Lab: Nervous System Flashcards
have plasma membranes capable of the reception and transmission of stimuli
neurons
neurons have many projections coming their …. which contains the nucleus
cell body
stimuli is received by short, branching …
dendrites
single long project from the neuron’s cell body that transmits a signal across it’s length
axon
neurotransmitters that are released to communicate the stimuli come from the ….
axon terminal
preform support functions in tissue; glial cells
neuroglia
what animals do not have nervous tissue?
sponges and placozoans
planaria
ventral nerve cords & transverse nerves
anterior ganglia
earthworms
double ventral nerve chords
segmental ganglia & nerves
anterior ganglia
grasshopper (arthropod)
double ventral nerve cords
rudimentary brain
segmental ganglia
lancelets (chordate)
dorsal nerve cord
notochord
Vertebrates
dorsal nerve cord
CNS vs PNS
