thalamus Flashcards
what is the function of the lateral group of thalamic nuclei
integrates sensory information and influences emotional states
what is the function of the ventral group of thalamic nuclei
projects sensory information to the primary sensory cortex
relays information from cerebellum and basal nuclei to motor area of cerebral cortex
where is the subthalamic nucleus
located in the ventrolateral part of the subthalamus immediately medial to the internal capsule it has the shape of a biconvex lens in coronal section.
what does the posterior cerebral artery give rise to
posterior choroidal arteries and posterior thalamoperforating arteries
what is the function of the medial group of thalamic nuclei
integrates sensory information for projection to the frontal lobes
what nuclei are part of the posterior group of thalamic nuclei
pulvinar, lateral and medial geniculate nuclei
what is the inferior surface of the thalamus
the subthalamus and hypothalamus
what is the lateral surface of the thalamus
the caudate nucleua, thalamostriate vein and the stria terminalis nerve fiber bundle
what is the epithalamus
small part of the diencephalon that consists of the pineal gland and the habenula
what are the 5 main thalamic nuclei groups
anterior, medial, posterior, lateral, ventral
what is the function of the anterior group of thalamic nuclei
part of limbic system
where are intralaminar nuclei found
the Internal medullary lamina.
what is the function of the subthalamic nucleus
connections with the globus pallidus and the substantia nigra and is important in the control of movement.
where do thalamic nuclei project
to ipsilateral cerebral coretx (except the reticular nucelus)
what is in the External/lateral medullary lamina
consists of thalamocortical and corticothalamic fibres
what is the internal medullary lamina
located a thin layer of nerve fibres composed of some of the afferent and efferent connections of thalamic nuclei
what is the tuber cinereum
a hollow eminence between chiasm and hypothalamus
what is the zona incerta
a rostral extension of the brainstem reticular formation.
what does the posterior communicating artery give rise to
anterior thalamoperforating arteries
In most individuals the two thalami are joined across the thin slit of the ventricle by the ________
interthalamic adhesion or Massa intermedia.
what are the 2 notable cell groups in the subthalamus
the subthalamic nucleus and the zona inserter.
what arteries supply the thalamus
posterior communicating artery
posterior cerebral artery
anteriochoroidal artery
what forms the lateral wall of the 3rd ventricle
thalamus and hypothalamus
what is the function of the pulvinar nuclei
integrates sesnory information for projection to association areas of cerebral cortex
what is the habenula
It serves autonomic function and emotive decision making.
has connections with the limbic system.
what is the function of the internal medullary lamina
provides the basis for dividing the main part of the thalamus into three nuclear masses; anterior, medial and lateral.
what is the function of the thalamus
relay between subcortical areas and cortex
all sensory systems except olfactory nucleus connect to a nucleus in the thalamus
what is the pineal gland
an endocrine organ that synthesizes melatonin and is important in the control of sleep waking cycle and in the regulation of puberty onset.
where does the reticular nucleus project
receives inputs from other thalamic nuclei and the cerebral cortex and sends out projections that circle back to the thalamus.
