Intro Flashcards
Two main regions
CNS PNS
CNS
Brain (specific regions responsible for specific behaviors) and Spinal Cord
PNS
Sensory, motor, output, crainal, autonomic
Autonomic
Sympathetic (inc HR fight or flight)
Parasympathetic (dec HR rest and digest)
Both CNS and PNS
is automatic - basic homeostasis
recievs from CNS
sends to PNS
Motor
starts in __
sends to __
Neurons ___
starts in CNS
Neuromuscular Junction
alfa, betta, gama - specific neurons, specific responsse
sensory
starts in __
Recievs from __
Sends to __
Neurons ___
starts in PNS
recieves from skin
sends to CNS
distinct neurons fire sensory stimuli
how simple systes have automic responces
ciricuts - connection of neurons that recieve info and outputs an action (output of muscle or drives behavrio)
sometimes sensory bypasses the interneuron to the MN - refelex
spinal cord ciruct
1 sensory info in
2 interneuron within
3 motor info out
Types of cells in the NS
neuronal
glial
imune
blood
function of neurons
send and recieve info
two basic types of neurons
excitatory and inhibityory
models of the nervous system
all have PNS - motor and sencory and CNS- spinal cord
nematodes
insects
aquatic animals
rodents
Nematodes
C. Elegans
PNS - motor and seonsory
CNS - spinal cord and nerve center (NOT brain)
Insects
Drosohilia (more neurons than C.Elegans)
PNS - motor and sensory
CNS - spinal cord and brain
Aquatic Animals
Zebrafish + frogs ( are vertabrets/have all cells humans do)
PNS - motor and sensory
CNS - spinal cort and brain
