Deck 2 Flashcards
What is the name of the floor of 4th ventricle?
Rhomboid fossa
What are the names of the outlets of 4th ventricle?
- Foramen of Magendie
- Foramina of Luschka
What is the name of the channel which connects the 3rd and 4th
ventricles?
Cerebral aqueduct.
Name the vital centers of reticular formation?
respiratory and circulatory centers
What is the function of the ventral posteromedial nucleus?
It receives sensory information from the head.
Afferentation: trigeminal lemniscus; solitariothalamic tract.
Efferentation: postcentral gyrus.
Taste projection: insula. Cortical projection of pain: prefrontal cortex.
transmit taste info from the gustatory pathway to somatosensory cortex
What is the function of the ventral posterolateral nucleus?
It receives sensory information from the body except for the head
Afferentation: Medial lemniscus; spinothalamic tract
Efferentation: postcentral gyrus.
receive proprioceptive information - transmits it to somatosensorycortex
What is the function of the ventral anterior and ventral lateral nuclei?
Fine motor control
VA:
Afferentation: globus pallidus, substantia nigra
Efferentation: frontal neocortex (motor and premotor cortex: mainly Br.4)
VL:
Afferentation: globus pallidus, cerebellar nuclei;
Efferentation: premotor cortex (Br. 6)
receives info from globus pallidus and cerebellum for movement coordination to B4
What is the function of the anterior thalamic nuclei?
Parts of the limbic system – emotions, memory, behavioral functions
Afferentation: mammillothalamic tract;
Efferentation: cingulate gyrus
Which thalamic nucleus belongs to the limbic system?
Anterior thalamic nuclei
Name at least three functions of the hypothalamus?
Regulates body temperature by acting as the body’s thermostat.
Controls hunger and thirst through appetite and hydration signals.
Manages hormonal activity by directing the pituitary gland to release essential hormones.
What does the arcuate (infundibular) nucleus produce?
Releasing and Inhibiting Hormones
GHRH, GnRH, TRH, CRH, Dopamine
What do the paraventricular and supra-optic nuclei produce?
Oxytocin & Vasopressin (ADH),
Which hormone does the pineal gland produce?
Melatonin
What is the interpretation of the association fibers?
transmit nerve impulses between gyri in the same hemisphere
What is the interpretation of the commissural fibers
are a type of white matter tract that cross the midline, connecting the same cortical area in opposite hemispheres
example is the corpus callosum
