Class notes
Lectures 1-10: all midterm 1 and 2 material
- Course
- Institution
Lecture notes of 34 pages for the course Neur 1203: Neurological Mental Health and Neurological Diseases at CU (Lectures 1-10)
[Show more]
Seller
Follow
JamieMongeon
Reviews received
Content preview
Midterm 1-2 materialLectures 1-10
1: Organization and function of the nervous system
The nervous system: in animals, it coordinates actions by transmitting signals to and from
different parts of its body
● It detects environmental changes
● Responds to such events
● Divided into central nervous system (CNS) and peripheral nervous system (PNS)
1. Cranial nerves
● 12 pairs of nerves that control: afferent functions (sensation to eyes, ears,
mouth and nose) as well as efferent functions (motor control over facial
muscles, tongue and eyes) or both
● Connects the brain and the internal organs, thereby influencing several
autonomic responses
2. Spinal nerves
● Functionally equivalent to the cranial nerves of the head; control and carry
information about the body, trunk and limbs
Somatic nervous system
● Spinal-nerve connection
○ Dorsal fibers: afferent
○ Ventral fibers: efferent
○ Collection of fibers entering/exiting spinal cord segment is called a root
(dorsal root, ventral root)
● Law of Bell and Magendie
○ Dorsal spinal cord is sensory and ventral side is motor
○ Allows inferences about location of spinal cord damage on the basis of
changes in sensation of movement that a patient experiences
Autonomic nervous system
1. Sympathetic division
● Fight or flight
, ● Connected to thoracic and lumbar spinal cord regions
● Spinal cord connects to autonomic control center, made up of glia
2. Parasympathetic division
● Rest and digest
● Connects through cranial nerves: 3 7 10
● Also connected to sacral region of spinal cord
CNS
● Brain
● Spinal cord
○ Vertebrae
■ Segments of the spinal cord
■ Divided into 5 anatomical regions (from top to bottom: cranial, cervical,
thoracic, lumbar, sacral)
○ Dermatomes
■ Segments of the body
■ Each dermatome contains sensory nerve and motor nerves (spinal
nerves)
The spinal cord
● Controls most body movements
● Series of vertebrae, divided into sections
-Cervical (C1 à C8)
-Thoracic (T1 à T12)
-Lumbar (L1 à L5)
-Sacral (S1 à S5)
Can act independently of the brain
● Spinal reflex
● Autonomic movements, hard for the bran to inhibit
Cerebral security: the meninges
● Dura mater (hard mother)
○ Tough, double layered fibrous tissue
○ Encloses brain and spinal cord
● Arachnoid layer (spider layer)
○ Thin sheet of delicate connective tissue
○ Follows the brains contour
● Pia mater (soft mother)
○ Moderately tough membrane of connective tissue
○ Clings to brain surface
Meningitis
● Inflammation of the meninges
● Bacterial infection of the meninges
○ Particularly the pia mater and arachnoid space: csf implicated as well
● Intracranial pressure (ICP)
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 or Stuvia-credit 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 JamieMongeon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $18.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
59063 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now