Components and thalamic nuclei classification Flashcards
What are the components of diencephalon
T
H
E
S
Thalamus is __________ that is located in the
Paired medially placed egg shaped
Located lateral to the 3rd ventricle
Thalamus receives information from
Cortical and subcorticsl structures
Function of the thalamus
Sensory inputs are relayed to the cortex through the thalamus
Output to the cortex from the cerebellum and basal ganglia relays through the thalamus
It relays limbic input to the cortex
Thalamus is a gateway of all sensory inputs to the cortex except for which
Olfactory
Mention the classification of thalamic nuclie
Note 4 and 1 relative
Ant
Me
La
Intra
A relative made up of
- Metathalamic nuclear group
- Thalamic reticular nucleus
Lateral nuclei group is divided into
- Ventral nuclear group
2. Dorsal group
The ventral nuclear group of the lateral nuvlie group has 3 divisions
- Ventral anterior nucleus
- Ventral lateral
3.Ventral posterior; Ventral posterelateral nuc
Ventral postmedial nuc
Ventral post inferior nuc
The dorsal division of the lateral nuclear group is
Lateral dorsal
Lateral posterior
Pulvinar
The pulvinar is what
Visual association area
The medial nuclei group has 2 divisions
Dordo medial nucleus
Dorsal nucleus
The midline nuclei group is also known as——–
It has 4 divisions namely
Intralamina nuclei group
Paratenial nucleus
Reunience nuc
Rhomboid nuc
Submedial nuc
The anterior nuclei group has 3 nuclei——–
They are collectively called
Anterior ventral AV
anterior dorsal. AD
anterior medial AM
ANTERIOR Nucleus
Metathalamic nuclear group is divided into
1.Medial geniculate nucleus
Ventral nucleus MGv
dorsal nucleus MGd
Medial nucleus MGm
2.Lateral geniculate nucleus
Dorsal and ventralThe intralaminar nuclear group has 2 divisions namely
- Roastral IL nucleus
2. Cadual IL nucleus
Mention the sensory nuclei and their functions
VPL=somatic sensation for contralateral body
VPM= somatic sensation for contralateral face and taste
Medial geniculate nucleus= hearing
Lateral geniculate nucleus= Vision
Pulvinar= vision processing
Mention the motor nuclei and their functions
Ventrolateral= modulate and coordinate movt
Ventral anterior= initiate and planing of movement
Ventro inter medial =coordinate movement
Hypothalamus is located———-
It extends from ——-
It is located below the hypothalamic sulcus and thalamus
Optic chiasma to mamilary bodies
The limbic and non specific projection nuclie functions are
Anterior nucleus=memory storage and emotions
Mediodorsal= motivation ,drive and emotions
Centromedian= emotional content of pain
What is the function of the hypothalamus
It maintains homeostasis by regulating 3 functions
- Endocrine secretion
- Autonomic function
- Emotions and drives
What is the function of the hypothalamus
It maintains homeostasis by regulating 3 functions
- Endocrine secretion
- Autonomic function
- Emotions and drives
The hypothalamus has 3 basic subdivisions
Supraoptic region
Tuberal region
Mamillary region
Supraotic region is most important in _______
Lies above __________
Veterinary medicine
Optic chiasm
The supraoptic region has 3 nuclei namely
Supraoptic nuc
Suprachiasmatic
Paraventricular
What nucleus controls circadian rhythms
Suprachiasmatic nuc
What nucleus secrete oxytocin
P
What nucleus secrete ADH or vasopressin
Explain the pathway
Supraoptic nucleus
The tuberal region cells secrete_________
The secretion controls_________
The nuclei of this region are
Orexin or hypocretins
Various aspect of sleep
Ventrimedial, dorsimedial, premammillary, arcuate and lateral tuberal
Mamillary bodies of the mamillary region is important for
The nucleus of this region are
Memory and learning
Tuberomamillary nuc and posterior nuclues
