Fundamentals of The Nervous System and Nervous Tissue
Across
- 4. Branched cells that are responsible for forming myelin sheaths in nerve fibres in the CNS
- 6. barrier rovides a barrier between the blood in the capillary and the brain.
- 9. The activation of an effector organ, either a muscle or a gland to produce a response.
- 11. These are essentially the immune cells of the nervous system.
- 15. This is responsible for carrying nutrients and aiding in protecting brain cells from injury and helps to cushion them.
- 18. These cells decide what chemicals enter the brain and Nervous System through capillaries.
- 19. These are small helper cells that is found around delicate neurons, wrapping them to provide a suitable environment for the neurons to function.
- 21. These are fatty insulators covering the axons of our neurons to insulate them and propagate action potentials faster
Down
- 1. These surrounds all peripheral nerve fibres and functions just like oligodendrocytes which is to form myelin sheaths in nerve fibres.
- 2. These surround cell bodies and have the same function as astrocytes, which is to maintain the chemical environment and ensure the neuron has all the ions and chemicals it needs
- 3. This is found in the CNS and is what holds all the organelles of the neurons
- 5. The interpretation and processing of the sensory output
- 7. neurones of nueron processes in the PNS
- 8. These cells line the central cavities of the brain and spinal column. They also form a permeable membrane between the cerebrospinal fluid (CSF) in the cavities and tissue fluid bathing CNS cells.
- 10. A cluster on neuron cell bodies in the PNS
- 12. The fight or flight response of the Autonomic nervous system, it increases the heart and respiratory rates
- 13. Bundles of neuron processes in the CNS
- 14. These are excitable cells that transmit electrical impulses or signals. They do most of the work in the Nervous System
- 16. Rest and digestion function of the autonomic nervous system (slows down heart and respiratory rates, and digestive organ increases their functioning )
- 17. A cluster of neuron cell bodies in the CNS
- 20. When your sensory receptors collect or acknowledges either external or internal changes