Week 2 Flashcards
(48 cards)
where does feedforward start?
integrating center
biorhythm
pattern to the variation of a controlled variable (parameter)
phase
certain point in a period
period
whole cycle
amplitude
strength/intensity of physiological signal in a phase
circadian
about a day
lunar
time it takes for the moon to go through its cycle
nocturnal
active at night
diurnal
active during the day
personal clock ->
internal triggers that align with our cycles
adaptation ->
genetic change, sets us up for survival
acclimatization ->
adjustable changes
clock adjustment
changes in set point
use-based change
individual change that is reversible
developmental acclimitization
occurs in developmental stages, cannot be reversed
direct intercellular communication
communication between cells that requires direct contact
gap junctions
proteins provide connections between cells, short narrow channels
tunneling nanotubes
longer, wider channels that larger things can move through
juxtacrine
cells are sometimes connected, passing messages, transient protein connection between membranes
indirect intercellular connections
uses chemical signals to communicate
paracrine
from most cells to other nearby cells by diffusion through the fluid between cells
autocrine
“self-message,” sends signal to cell to be sent back later
neurotransmitter
from neurons to adjoining cell by fluid between the synapse connection
endocrine
from glands and neurons to distant cells through the bloodstream
