BIO 348 DREXEL EXAM QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS

BIO 348 DREXEL EXAM QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS 2025 EXAM  BIO 348 DREXEL EXAM QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS axon hillock - CORRECT ANSWER The decision of whether or not to fire the an action potential results from the cumulative integration of all the inputs to a given neuron. Which region of the neuron performs this complutational function? Phrenology (bumps on skull) - CORRECT ANSWER Franz Joseph Gall Cajal - CORRECT ANSWER Neuron doctrine-nervous system is composed of individual cells Occipital lobe - CORRECT ANSWER Most caudal region of the brain 2 classes of cells in nervous system - CORRECT ANSWER neurons and glia What makes neurons unique? - CORRECT ANSWER polarized cells Examples of glia cells - CORRECT ANSWER ogliodendrites, Schwann cells, Microglia, astrocytes, NG2 cells Which cell types would produce a reduction in white matter? - CORRECT ANSWER Oligodendrocytes What is the refractory period of an action potential caused by? - CORRECT ANSWER a maximum frequency at which a single neuron can send action potentials Which ion is most important for neural inhibition? - CORRECT ANSWER Chloride Example of afferent neuron, arriving from pns to cns - CORRECT ANSWER sensory neurons Example of efferent neuron, away from cns? - CORRECT ANSWER motor neurons Interneurons - CORRECT ANSWER Betwee same structure, relay between different regions, connections between afferent to efferent What is the neurotransmitter that is excitatory? - CORRECT ANSWER glutamate What type of neuron does an excitatatory signal need? - CORRECT ANSWER projection neurons because excitatory signals are sent to distant regions What is the neurotransmitter that is inhibtory? - CORRECT ANSWER GABA Which type of neuron does an inhibitory signal need? - CORRECT ANSWER Interneuron neurons because inhibitory signals are sent to neighboring cells What is the funcion of neuromodulatory signals? - CORRECT ANSWER How doe neurons communicate? - CORRECT ANSWER Through action potentials How do neurons communicate chemically? - CORRECT ANSWER neurotransmitters How do neurons communicate? - CORRECT ANSWER ions trigger zone (axon hillock) - CORRECT ANSWER sensitive part of an axon where an action potential is generated