1. Sponge: Set up Cornell Notes on pg. 17 Topic: 11
Sponge: Set up Cornell Notes on pg. 17 Topic: 11.1 Meninges Essential Question: What is the MAJOR function of the meninges?
Meninges
2.1 Atoms, Ions, and Molecules
What is the MAJOR function of the meninges?

2. The Central Nervous System
Brain –
Lies in the cranial cavity
Includes 100 billion multipolar neurons
Brain stem-
Connects brain and spinal cord
Allows a 2-way communication between brain/spinal cord
Spinal cord-
Lies in the vertebral canal within the vertebral column
Provides a 2-way communication between the CNS and PNS

3. The Curious Case of Phineas Gage

4. Intro to Ch. 11 Divisions of the N.S.
Please read and HIGHLIGHT the opening article of the chapter
Read the timeline of Karen Ann Quinlan
Answer the questions

5. The Curious Case of Phineas Gage 2m7s-4m57s

6. Intro to Ch. 11 Divisions of the N.S.
Discuss your answers with your table
Be prepared to be called on to share your answers.

7. Brain Meninges are the membranes surrounding CNS
Protect the brain and spinal cord
Found between the bone and soft tissue of the nervous system
There are three layers:
Brain

8. Label your picture as we go through the notes
Brain

9. Dura mater – “tough mother”
Outermost layer- double layered
Tough connective tissue
Surrounds the entire brain and spinal cord
Attaches to the inside of the cranial cavity- anchoring the brain skull to limit movement
Forms the internal covering of the skull bones
Continues into the vertebral canal as a strong tubular covering that surrounds the spinal cord
Contains many blood vessels and nerves
Supports and protects the lobes of the brain and spinal cord

10. “think web”= arachnoid
2. Arachnoid mater– “in the image of spider”
Thin middle layer
Made up of loose connective tissue
Has weblike extensions
Lacks blood vessels
Spreads over the brain and spinal cord
Subarachnoid space lies between arachnoid and pia mater which contains the clear watery cerebrospinal fluid or CSF
“think web”= arachnoid

11. “think web”= arachnoid
3. Pia mater– “gentle mother”
Very thin innermost layer
Many nerves and blood vessels
Clings to the brain’s surface
Nourish the underlying cells of the brain and spinal cord
“think web”= arachnoid

12. Figure 11.01a

13. Meninges of the Spinal Cord
Subarachnoid space

14. The Protective Layers of the Brain 2m6s

15. Disorders Associated with the Meninges:
Meningitis: is an inflammation of the meninges
Caused by Bacteria OR viruses that invade the cerebrospinal fluid
Commonly limited to the arachnoid and pia maters
Most often in infants and children
Complications: loss of vision, loss of hearing, paralysis and mental retardation. May be FATAL

16. The Signs and Symptoms of Meningitis 3m31

17. Use computers to research 15 minutes
Types of Meningitis
Bacterial Viral Fungal Encephalitis (bite)
How do you get it?
Symptoms
Who is at most risk (age)?
Treatment/medicine?
Use computers to research
15 minutes
WebMD/ MayoClinic/ MedicinePlus / CDC

18. GET OUT HOMEWORK FOR SIGNATURE
P. 16
Types of Meningitis
Bacterial Viral Fungal Encephalitis (bite)
How do you get it?
Symptoms
Who is at most risk (age)?
Treatment/medicine?
GET OUT HOMEWORK FOR SIGNATURE

19. Meningitis Video Notes
Please add at least 3 bullets per video to your tree-map on p. 16
How do you get it?
Symptoms
Who is at most risk (age)?
Treatment/medicine?

20. Meningitis Video Notes
Viral Meningitis 4m
Bacterial Meningitis
5 m

21. Meningitis Video Notes
Fungal Meningitis (Valley Fever) 2m28s
Managing Meningitis
2m21s

22. Subdural hematoma: when a blow to the head ruptures blood vessels associated with the brain
Escaping blood collects between the dura mater and arachnoid mater
Increases pressure between the bones of the skull and the soft tissues of the brain
Will lead to functional losses or even DEATH if not drained

23. Subdural hematoma 1m9s

24. Craniotomy/Craniectomy 5m48s