Lecture notes
nervous system microanatomy
- Module
- Biology of disease
- Institution
- University Of Wolverhampton
Microanatomy of the nervous system first year.
[Show more]
Seller
Follow
Content preview
GLIAL CELLS- They are support cells
- Include EPENDYMAL CELLS, ASTROCYTES, MICROGLIA in the CNS
- Schwann and satellite cells in the PNS.
GLIA IS DIVIDED INTO 2 CLASSES: Microglia and Macroglia
Microglia: is the primary immune defence of the CNS
- Long extensions called processes.
- In development they release growth factors and remove debris
- In adulthood they sample the micro environment and have a major role in removing
debris
Macroglia: the other glial cells
- Astrocytes: Provide structural support for neurones. Regulate ion concentration,
pH, neurotransmitter levels.
- Then we get oligodendrocytes in the CNS and Schwann cells in the PNS
responsible for covering neurones with myelin (myelination)
Schwann cells electrically insulate axons in
the PNS and they myelinate single axons
whereas oligodendrocytes can myelinate up
to 60 axons.
- Ependymal cells: are
found in the walls of the
ventricles and produce cerebrospinal fluid which protects, washes away
debris and nourishes the CNS.
Their cells have small hairs called CILIA on apical end which move fluid.
Protect the brain from injury
Not epithelial cells as they do not have a basement membrane
- Satellite cells: found in the Peripheral Nervous system and support and protect
neurons.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller rabiahkhan. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81989 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now