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34 Cards in this Set
- Front
- Back
The diencephalon is derived from the ___________
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prosencephalon
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The _____________ divides the diencephalon to form the dorsal thalamus (alar &roof plates) and basal plate derived hypothalamus.
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sulcus limitans
(^derivative of hypothalamic sulcus) |
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caudal roof plate of the thalamus develops the
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epiphysis
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epiphysis forms the
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pineal gland
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what makes up the epithamlamus
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pineal gland
haenular nuclei stria medullaris |
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choroid plexus develops from the _____ along with other specialized ependymal areas, cirnumventricular organs
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roof plate
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subthalamic nucleus and zona incerta develop in the posterior diencephalon and are the ?
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subthalamus
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What else develops from the diencephalon?
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The neurohypophysis or posterior lobe of the pituitary and the infundibulum
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what are the divisions of the adult diencephalon
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dorsal thalamus (thalamus)
hypothalamus epithalamus subthalamus |
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the 2 lobes of the thalamus are separated by the
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3rd ventricle
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all sensory information which reaches cerebral cortex except_____ will be processed through the thalamus
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olfaction
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the white matter covering the dorsal thalamus
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statum zonale (red)
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covers the lateral thalamus under the reticular nucleus
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external medullary lamina (green)
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The _________________________ divides the thalamus into primary anterior, medial, lateral and intralaminar groups.
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internal medullary lamina (purple)
(These primary groups are further divided into dorsal ventral and posterior areas) |
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anterior nuclear group borders the
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(ant group= green)
lateral ventricle and at the front of the thalamus |
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what is part of the dorsal tier of the lateral groups
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lateral dorsal (green)
lateral posterior (red) pulvinar (purple) |
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what is part of the ventral tier of the lateral groups
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ventral anterior (purple)
ventral lateral (green) ventral posterior (red) |
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what nuclei are part of the medial group
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dorsomedial nucleus (upper) and a smaller ventromedial nucleus (lower)
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intralaminar nuclei include
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centromendian (red) and parafascicular (green) nuclei
(surrounded by the internal medullary lamina) |
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metathalamus includes the
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medial (yellow) and lateral (red) genculate bodies
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medial geniculate is part of the ______ system
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auditory
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The __________ is a thin sheet of neurons beyond the external medullary lamina adjacent to the internal capsule.
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reticular nucleus
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lateral geniculate is part of the ______ system
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visual
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what primary nucleus of the subthalmus is part of basal ganglia connections and involved in large motor movements?
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subthalmic nucleus (red)
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The other primary subthalmic nuclei, the zona incerta (green) is an extension of the
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reticular formation
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subthalamus area contains basal ganglia projections in the
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prerubral fields of Forel (red)
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Epithalamus contains the
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pineal gland, habenular nuclei and the stria medullaris thalami
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Pineal Gland is associated with
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circadian rhythms
*AND recieves indirect light info |
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Pinealocytes synthesize
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melatonin
(melatonin varies w/ circadian rhythms) |
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habencular nuclei receive basal ganglia information through the
Where do they project to? |
stria medullaris
interpedunclear nucleus of the midbrain |
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What do the habenular nuclei modulate?
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appear to modulate emotional related facial expressions (mimetic expression) among other possible functions.
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what is the arteriole supply to the hypothalamus and subthalamus
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circle of willis with perforating branches
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Most of the thalamus gets its arterole supply from
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posterior cerebral arteries
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Which areas of the thalamus do the thalamoperforating and thalamogeniculate branches of the posterior cerebral arteries supply?
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thalamoperforating- supplies the dorsomedial thalamus
thalamogeniculate- supplies the ventrolateral thalamus |