The basic unit of structure and function in the nervous system is
the neuron.
a. true
b. false
17
The endocrine system produces chemical messengers called enzymes.
a. true
b. false
18
The thyroid is a link between the nervous and endocrine systems.
a. true
b. false
19
Axons connect sensory neurons to motor neurons.
a. true
b. false
20
The parathyroids regulate the level of calcium in the blood.
a. true
b. false

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis

This comparative chart is an example of one that might be used by scientists and law enforcement personnel for identification purposes. the chart represents a technological advance called

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano