1. Which of the following correctly describes the firing of neurons?
a protoplasmic transfer of ions
a finely graded response
an all-or-none response
an osmotic process
a symbiotic function

2. Painkilling substances produced by the brain are known as...
cortisols
endorphins
glucocorticoids
pheromones
hormones

3. Activation of the sympathetic branch of the autonomic nervous system results in...
an increase in salivation
an increase in digestion
an increase in respiratory rate
a decrease in heart rate
a decrease in pupil dilation

4. Hunger and eating are primarily regulated by which of the following?
androgens
estrogens
the hypothalamus
the kidneys
the medulla oblongata

5. The occipital lobes contain...
the primary visual cortex
the prefrontal cortex
the somatosensory cortex
the pons
sensory and motor connections to other brain regions

6. Dopamine, norepinephrine and acetylcholine are all...
hormones excreted by the endocrine glands
secretions of the exocrine glands
drugs used in the therapeutic treatment of memory disorders
enzymes involved with the degradation of interneuron signals
neurotransmitters that excite or inhibit a neural signal across a synapse

7. The primary effect of the myeline sheath is to...
increase the velocity of conduction of the action potential along the axon
increase the velocity of conduction of the action potential across the synapse
facilitate the incoming stimulus signals at sensory receptors
reduce the amount of unused neurotransmitters in the synaptic cleft
protect the terminal buttons of the neuron from destruction by enzymes

8. Which of the following is a genetic disorder that results in a deficiency of a liver enzyme which, if not treated soon after birth, may eventually lead to profound mental retardation?
Down Syndrome
Tay-Dachs disease
Fetal Alcohol Syndrome
Toxoplasmosis
Phenylketonuria

9. Which of the following allows the examination of living brain tissue visually without performing surgery?
computerized axial tomography
stereotaxic examination
retrograde degeneration
biofeedback
ablation

10. Which of the following is true of the reticular activating system (RAS)?
it is the major system in the brain for controlling emotions
it functions primarily in the control of motor responses
it regulates levels of arousal
it regulates body temperature
it controls the uptake of pituitary hormones

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