Nervous System

3. Dense fibrous tissue structure surrounding an entire peripheral nerve.
5. Phagocytic immune cells of the CNS.
7. Outer layer of myelin sheath in the PNS containing Schwann cell cytoplasm.
9. Neuron type with one axon and one dendrite, often seen in the retina.
10. cells, Glial cells responsible for myelination in the PNS.
12. Star-shaped glial cells involved in the blood-brain barrier.
13. Glial cell that lines ventricles and helps circulate cerebrospinal fluid.
14. violet, Histological stain commonly used to highlight Nissl bodies.
16. cells, Large pyramidal neurons located in layer V of the motor cortex.
17. layer, Layer of the cerebral cortex primarily containing granular cells.
18. Bundles of axons within the CNS.
20. substance, Aggregates of rough endoplasmic reticulum in neurons.

1. of Ranvier, Gap in the myelin sheath facilitating saltatory conduction.
2. Cell type responsible for myelination in the CNS.
4. Type of axonal transport that moves materials toward the cell body.
6. Specialized connective tissue covering individual nerve fibers.
8. Specialized junction where communication between neurons occurs.
11. synapse, Type of synapse where neurotransmitters cross a narrow cleft.
15. – Basic structural and functional unit of the nervous system.
19. hillock, Specialized region of the neuron where an action potential is initiated.