Notes on Nervous Tissue

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Axonal transport:

• Anterograde (away from nucleus) by kinesins.

• Retrograde (toward the nucleus) by dyneins.

Multiple sclerosis:

Oligodendrocytes (in CNS) degenerated.

Mysthenia graves:

Immune attack on ACh receptors. Give AChE inhibitors.

Neuroglia:

Astrocytes:

• Blood-brain barrier.

Oligodendrocytes:

• CNS myelination.

Microglia:

• Phagocytosis.

Ependymal cells:

• CSF movements in ventricles.

Schwann cells:

• PNS myelination.

Additional Notes:

• Satellite cells: derived from neural crest cells.

• Schwann cells: derived from neural crest cells.

• Bipolar neuron example: spinal ganglion cell.

• Glial fibrillary acidic protein: astrocytes.

• Astrocytes: confine CNS neurotransmitters; regulate metabolism.

• Microglia: originate from bone marrow.

Additional Reading:

Histology and Cytology

1. Cell Components
2. Nervous Tissue
3. Muscle Tissue
4. Lymphoid Tissue
5. Integument
6. Respiratory System
7. Gastrointestinal System
8. Renal/Urinary System
9. Male Reproductive System
10. Female Reproductive System

Gross Anatomy

1. Back and Nervous System
2. Thorax
3. Abdomen, Pelvis, and Perineum
4. Upper Limb
5. Lower Limb
6. Head and Neck
7. Chest Wall
8. Shoulder

Anatomy Videos

1. Video of Musculoskeletal Examination in a Clinical Setting
1. Video of HEENT Examination in a Clinical Setting

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1. Jugular Venous Distention Workup

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