1. Lab Session 9: Nerve Tissue 9.2.05

2. 400x Slide # 7 NH: Spinal (sensory) Ganglion (LFB-NR) 100x Pseudounipolar neurons Satellite cells Nissl granules (RER) Myelinated axons CT layer Segregated cell bodies

3. 400x Slide # 7 NH: Spinal (sensory) Ganglion (LFB-NR) Large Pseudounipolar neuron Satellite cells Myelinated axons Form a continuous layer around the cell bodies A type of glial cell; isolates neurons from surrounding environment 400x

4. Slide #9 NH Sympathetic motor ganglion- rat (LFB-NR) Multipolar neurons (>1 dendrite) Small cell bodies with small eccentric nucleus Few if any myelinated axons Abundant synapses at cell body Cell bodies are not segregated from axons and dendrites 100x

5. Multipolar neurons (>1 dendrite) Small cell bodies with small eccentric nucleus Few if any myelinated axons Abundant synapses at cell body Cell bodies are not segregated from axons and dendrites dendrites Small, multipolar neuron Slide #10 NH Sympathetic motor ganglion- rat (LFB-NR)

6. Slide # 62: Nerve- monkey (osmic acid and nuclear red stain) 100x 400x Schwann cells, myelin sheaths of axons, and adipocytes all stain dark adipocytes Longitudinal section Nodes of Ranvier

7. Slide # 62: Nerve- monkey (osmic acid and nuclear red stain) 400x Cross-section endonerium perineurium epineurium Note the 3 types of connective tissue layers associated with nerves Myelin sheaths appear empty due to lack of axon staining

8. Slide #79 Esophagus Human (H&E) Parasympathetic Ganglia Embedded between longitudinal and circular layers Yusef Sayeed, M.P.H., M.Eng., E.I.T.

9. Slide #93 Colon-Monkey (H&E 40x 10x Parasympathetic ganglion cell body Inner circular m. Outer Longitudinal m. Nerve Fibers

10. Slide #63 Nerve Human (H&E) Note the whorled appearance of nerve fibers See gaps in the myelin sheaths to increase conduction velocity in many peripheral nerves Yusef Sayeed, M.P.H., M.Eng., E.I.T

11. Slide #63 Nerve-Human (H&E) 10x Peripheral Nerve Bundle Blood Vessel Nerve Fibers Epineurium Perineurium Endoneurium

12. Slide #64 Nerve-Human (Masson’s Trichrome) Perineurium Epineurium Endoneurium (CT Surrounding individual Nerve fibers) 10x Peripheral Nerve Bundle

13. Slide #1 Spinal Cord-dog (LFB,NR) Gray Matter White Matter Central Canal lined with ependymal cells 40x Nucleolus (owl’s eye nucleus) Axon Axon Hillock Nissl Substance (Pink Stuff)

14. Slide #2 Spinal Cord-dog (Bielschowsky) Neuron Cell Bodies 4x 10x White Matter Gray Matter Dark staining Neurofilaments

15. Slide #3(NH): Spinal cord – dog (Golgi) Nodes of Ranvier Axon Fibrous Astrocyte 10x 40x

16. Slide #21(NH): Spinal cord – rabbit (Del Rio Hortega) Nucleus 10x 40x

17. Slide #22(NH): Brainstem – rabbit (Cajal) Extending Processes Note: capillaries and blood-brain barrier 40x

18. Slide #30(NH): Cerebellum – dog (Bodian) White Matter Gray Matter *Reverse arrangement from spinal cord 4x