Unit 2 Nervous System
Across
- 2. also known as sensory neuron, transmits impulses from the receptors to the CNS.
- 3. this type of cell forms fatty myelin sheaths around most axons in the PNs only. Also knows as Neurolemmocytes.
- 7. nervous system that refers to the collection of neurons located throughout the digestive tract
- 8. This structure is a extension of the plasma membrane that increase the surface area available to receive stimuli and transmit stimulation towards the cell body
- 10. smooth muscles, skeletal muscles, glands Oligodendrocytes- produce myelin in the CNS
- 13. two branches of soma
- 17. controls vital processes
- 18. nerve cells that send messages all over the body
- 19. This type of cell lines the ventricles and helps form the choroid plexus
- 22. regulates passage of molecules from blood to the brain
- 23. more than two branches
- 25. a system with rapid activity Endocrine- a system with slow activity
- 26. clusters of brain cells
- 27. one branch of soma
Down
- 1. blank conduction is nerve impulses that jump from node to node as they travel down the axon.
- 4. brain and spinal cord
- 5. This structure connects the cell body to the axon
- 6. This type of cell supports neurons
- 7. also known as motor neuron, transmits impulses from CNS to effectors Microglia- phagocytic cells that migrate throughout the CNS removing debris|
- 9. allows axon to conduct impulses faster
- 11. gap between the axon terminal
- 12. this type of cell supports neuron cell bodies in the ganglia of the PNS
- 14. The nervous system provides control for the ____ activities of the body
- 15. This type of cell ultimately produces Myelin.
- 16. carry impulses from one neuron to another
- 20. nerves
- 21. blank potentials travel the length of the axon, causing the release of neurotransmitters into the synapse. Also known as impulses
- 24. Nodes of blank are gaps between segments of myelin