Ch143 Adaptations to Nervous Regulation

1
Ch14-3 Adaptations to Nervous Regulation

• What type of nervous system does a hydra have?
• Do prostists have nerve cells?
• Which nervous system in the earthworm includes
  the brain of the earthworm?
• What do we call a group of cell bodies and
  interneurons that switch, relay, and coordinate
  nerve impulse?
• Based on their capacity for nervous regulation,
  palce ach of the following organisms in order
  form LEAST to MOST complex earthworm, human,
  hydra, paramecium, grasshopper?

Nerve net
no
Central nervous system
ganglion
Paramecium, hydra, earthworm, grasshopper, human