1.3 Organization of The Brain Flashcards
What is the Meninges?
- connective tissues between the brain and skull
- Help to keep the brain on the skull
- Nourishes the brain
Dura Matter:
connective tissue between the skull and the brain
Arachnoid Matter:
Middle connective tissue
Pia Matter:
tissue directly connecting to the brain
What does Cerebral Spinal Fluid Do?
- nourish the brain
- cells produce this in the ventral cavity
What are the three different parts of your brain?
- Hind brain
- Midbrain
- forebrain
Which ones came first and how do you know?
- Hind brain and Midbrain
- Position in the head
What are the prenatal parts of the brain and how did they come about?
-Parts created during development that started with three lumps and the hind brain and forebrain split again so five parts
Prenatal Hindbrain?
- rhombocephalon
- myselphalon: Made the medulla oblongata
- metacephalon: Pons and cerebellum
What is the medulla oblongata?
-The main part of brain responsible for breathing heart rate and life
What is the Pons?
- Connection system for the medulla
- uses sensory and motor neurons
Cerebellum?
- deals with balance, coordination and speech
- First to go when you are drunk
Prenatal Midbrain?
- takes in sensory information from rest of the body
- Involuntary Sight and sound stimuli
- mesencephalon
How does the involuntary sight and sound work?
colliculi has both superior and inferior parts of the brain
Prenatal Forebrain?
- Dicephelon: hypothalamus, pineal gland,thalmus, pituitary gland
- telecephalon: Cerebral cortex and limbic system
- high order thinking and emotions
What is Neuropsychology?
The study of putting together behavior and functioning of the brain
What are the pros and cons of lesions?
- Lesions can tell you where something is going wrong
- Hard to tell the function because they spread
- Ablation on mice brains helps though
What are Cortical Maps?
-When performing brain surgery doctors stimulate different parts of the brain to know what they do
Electroencephalogram (EEG)
-Connects sensors on the scalp to see how a group of neurons functions
Regional Cerebral Bloodflow (RcB)
Sniff a radioactive element
The blood will be tracked as it moves to the active regions of the brain
Compute tomography/ Computed Axial Tomography
-x-rays of the brain that give cross sectional tissue image
Position Emission tomography scan
Radiocctive element taken through sugar and target tissue is imaged
Magnetic Resonance Imaging
Look at the hydrogen density regions of the brain using the magnetic field
Functional Magnetic Resonance Imaging
same as above but with blood flow
