ASU BIO 181 EXAM 3 LATEST ACTUAL EXAM 100 QUESTIONS AND CORERCT DETAILED ANSWERS

ASU BIO 181 EXAM 3 LATEST ACTUAL EXAM 100 QUESTIONS AND CORERCT DETAILED ANSWERS Excitatory synapses make the post-synaptic cell less likely to fire. - Answer️️ -False The neural tissues are: - Answer️️ -Spinal cord, sensory neurons, and brain How do the glial cells (i.e., myelin sheath) speed up the firing of neurons? - Answer️️ - The cell wraps extensions of a fatty insulating substance (myelin) around the axons of neurons. The action potential is: - Answer️️ -A result of the movement of ions. Receptors are made from membrane-bound polyribosomes. - Answer️️ -True List the 4 types of glial cells and list a phrase to describe their function. - Answer️️ - Microglia: cleans up cellular debris- Astrocytes: support and repair neurons- Schwann Cells: myelinates axons of the neurons in the PNS- Satellite: form the brain-blood barrier within the CNS Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic cell to start the action potential in the postsynaptic cell. - Answer️️ -True When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end plate. - Answer️️ -True TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD OWNER: EMILLYCHARLOTTE COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISHED: SEPTEMBER 2024 Potassium ions are at high concentrations inside of cells including in neurons. - Answer️️ -True The membrane potential (resting potential) is largely set by the Na-K- ATPase pump. - Answer️️ -True Draw an action potential in the axon of a neuron and indicate which ions flow into the neuron and out of the neuron as the action potential passes at the point where the electrodes are in the cell. Be sure to assign on the Y-axis the mV of each of these areas. This should be as described in my lectures. - Answer️️ - Fast neurons as described in lecture are fast because they are surrounded by a type of glial cell that results in a myelin coating. - Answer️️ -False Voltage-gated ion channels open when a protein binds to the receptor. - Answer️️ - False The cell body refers to the part of the neurons that begin at the dendrites and extend to the axon terminal. - Answer️️ -False Only pre-synaptic neurons are coated with myelin. - Answer️️ -False The post-synaptic cell can be: - Answer️️ -In glands, muscle cells, neurons Fast neurons as described in lecture require cytoplasmic signal transduction to open an ion channel. - Answer️️ -False Acetylcholine esterase breaks acetylcholine into muscarinic acid - Answer️️ -False Excitatory synapses cause hyperpolarization of post-synaptic cells. - Answer️️ -False TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD OWNER: EMILLYCHARLOTTE COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISHED: SEPTEMBER 2024 Excitatory synapses cause depolarization of the post-synaptic cell. - Answer️️ -True The axon hillock in the pre-synaptic neuron fires based on temporal and spatial summation of inputs. - Answer️️ -True The receptors in post-synaptic cells are the basis on which the synapse can be defined as inhibitory or excitatory. - Answer️️ -False The resting potential of neurons is: - Answer️️ -The answer is not on this list Draw a neuron, and label all the parts as described in lecture. - Answer️️ - The central nervous system (CNS) contains: - Answer️️ -There is no correct answer The terminal web: - Answer️️ -is a site of exocytosis In the motor end plate, the event that is the immediate trigger for exocytosis is: - Answer️️ -Calcium ions The autonomic nervous system contains the sympathetic and the parasympathetic nervous system. - Answer️️ -True The axon from a pre-synaptic cell contacts the axon of another neuron. - A