1. What percent of the body is smooth muscle? Striated muscle? 5 to 10 percent, 40.
2. Name 3 types of muscle proteins. What is the function of each? stroma, cellular,contractile. An inert structural element or skeleton to hold the rest of the structures in place, enzymes that are not just found in the muscles but also in other parts of the body, two types myosin and actin and necessary for contraction
3. What is a myofibril? independant element in muscle fibers
4. Sketch a picture of a sarcomere. Label the I-band, the A-band, the Z-line and the H-zone.
5. Name the two filaments that make up a sarcomere. thick and thin
6. Draw a sarcomere at rest, stretched out and contracted.
7. What is the sliding filament theory? During muscle contraction the myofilaments myosin and slide toward each other
8. Muscle relaxation ensues upon the removal of what? calcium ions
2 comments:
The sketches for numbers 4 and 6 need to be your own or at least labeled by you. Also, you are missing number 8.
Great job with corrections!!!
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