Across
- 3. neurotransmitter for skeletal contractions
- 5. chemicals released at the synapse
- 8. layers of dense connective tissue separates muscles
- 11. broad fibrous sheets of connective tissue
- 12. what thin filaments are made of
Down
- 1. pigment that causes redbrown color of muscle
- 2. type of neurons that control effectors
- 4. pigment responsible for bloods red color
- 6. space between individual neurons
- 7. enzyme contained in the myosin heads
- 9. what thick filaments are made of
- 10. one of the proteins that makes up actin filaments