Brain (Lec 19) Flashcards
Regions of the brain
- Cerebrum
- Cerebellum
- Diencephalon (hypothalamus/thalamus)
- Brain stem
Blood brain barrier’s significance
Body guard for substances into brain
- only allows certain substances to pass into brain tissue
- wraps around vessels that carry blood to brain
Ventricles of the brain
4 Chambers within the brain - lateral ventricles (2) (Within Cerebral hemispheres) - third ventricle (Within Diencephalon) - fourth ventricle (Between Brain stem & Cerebellum)
Functions of Cerebrospinal fluid (CSF)
- physically supports the brain (floats in this fluid)
- cushion for nervous tissue
- maintains ionic environment
- transport/exchange of nutrients/wastes
Describe the Meninges of the brain (and spinal cord)
3 layers of connective tissue surrounding brain& spinal cord
- Dura mater
- Arachnoid mater
- Apia mater
- provide physical stability & shock absorption
What is A
Diencephalon (thalamus/hypothalamus)
Fluid filled sac
What is B
Brain stem
What is C
Cerebellum (looks like bell pepper)
What is D
Cerebrum
What is E
Midbrain
What is F
Pons
What is G
Medulla Oblongata
What is A
Longitudinal fissure
What is B
Corpus Callosum
What divides the cerebrum into left and right hemispheres
Longitudinal fissure
What does the corpus callosum do
- largest of the commissural tracts
- axons transmits signals between the left and right hemispheres