ch14pt2 Flashcards
both superior colliculi and both inferior colliculi are collectively known as
corpora quadrigemina
choroid plexus locations (2)
thalamus and roof of fourth ventricle
cerebellar peduncles (3)
superior, middle, inferior
Located under cerebrum.
Links cerebrum with the rest of the brain stem
diencephalon
hangs below hypothalamus
pituitary gland
Three divisions of the diencephalon
thalamus (right and left halves) and hypothalamus
Gatekeeper of cerebrum. relays and processes sensory information to cerebrum. Only sends small portion of info
thalamus
Major control center for endocrine and ANS
hypothalamus
Controls Hormone production in the pituitary gland. Thermoregulation (hypothalamic thermostat)
hypothalamus
controls emotion , Long term memory, thirst, Hunger. HR, BP, GI secretions (ANS)
hypothalamus
Major endocrine gland.
Connected to hypothalamus via infundibulum (stalk)
pituitary gland
________ controls pituitary secretions, thus interfaces _______ and ______ systems (hypothalamic-pituitary axis)
hypothalamus, nervous and endocrine
Visual and Auditory functions: Blinking, visual tracking, pupil dilation and constriction. Relays sounds form inner ear to thalamus.
midbrain
motor center inhibiting unwanted contractions. found on midbrain
substantia niagra
part of brain responsible for maintaining conciousness
midbrain
Connects cerebellum to brain stem. Carries motor and sensory signals up and down brainstem.
Pons
Is involved in: (a ton of shit)
Sensory: Hearing, equilibrium, taste, facial sensations
Motor: Eye movement, chewing, swallowing, facial expressions, saliva and tear secretions
Sleep, respiration, posture
Pons
nerves or clusters of brain cells with the same job or connecting to the same places. like ganglia but for CNS
nuclei
Sensory and motor nuclei of cranial nerves (muscles of jaw, eye, face; organs of inner ear) upon Pons
V, VI, VII, VIII
Nuclei involved with respiration (2) in Pons
apneustic and pneumotaxic centers
function of apneustic center and pneumotaxic center in Pons
Modify respiratory rhythmicity (center activity)
location of nuclei that process and relay information to and from cerebellum
Pons
tracts going through Pons
ascending and descending tracts
Connects brain to spinal cord; relays information
medulla oblongata
Regulates autonomic functions basic for life: heart rate, blood pressure, and digestion
medulla oblongata
autonomic function centers/nuclei within Medulla Oblongata (3)
cardiac, vasomotor, and respiratory centers
Groups of nuclei within the Medulla Oblongata (3)
autonomic, sensory and motor, relay stations/pathways
Sensory and motor nuclei of cranial nerves upon Medulla oblongata (5)
VIII, IX, X, XI, XII
controls visceral activities in medulla oblongata
autonomic nuclei
control HR and strength of contraction
cardiac centers <—autonomic nuclei <— medulla oblongata
controls vessel diameter
vasomotor center <—autonomic nuclei <— medulla oblongata
controls/ sets basic pace for respiratory movements
respiratory rhythmicity centers <—autonomic nuclei <— medulla oblongata
Vomiting, coughing, hiccupping, swallowing, sneezing
Autonomic Nuclei of the Medulla Oblongata
structures of Cerebellum (4)
folia, anterior and posterior lobes, cerebellar hemispheres
narrow band of cortex separating cerebellar hemispheres
vermis
groove separating anterior and posterior lobes of cerebellum
primary fissure
Large, branched cells found in cerebellar cortex (Gray matter). Receive input from up to 200,000 synapses (MANY dendrites)
Purkinje cells
Highly branched, internal white matter of cerebellum
Arbor Vitae
Cerebellar nuclei embedded in ___ ___ relay information to ______ cells
arbor vitae, Purkinje
Adjusts postural muscles and coordinates repetitive body movements. Plays part in evaluating certain sensory input, time keeping, emotions and impulse control
functions of Cerebellum
How cerebellum coordinates repetitive body movements (3)
intent, performance, learned movements
Receives info from cerebrum about intended movement (step 1 in cerebellum coordinating repetitive body movements)
intent
Receives info from eyes, inner ear, muscles, joints about actual movement (step 2 in cerebellum coordinating repetitive body movements)
performance
Compares intent with performance and adjusts performance if discrepancy exists (step 3 in cerebellum coordinating repetitive body movements)
learned movements
