CNS part 3 Flashcards
what connects the spinal cord and brain stem
MO
3 nuclei in MO functions
- relay centers for sensory or motor pathways
- associated with cranial nerves connected to MO
- associated with autonomic control of visceral organs
what are the relay stations of the MO
gracile nucleus and cuneate nucleus
solitary nucleus
olivary nucleus
function of gracile nucleus and cuneate nucleus
pass somatic sensory information to the thalamus
function of solitary nucleus
gets visceral sensation from spinal nerves and cranial nerves
olivary nuclei function
pass information from cerebrum, spinal cord, diencephalon, and brainstem to cerebellum
autonomic nuclei of reflex centers recieve input frm
cranial nerves, cerebral cortex, diencephalon, and brainstem
major reflex centers of the MO include
CV centers
respiratory rhythmic centers
cranial nerves associated with MO
sensory and motor nuclei
8, 9, 10, 11, 12
is pons above or below the MO
above
what does the pons consist of
sensory and motor nuclei for cranial nerves V, VI, VII, and VIII
nuclei involved in involuntary control of breathing
nuclei that relay cerebellar commands
ascending, descending, and transverse tracts
nuclei involved in breathing in the pons consist of
apneustic center and pneumotaxic center
mesencephalon consists of 2 pairs of nuclei collectively called
corpora quadrigemina
surface of the midbrain is called the
tectum
what is the tectum responsible for
visual (superior colliculi) and auditory processing (inferior)
walls and floor of the mesencephalon consists of
nuclei of the reticular formation
reticular formation consists of
pair of nuclei- red nucleus and substantia nigra
what is the reticular formation responsible for
maintaining alertness, muscle tone, and limb position
ventrolateral surfaces of the midbrain contain the
cerebral peduncles
cerebral peduncles are
white matter
connect primary motor cortex with motor neurons in brain and spinal cord- carry ascending sensory information to the thalamus
substantia nigra function
regulates activity in basal nuclei
red nuclei function
involuntary control of background muscle tone and limb position
what contains the pineal gland
epithalamus
where is melatonin produced
epithalamus (pineal gland)
interthalamic adhesion connects
the right and left thalamus
the hypothalamus extends from area superior to the ________ to the mammillary bodies
optic chiasm
where is the infundibulum
extending from the hypothalamus connecting the pituitary gland
the midsagittal section of the hypothalamus is the
tuberal area
what forms the walls of the third ventricle
the thalamus
anterior thalamic nuclei
part of the limbic system
medial thalamic nuclei
relay information to the frontal lobe
ventral thalamic nuclei
relay information to the parietal lobes
posterior thalamic nuclei
relay information to the occipital lobe
what invludes the pulvinar nuclei/ lateral geniculate nucleii/ medial geniculate nuclei
posterior nuclei
what does the lateral thalamic nuclei do
adjusts activity in the cingulate gyrus and parietal lobe
what does the hypothalamus control generally
subconscious control of skeletal muscles, HR, BP, respiration, and digestive functions
where is ADH secreted
hypothalamus supraoptic nucleus
where is oxytocin secreted
PVN in hypothalamus
what regulates body temperature in the hypothalamus
preoptic area
what regulates circadian rhythm
suprachiasmatic nucleus in the hypothalamus
the anterior and posterior lobes of the cerebellum are separated by
primary fissure + vermis
arbor vitae
connects cerebellar cortex with cerebellar peduncles
cerebellar peduncles- 3 parts
superior, middle, inferior
superior cerebellar peduncle
connects cerebellum with mesencephalon, diencephalon, and cerebrum
middle cerebellar peduncle
communicates between cerebellum and pons
inferior cerebellar peduncles
connects cerebellum with MO
