Across
- 3. skeletal muscle fibers are made up of tiny rods, as pictured in figure 5, called
- 8. in order for muscles to contract, they need calcium ions. Muscle cells have an organelle that stores the needed calcium ions. This organelle is called
- 9. Lactic acid, a byproduct of cellular respiration, is typically produced during __________respiration
- 11. Which of the following muscles consists of intercalated discs.
- 14. Thick Filament is made up of ____________.
- 15. Sphincter muscles consist of which arrangement of fascicles
- 17. the unit responsible for skeletal muscle contraction, which repeats in segments within the myofibril, is called
- 18. The layer of connective tissue that surrounds the entire skeletal muscle organ, as pictured in figure 1, is called
Down
- 1. The connective tissue that surrounds the individual skeletal muscle fibers, as pictured in figure 4, is called
- 2. When muscle contracts upon stimulation, calcium ions bind to __________, which exposes the binding sites for the myosin cross‐bridges to attach to
- 4. ATP can be made in muscles from stored glucose. In muscles, glucose is stored in the form of __________
- 5. The connective tissue surrounding each fascicle, as pictured in figure 3, is called
- 6. The origin is the point of muscle attachment that is __________
- 7. Skeletal muscle fibers are also surrounded by a cell membrane called
- 8. Skeletal muscle fibers contain __________, which are light and dark bands (or stripes)
- 10. A bundle of several skeletal muscle fibers, as pictured in figure 2, is called
- 12. A __________ neuron releases the neurotransmitter that initiates skeletal muscle
- 13. What is the zigzag portion called that forms the boundary ends of each sarcomere.
- 16. the troponin/tropomyosin complex is associated directly with which of the following filaments