Nervous system - Lecture Twenty One : Neuroanatomy IV - Meninges and ventricular system
5 important questions on Nervous system - Lecture Twenty One : Neuroanatomy IV - Meninges and ventricular system
Explain the features of the Dura Mater meninge ?
- It is the outermost layer.
- Most dense and fibrous.
- Composed of two layers : Outer (periosteal) layer and the inner(meningeal) layer.
DURL FOLDS :
- Formed from the inner layer.
- Separates major divisions of the brain and provides stability.
DURAL REFLECTIONS :
- Falx Cerebri : separates the cerebral hemispheres.
- Falx Cerebelli : Separates the cerebellar hemispheres.
- Tentorium Cerebelli : Separates the cerebellum from the cerebrum.
VENOUS SINUS : collecting vein which collects venous blood and old "CSF" which has been circulated through the ventricular system.
Explain the features of the Arachnoid meninge ?
- Middle layer
- Contains blood vessels but does not extend into sulci
- Below the arachnoid is the sub-arachnoid space which is filled with CSF
- Has arachnoid granulations which perforate the dura mater and facilitates drainage of old "CSF" into the venous sinus.
Explain the features of the Pia mater meninge ?
- Known as the delicate mother
- Inner layer of the meninges
- Transparent and delicate
- Adheres closely to the brain and can extend into sulci
- Blood vessels in the arachnoid sits on top of it
- Higher grades + faster learning
- Never study anything twice
- 100% sure, 100% understanding
For my 1st exam I got a C. Then, I started looking for ways to learn better and I came across Study Smart. Since then I have scored a A+, A, A- and another A. I highly recommend it to everyone who wants to hear it. I am so happy with it!!
I was struggling to finish all my first-year subjects for 3 years. Then I discovered Study Smart, which helped me to finish all of them within 3 months.
Because of StudySmart, things are going well in many ways. Before, I always had study stress and no time for anything. Now I feel calm and confident (because of the program). I used to score a B, now I usually score an A or A+.
Hey Chris, I really want to thank you very much for developing the platform, I usually got around C for my exams, now I scored an A+, an A and a A- !!
Since using Study Smart, my average has increased significantly. I even completed a statistics course with a A+ while I'm bad at statistics. I took on extra courses this year, because of Study Smart. Thanks so much!
Ever since I started studying with StudySmart I passed all my exams !!! No more re-sits!! At first, I was happy with a pass and now I only get good grades. Many thanks!
I aced all the courses I studied with Study Smart. For law, I first scored a D, and now an A! I’m 100% sure that I’ll pass all the courses I study with Study Smart.
I always thought I studied well. My grades were fine. I could never have imagined that applying these study skills would have such a huge and direct impact on my grades, my speed and the pleasure I have in learning.
For the first time, I finally feel totally confident about the way I learn. I have the perfect overview and make great progress in terms of speed and the grades I get. Thanks, Chris!
I immediately started to enjoy learning again, and my grades soared. All of a sudden, everything went better. I highly recommend Study Smart to all students..
Being able to create my materials online made the process of studying so much smoother and quicker. I no longer have to spend a huge amount of my time on creating my summaries.
At first, my notes were a mess. Now I use Study Smart to take my notes in a perfectly structured way. It helps me to save a lot of time and do other things I enjoy.
Students that study with Study Smart get better grades. The system applies all the learning methods in such a way that both well-performing students and students who struggle perform much better.
Hi Chris, I would like to thank you very much. Last year I scored C on a course, and this year I got an A+ thanks to your method! Thank you very much!
The largest effect is that my child is more enthusiastic about school! Every parent wants their children to be happy at school, Study Smart made it happen.
In high school, I failed several exams, and that has really changed now. I actually needed this tool very much back then. Since I started studying with StudySmart, I haven't had any D's. My average score is now an A and those are results I would have never had in the past
With my old method, I passed only 3 out of 8 courses. Since I started taking my notes digitally in Study Smart, I have passed all my courses on the first try. For me, StudySmart takes away the stress of wondering if I will pass or not.
Thanks to StudySmart, I passed all my exams, and with better grades than before! On top of that, I have mastered a very good study method now, which I am confident will help me earn my degree.
What is the ventricular system and the locations of ventricles?
LOCATION OF VENTRICLES :
- Lateral : One each on both sides of the cerebral hemisphere
- Third : Diencephalon
- Cerebral aqueduct : Midbrain
- Fourth : At the base level of the cerebellum
What is the Cerebrospinal Fluid (CSF) and explain the circulation pathway ?
- Surrounds the CNS
- Provides support and cushions the brain
- Transports nutrients and waste
- Produced by the choroid plexus within the ventricles
CIRCULATION PATHWAY :
- Starts at the lateral ventricles
- Third ventricle
- Cerebral aqueduct
- Fourth ventricle
- Sub-arachnoid space
- Arachnoid granulation
- Exit through the venous sinus
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
