Flashcards in Gross Anatomy Deck (65):
The medial geniculate body gets input from the ___ and is involved with ___
What does the epithalamus include?
What are habenular nuclei?
collection of nuclei at the base of pineal body
What is the role of the pineal body?
Cortex is smooth at __ months and has infoldings at __ months
What is the function of the insula?
Are fibres in the internal capsule crossed or uncrossed?
What is another name for the interventricular foramen?
foramen of Munro
What is non-communicating hydrocephalus?
channels that would normally communicate with each other cannot because they are occluded
What cavity is associated with: spinal cord, medulla&pons, mesencephalon, diencephalon, telencephalon (hemispheres)?
spinal cord - central canal
medulla & pons - IVth ventricle
mesencephlon - cerebral aqueduct
diencephalon - IIIrd ventricle
telecephalon - lateral ventricles
The subarachnoid space exists between which meninges?
pia mater and arachnoid
How do vertebral arteries and internal carotid arteries enter the skull?
vertebral - foramen magnum
internal carotids - carotid canal
Which arteries are part of the carotid system?
anterior cerebral arteries
anterior communicating arteries
middle cerebral arteries
small anterior choroidal arteries
posterior communicating arterise
Which arteries connect the carotid system to the vertebral-basilar system?
posterior communciating arteries
Which arteries are part of the vertebral-basilar system?
posterior cerebral artery
superior cerebellar artery
anterior inferior cerebellar artery
posterior inferior cerebellar artery
anterior and posterior spinal
What are the branches of the basilar artery?
posterior cerebral and posterior choroidal arteries
superior cerebellar arteries
pontine and labyrinthe arteries
anterior inferior cerebellar arteries
What are the branches of the vertebral arteries?
posterior inferior cerebellar arteries
anterior and posterior spinal arteries
What area is supplied by the superior cerebellar artery?
upper surface cerebellum
What area is supplied by pontine branches?
inferior surface of pons
What area is supplied by anterior inferior cerebellar artery?
anterior inferior cerebellum
What area is supplied by the posterior inferior cerebellar arteries?
posterior margins of cerebellum
lateral surface of medulla
choroid plexus of fourth ventricle
What are the groups of central/penetrating/ganglionic arteries that arise from the circle of Willis?
anterolateral group (leticulostriate)
Draw where the different groups of central arteries come off the Circle of Willis
What does the anteromedial group supply
What does the anterolateral (leticulostriate) group supply? What would a lesion here imply?
What does the posteriormedial group suply
parts of medial midbrain
What does the posterolateral group supply
posterior thalamus, tectum and some lateral portions of the midbain
Where does the posterior choroidal artery branch from? What does it supply?
posterior cerebral artery
provides oxygen to the body of the lateral ventricles and with choroid plexus of the third ventricle
Where does the labyrinthe artery go?
What structures are included in the diencephalon?
thalamus, epithalamus, hypothalamus, subthalamus
What are the two regions of grey matter in the cerebral hemispheres?
What does the anterior choroidal artery supply?
choroid plexus, inferior horn of lateral ventricle, also has thalamus & midbrain branches
What does the middle cerebral artery supply? Stroke here produces what effect?
supplies primary motor and primary sensory cortex of both hemispheres; lateral surfaces of frontal, parietal, anterior occipital and upper two gyri of temporal lobes
stroke = contralateral UMN paralysis
What does the anterior cerebral artery supply?
Supply medial surface of the frontal and parietal lobes
What does the posterior cerebral artery supply?
Medial surface of occipital lobe
What artery supplies visual cortex directly? What would an infarct in this area cause?
blindness in contralateral visual field
What arteries are included in the circle of willis?
anterior cerebral arteries
anterior communicating artery
internal carotid arteries
posterior communicating arteries
posterior cerebral arteries
What is the commonest artery that may be missing in the Circle of Willis?
posterior communicating artery
Draw the branches of the aorta and include: left subclavian artery, left common carotid artery, brachiocephalic trunk, right common carotid artery, right subclavian artery, vertebral artery, right internal and external carotid artery
What type of fibres are in the corpus callosum?
What structures are known collectively as the "limbic lobe"?
What structure separates the anterior horns of the two lateral ventricles from one another?
What divides hypothalamus from thalamus?
Mammillary bodies receive input from the ___ via the ___
limbic lobe via fornix
What is the function of CN IX ?
general and taste sens from posterior 1/3rd of tongue
motor innervation of stylopharyngeus
The vagal trigone overlies what
The hypoglossal trigone overlies what
What is underneath the facial colliculus?
genu of the facial nerve
What nerves arise from the ponto-medullary junction?
VI, VII, VIII
Where is the vestibular area?
floor of the fourth ventricle lateral to facial colliculus
The vestibular area overlies what
location of vestibular nuclei
What is the major function of the frontal lobe?
what is the major function of the pre-frontal area?
formulate plan of action
what is the primary motor cortex?
what is the primary sensory cortex?
What is the function of occipital lobe
procession visual information
What is the function of the temporal lobe
What is the function of the insular cortex
Primary visual cortex is located on either side of what sulcus?
Where does the uncus receive input
olfactory input & input from lateral olfactory stria
Axons of the anterior commissure connect
Axons of the posterior commissure mediate
reflexes associated with pupillary constriction
What are three functions of the hypothalamus
What is the function of the superior colliculi
mediates visual reflexes