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Physio Exam #1
Terms in this set (22)
The sympathetic and parasympathetic nervous systems make up the ______ branch of the _______ nervous system
_________ is the transmitter secreted from both preganglionic and postganglionic axons of the parasympathetic nervous system
The most common type of neuron in the CNS is...
What are the two methods for handling excess neurotransmitters?
Enzymatic deactivation, Reuptake
The ________ is comprised of the somatic and autonomic nervous systems
Contralateral refers to the ________ side, whereas ipsilateral refers to the ________ side
The ________ potential is defined as the difference in electrical charge between the inside and the outside of an undisturbed axon membrane
What cells make myelin in the PNS? CNS?
Schwann Cells, ogliodendrocyes
Which of the following represents a correct match between a neuronal organelle and its function?
Mitochondria, extraction of energy
In a myelinated axon, ions can enter and leave the axonal membrane only at...
The Nodes of Ranviet
The process by which similarly charged particles repel each other and are thus moved within a medium is called
The physical gap that carries a neural message between two nerve cells is the
A _______ refers to the large bulge on the surface of the brain
What are the two primary functions of proteins?
Structure, Serve as Enzymes
Which type of organelle is found in the terminal button and aids in the release of neurotransmitters?
The phenomenon of "blindsight" suggests that:
Our behavior can be guided by unconscious stimuli
Cessation of the respiration would be expected following damage to the ________
If a the voltage of the inside of a cell is at -80mV, the cell would be
The normal order of activation during neuronal transmission is...
Dendrite, Cell Body, Axon, Terminal button
At what point in the action potential do Na+ channels close?
Peak~ 30-40 mV
What's the layers in the brain in order from innermost to the outermost?
Pia, Arachnoid, Dura
What is the difference between the absolute and relative refractory periods?
Relative: action potential can occur
Absolute: No AP can occur
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