Animal Nervous System Flashcards
1
Q
Porifera
A
No brains or neurons
2
Q
Cnidaria
A
Nerve nets, nerves are multifunctional
3
Q
Platyhelminthes
A
CNS, has brain and two nerve cords
4
Q
Annelida
A
Compact brain in the interior of body Two nerve cords that connect ganglia Nerves attach to each ganglion Extends to sensory structures/muscles CNS
5
Q
Mollusca
A
Simple nervous system
Two pairs of nerve cords organized around paired ganglia
Total of three sets of ganglia
Ganglia are connected by nerve fibers
6
Q
Nematoda
A
Simple nervous system
Nerve ring
Ganglia
Ventral and dorsal nerve cord runs both length and width of body
7
Q
Arthropoda
A
Small, intricate nervous system Dorsal brain ( three pairs of ganglia ) Ventral nerve cord Ganglia runs along the ventral midline CNS
8
Q
Echinodermata
A
CNS
Nerve rung
Radio nerve cords
9
Q
Chordata
A
CNS
Dorsal nerve cord
Notochord
Have brains
