SPLH 620 Quiz #1 (Rock Chalk) with Complete Solutions(RATED A+)

Dorsal (Superior) - ANSWER-top of brain Ventral (Inferior) - ANSWER-bottom of brain Anterior - ANSWER-front of brain Posterior - ANSWER-back of brain GABA - ANSWER-primary inhibitory CNS neurotransmitter Axon Hillock - ANSWER-location of action potential initiation Spatial Summation - ANSWER-integration of synaptic input from dendrites and cell body areas Node of Ranvier - ANSWER-area of axon between myelinated sections with many ion channels Glutamate - ANSWER-primary excitatory CNS neurotransmitter Synaptic Cleft - ANSWER-the space between the axon terminal and dendrite membrane Temporal Summation - ANSWER-integration of synaptic input over time Metabotropic - ANSWER-type of receptor associated with slow chemical transmission (G-coupled protein reactions) An excitatory postsynaptic potential (EPSP) results in a hyperpolarization of the postsynaptic membrane. - ANSWER-False Sensory receptors produce receptor potentials, which are electrical signals propagated along the axon and then reach the CNS. - ANSWER-False Glia - ANSWER-cells that provide support, nutrition, and assist with signaling of neurons Cell Body - ANSWER-contains the cell nucleus Dendrites - ANSWER-receives signals Axon - ANSWER-conducts electrical signals Action potentials jump from node to node along the axon, ____________ membrane at the node. This process is called ____________ conduction. - ANSWER-depolarizing, saltatory Oligodendroglia - ANSWER-glia that provides myelinating insulation to axons in the CNS It is known that alcohol binds to the GABA receptor, which lets more Chloride ions into the cell by keeping the ion channel open longer. Such an effect of alcohol makes the neuron ____________ excitable and thus further ____________ the neuron activity. - ANSWER-less, diminishes