Homeostatic Nervous System Flashcards
hierarchy of processing of visceral sensations: lowest level
reflex loops
some visceral reflex loops are mediated by
spinal interneurons
hierarchy of processing of visceral sensations: intermediate level - hypothalamus
integration of reflex loops
the hypothalamus plays a role in regulating
temperature, blood pressure, heart rate, blood osmolarity, water and food intake, reproductive functions, emotional behavior
inputs to the hypothalamus are from
nucleus of the solitary tract
subiculum - output of limbic system
amygdala
thalamus
outputs from the hypothalamus go to
nucleus of the solitary tract
endocrine system (via pituitary gland)
limbic system
net function of the hypothalamus is
head of ganglion of the ANS
output of the hypothalamus
integrates and coordinates visceral programs to generate a coherent pattern of autonomic activity
hierarchy of processing of visceral sensations: intermediate level - amygdala
composed of several nuclei with reciprocal connections to: hypothalamus, hippocampus, cerebral cortex, thalamus, receives input from the olfactory cortex
the amygdala generates emotions related to
stress, rage, fear, anger, anxiety
emotional correlates of the flight or fight response
activity of the amygdala can activate the
sympathetic nervous system
hierarchy of processing of visceral sensations: highest level
cerebral cortex
cerebral cortex mediates
conscious awarness of drives
integration with sensory motor system
cerebral cortex - limbic cortex
integrates emotions with memory
the limbic cortex - hippocampus and rhinal cortices form
declarative memories