Across
- 1. Hormone that regulates the sleep-wake cycle
- 3. Where mechanical vibrations are converted into electrical signals by the Organ of Corti
- 6. Motor protein with projections that attach to actin and pull it to generate force
- 10. Photoreceptor sensitive to low levels of light
- 12. Provides site for a fertilized egg to implant and develop into a fetus
- 13. Type of signaling where hormones are released into the bloodstream and travel long distances to act on target cells
- 16. Process of forming the nervous system
- 17. Carry out spermatogenesis and produce testosterone
- 18. Light-sensitive layer of the eye that contains photoreceptors
- 20. When the outward flow of K+ brings the voltage of a neuron back to the resting negative value
- 22. Bands of connective tissue that attach muscle to bone
Down
- 2. Sequence of communication between two or more endocrine glands
- 4. Section of the brain that handles higher cognitive functions
- 5. External hard covering that surrounds the body and protects tissues
- 7. These diffuse across a synapse, bind to receptors on the postsynaptic membrane, and cause a change to the electrical state of the postsynaptic cell
- 8. Rapid series of mitotic divisions
- 9. Main functional unit of compact bone
- 11. Contractile unit of skeletal muscle
- 14. Rigid connective tissue that forms the human skeleton
- 15. Cells that can only differentiate into one cell-type and self-renew
- 19. Fundamental units of the nervous system that transmit information through electrical and chemical signals
- 21. Carries electrical signals away from the soma toward other neurons, muscle, or glands