is the function of the M-line in the sarcomere?
- To connect the thick filaments together in a transverse direction (correct)
- To regulate the contraction of the muscle
- To provide structural support to the myofibril
- To anchor the thin filaments to the z-line
What is the characteristic of cardiac muscle fibers?
What is the characteristic of cardiac muscle fibers?
- They are striated and voluntary
- They are striated and involuntary (correct)
- They are smooth and involuntary
- They are smooth and voluntary
What is the length of the sarcomere?
What is the length of the sarcomere?
What is the function of the sarcoplasmic reticulum?
What is the function of the sarcoplasmic reticulum?
What is the characteristic of the sarcoplasmic reticulum in cardiac muscle cells?
What is the characteristic of the sarcoplasmic reticulum in cardiac muscle cells?
What is the shape of the nucleus in smooth muscle fibers?
What is the shape of the nucleus in smooth muscle fibers?
What is the function of the intercalated discs in cardiac muscle cells?
What is the function of the intercalated discs in cardiac muscle cells?
What is the characteristic of the transverse tubules in cardiac muscle cells?
What is the characteristic of the transverse tubules in cardiac muscle cells?
What is the significance of the caveolae in smooth muscle fibers?
What is the significance of the caveolae in smooth muscle fibers?
What is the characteristic of the nuclei in skeletal muscle fibers?
What is the characteristic of the nuclei in skeletal muscle fibers?
What type of connective tissue surrounds the whole muscle?
What type of connective tissue surrounds the whole muscle?
What is the characteristic of the cytoplasm in skeletal muscle fibers?
What is the characteristic of the cytoplasm in skeletal muscle fibers?
What is the function of the elaborate membrane system around myofibrils in skeletal muscle fibers?
What is the function of the elaborate membrane system around myofibrils in skeletal muscle fibers?
What is the shape of the skeletal muscle fibers in transverse section?
What is the shape of the skeletal muscle fibers in transverse section?