The Brain Flashcards
Which structure do the 2 cerebral hemispheres communicate via?
Corpus callosum
What structure sits in the lateral fissure?
Middle cerebral artery
What does the central sulcus separate?
Frontal and parietal lobes
The motor cortex is anterior to the central sulcus.
True or false?
True
Sensory = posterior
Where is the visual cortex?
Occipital lobe
Where is the auditory cortex?
Temporal lobe
What makes up the diencephalon?
Thalamus
Hypothalamus
Pineal gland
What are superior and inferior colliculi?
2 visible structures of midbrain that are associated with visual and auditory systems
Which cerebellar peduncle communicates with which part of the brain?
Superior - Midbrain
Middle - Pons
Inferior - Medulla
Which cranial nerves originate form medulla?
CN IX, X, XI,, XII and cochlear part of VIII
What is the action of the medullary olives?
Proprioception
Action of the pons?
Co-ordination, voluntary motor output
Action of medulla
Motor tracts (Pyramids) CV and breathing centres Sensory centres (touch)
Action of cerebellum?
Movement and balance
Which area does the posterior cerebral artery supply?
Occipital lobe and base of brain
Which area does the anterior cerebral artery supply?
Frontal and parietal lobes
Which are does the middle cerebral artery supply?
Temporal lobes
Describe the dura meninges
Outer tough layer
Forms dural venous sinuses
Describe the arachnoid meninges
Middle layer
Spiderweb projections
Covers brain surface and carries blood vessels
Describe the Pia meninges
Innermost layer
Sticks to surface of sulci and gyri
Which vessels supply the meninges and where do they originate from?
Meningeal arteries
Anterior - ethmoid from ICA
Middle - Maxillary
Posterior - Occipital
Which is the major vessel supplying the dura?
Middle meningeal
Which nerves supply the dura?
Branches of CNV1-3
What connects 3rd and 4th ventricles?
Cerebral aqueduct
Connects lateral and 3rd ventricles?
Interventricular foramina (Foramina of munro)
