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Psychobiology Quiz


1. Normally a neural impulse must travel to the brain for processing before any action concerning the impulse is taken. However, during a(n) _____ the muscles may receive information about what action to take without any communication with the brain.

action potential
resting potential
reflex
axonal conduction


2. After angering the local bully, Bobby Brady realized he was about to get "socked" in the mouth. Once confronted with this situation, his sympathetic nervous system kicked in and, among other things, increased production of adrenaline, increasing blood flow to his muscles and away from his stomach. This response is known as the:

about to get my butt kicked response
fight-or-flight response
parietal response
parasympethetic response


3. The neural impulse travels from beginning to end on neurons in the following order:

motor neuron; impulse neuron; interneuron
sensory neuron; motor neuron; interneuron
interneuron; motor neuron; sensory neuron
sensory neuron; interneuron; motor neuron


4. Myelin is a fatty substance which covers the axon of a neuron to allow for faster transport of neural impulses and as protection for that neuron. However, there are gaps in the myelin (spaces on the axon where no myelin covering exists) at sights along the axon called:

Nodes of Ranvier
myelin
dendrites
synaptic cleft


5. The period in which a neuron is not presently carrying a neural impulse, but is ready and able to do so is called the:

absolute refractory period
action potential
resting potential
what's a neuron?


6. The biological system of communication that uses glands and hormones is the?

autonomic nervous system
peripheral nervous system
limbic system
endocrine system


7. The human brain is divided into two hemispheres that can communicate with each other because they are linked by the:

thalamus
hypothalamus
duodenum
corpus callosum


8. When neurotransmitters are released through the axon of the presynaptic neuron it enters the _____ on the way to the receptor sites in the dendrites of the postsynaptic neuron.

synapse
synaptic cleft
cytoplasmic region
Nodes of Ranvier


9. Often called the "Master Gland", this small brain structure is part of the endocrine system and is responsible for releasing numerous hormones throughout the body.

pituitary gland
gonadotropin
hypothalamus
corpus callosum


10. A neural impulse carries information along neurons. These impulses move through the neurons riding on a "wave" called a(n) _____, which may be defined as a brief change in a neuron's electrical charge.

synaptic cleft
action potential
reticular activating system
resting potential


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