5 Written Questions

1. Bundle of muscle fiber
2. boundary between each sarcomere
3. bundle of myofilaments
4. Connective tissue fibers that divide the skeletal muscle into fascicles
5. area containing thick filaments

5 Matching Questions

1. thin filament
2. Endomysium
3. T Tubules
4. troponin
5. sarcomere

1. a molecules that hold tropomyosin strands in place
2. b smallest functional unit of muscle fiber made of myofilaments
3. c myofilament made of ACTIN
4. d passageways on sarcolemma that help contract muscles
5. e Surrounds each muscle fiber, ties adjacent muscle fibers together within fascicles

5 Multiple Choice Questions

1. cell membrane of a muscle fiber
   1. Sarcolemma
   2. sarcomere
   3. Fascicle
   4. Sarcoplasm
2. Bundles of collagen fiber that attach muscles to bones
   1. Tendon
   2. M line
   3. troponin
   4. I band
3. explanation for sarcomere contraction
   1. myofilaments
   2. thick filament
   3. thin filament
   4. sliding filament theory
4. myofilament made of MYOSIN
   1. myofilaments
   2. thin filament
   3. thick filament
   4. I band
5. Smooth ER of muscle fiber
   1. Sarcolemma
   2. sarcoplasmic reticulum
   3. sarcomere
   4. Sarcoplasm

5 True/False Questions

1. I band → area containing thick filaments

   True        False

2. Epimysium → Layer of fibers that covers muscle, separates it from surrounding tissues and organs.

   True        False

3. Sarcoplasm → cytoplasm of muscle fiber

   True        False

4. cross-bridges → myosin heads after they bind onto think filaments' active sites

   True        False

5. M line → boundary between each sarcomere

   True        False