1. 1
dendron
neuroglia
axon
neurones

2. 2
neuron
receptor
effector
sensory nerve

3. 3
sympathetic

4. 4
reflex
instinct
taxis
voluntary action
axon
acetyl choline
cholinesterase
auxin
noradrenalin
ANS
CNS

5. 5
dendrite
synapse
ganglia
tropism
Myelin Sheath
schwann cell
axon
cell membrane
schwann cell
dendrite
associative neurons
nerve nets
motor neurons
multipolar nerve cells
Reflex arc
K+
Na+
Ca++
Cl-

6. 6
Bipolar nerve
cells
Dorsal root ganglion
Neurosecretory cells
Sensory Neurons
Associative Neurons
Cone
choroids
spinal cord
medulla oblongata
semicircular canal

7. 7
cornea
lens
retina
eye
cone
rod
aqueous humor
vitreous humor
rod
cone

8. 8

9. 9
axon
fovea
retina
choroids
iris