State during which a neuron contains more -ions inside than outside the cell. NOT firing.
the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron
When the electric potential in a cell is in action versus a resting state, the electrical charge reversal is known as the ____________
State of being positively charged, in comparison to charge outside the neuron
Causes neurotransmitters to be released into the synapse
Like a locked door that only certain neurotransmitter "keys" can unlock; because ______s are holes in the surface of dendrites or certain cells of the muscles & glands that are shaped to fit only certain neurotransmitters
______ Make it more likely a neuron will send its message to other neurons
______ Make it less likely a neuron will send its message to other neurons
a neurotransmitter that enables learning and memory and also triggers muscle contraction
a neurotransmitter that affects hunger, sleep, arousal & mood. appears in lower than normal levels in depressed persons
When more sodium ions outside the neuron and more potassium ions inside that neuron; usually when inactive
sodium rushes into neuron through membrane, potassium ruses out; results in a change in charge; the refractory period of the neuron will prevent it from firing.
As each section of the axon is depolarizing, the preceding section is going through the process of __(a)__. Also called the __(b)__ period, as it cannot fire again until it reaches resting potential
GABA (Gamma-aminobutyric acid)
Inhibitory transmitter to the neurosystem
Release of ___ is stimulated by alcohol consumption; which is why too much alcohol is followed by the general inhibitory patterns associated with being drunkk.
narcotic drug derived from opium, used to treat severe pain and aid sleep. ___ and other opiates tap into receptor sites for endorphins