| A | B |
|---|
| regulation | l Is the control and coordination of all life activities |
| receptors | Are specialized structures that are sensitive to changes in the external and internal environment |
| neurons | are nerve cells |
| effectors | l Are muscles or glands in which neurons are attached to |
| dentrites | l Fibers that detect stimuli and generate an impulse toward the cyton |
| cyton | is the cell body |
| axon | l A fiber that transmits the impulse away from the cyton and towards the terminal branches |
| terminal branches | l The ends of axons that secrete neurotransmitters |
| synapse | l The gap between the terminal branches of 1 neuron and the dendrites of another neuron |
| Neurotransmitters | l Chemicals secreted by the terminal branches that aid in the transmission of an impulse across the synapse |
| Chemical Control | • Similar to nerve control, chemical control coordinates body processes by transmitting messages from one part of the organism to another |
| Phototropism | • Growth of a plant towards light due to unequal distribution of auxins |
| Geotropism | Growth of a plant due to gravity |
| Chemical Control in Animals | • Chemical control in animals differs from that in plants since animals possess cells specialized solely for hormone production |
| Endocrine Glands | • Endocrine glands synthesize and secrete hormones which control the activities of animals |
| Metamorphosis | • The development in an animal larva that transforms into a sexually mature adult |
