Hemisection of the brain Flashcards
What kind of fibres pass through them?
Commisural fibres
How many parts are there to the corpus callosum?
4 parts
What is the septum pellucidum?
Thin sheet which lies in the mid sagittal plane and separates the anterior horns of the two lateral ventricles.
What is the septum pellucidum continous with superior?
Corpus callosum
What is the septum pellucidum continous with inferiorly?
Fornix
What si the fornix?
A bundle of fibres which links the hippocampus with the mammillary bodies of the hypothalamus.)
What does the septum pellucidum extend posterior as far as?
Posteriorly as far as the interventricular foramen, the connection between the lateral ventricle on each side and the 3rd ventricle
Identify a bulbous projection on the floor of the lateral ventricle what is this?
Caudate nucleus
What are the basal ganglia?
These are collections of neuronal cell bodies within the cerebral hemisphere.
The term ganglia used in this context is a misnomer. What is the name given to a collection of neuronal cell bodies within the central nervous system?
Nucleus
What is the thalamus?
Sensory relay area made up of smaller masses of gray matter nuclei, each with different functions
Most of the general sensory information from the body relays to a nucleus called the ventro-postero-lateral (VPL) nucleus of the thalamus.
List some of the functions of the hypothalamus.
Releasing Hormones
Regulating Body Temperature
Maintaining Daily Physiological Cycles
Controlling Appetite
Managing Sexual Behaviour
Regulating emotions
Usually in specimens of the brain, the pituitary gland has been cut away because of the presence of a dural fold immediately overlying the pituitary gland.
Name this fold of dura
Diaphragm Sellae
Where are the colliculi (a component of the midbrain) in relation to the pineal gland?
They are just inferior to the pineal gland
