Muscle Crossword

6. A bundle of structures such as nerve or muscle fibers or conducting vessels
8. A protein in cells that helps with muscle contraction, cell movement, and cell shape
12. a neurotransmitter that carries chemical messages between nerve cells and other cells in the body
15. the ability of a muscle to return to its original length aNeuromuscular junctionor shortened
16. a synapse that connects a motor nerve to a muscle fiber
17. the dense connective tissue that surrounds the entire muscle tissue
18. A thick
19. bundles of protein filaments that contain the contractile elements of the cardiomyocyte
20. A thin layer of connective tissue that surrounds each muscle fiber

1. the fundamental unit of muscle that contracts
2. band in a muscle's sarcomere that contains thick myosin filaments and some thin actin filaments
3. the pale, lighter band in a skeletal muscle fiber
4. the ability of muscle cells to contract or shorten forcefully
5. the ability of a muscle to stretch or lengthen without tearing
7. the ability of muscle cells to respond to stimuli by generating electrical impulses
9. A fibrous connective tissue that attaches muscle to bone.
10. A continuous layer of collagenous connective tissue that separates the skeletal muscle tissue into muscle fascicles
11. a single motor neuron and all the muscle fibers it innervates,
13. separates adjacent I-bands in a muscle cell
14. a central region of the A band in a sarcomere, a contractile unit of skeletal muscle