review part 3 (test 3) Flashcards
what is the role of the preoptic anterior nucleus?
senses heat and triggers the body to cool down
What is the role of the posterior hypothalamic nucleus?
senses cold and triggers the body to warm up
What is the role of the dorsomedial nucleus?
tells you when you’re hungry
What is the role of the ventromedial nucleus?
tells you when you’re full
What is the role of the paraventricular nucleus?
osmoregulation, parvocellular neurons that regulate adenohypophysis, magnocellular neurons that regulate the neurohypophysis, controls ANS via the hypothalamospinal (sympathetic) and dorsal longitudinal fasciculus (parasympathetic)
what is the role of the suprachiasmatic nucleus?
master regulator of circadian clock (mostly through light stimulation)
What is the role of the mamillary bodies?
helps convert short-term memories into long-term memories
How does heroin and cocaine affect the nucleus accumbens?
increases dopamine in the nucleus accumbens
What is the amygdala responsible for?
emotional and rive-related behavior
What is the hippocampus responsible for?
important for laying down new declarative memories
What are we looking at?
hippocampus
cinnamon rolls
What happens if you have a bilateral loss of the hippocampus?
unable to lay down new declarative memories
what promotes sleep?
VLPO (ventrolateral preoptic nucleus)
MnPO (median preoptic nucleus)
What happens if you damage the ascending reticular activating system (ARAS)?
coma
Define insomnia
disability to fall or stay asleep
define hypersomnia
excessive daytime sleepiness or prolonged nighttime sleep
define parasomnia
sleep disorders that generally involve abnormal movements, behaviors, and emotions
What are the symtoms of narcolepsy?
CHASE
Cataplexy (sudden paralysis when conscious)
Hallucinations
Automatism (performance of actions without thought or intention)
Sleep paralysis
Excessive daytime sleeping
What type of cells are deficient in narcolepsy?
orexin producing cells in the hypothalamus
can iron defiiency cause restless leg syndrome? pregnancy? end-stage renal disease?
yes
yes
yes
What is REM sleep behavior disorder?
loss of REM sleep atonia causing the patient to physically act out their dreams
asymmetric tonic neck reflex
when the head is turned, contralateral limbs will flex and ipsilateral limbs extend
Tonic labyrinthe reflex
When the head is extended (tilted back), the back arches, the legs straighten, and the arms bend
galant reflex
when prone, stroking along the side of the spine causes lateral flexion of the ipsilateral lower body
palmar grasp reflex
when the palm is touched, the fingers grasp the object
placing reflex
when the toddler is supported in an upright position and the back of the foot touches a surface, the leg flexes
moro (startle) reflex
when the infant’s support is suddenly removed, the arms abduct, then adduct (wing flapping)
