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BIO181 Exam 3

ASU

QuestionAnswer
In the motor end plate, the event that is the immediate trigger for exocytosis is: - Potassium Ions - Chloride Ions - Calcium Ions - The action potential - The cell body Calcium Ions
The post-synaptic cell can be: - In glands, muscle cells, neurons - Are only neurons - Have only chemical synapses - Have only electrical synapses - This list contains no correct answers In glands, muscle cells, neurons
T/F: Fast neurons as described in lecture require cytoplasmic signal transduction to open an ion channel. False
T/F: When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end plate. True
List the 4 types of glial cells and list a phrase to describe their function. Schwann Cells - Oligodendrocytes - Astrocytes - Microglia
T/F: The axon from a pre-synaptic cell contacts the axon of another neuron. False
T/F: The cell body refers to the part of the neurons that begin at the dendrites and extend to the axon terminal. False
T/F: Excitatory synapses cause hyperpolarization of post-synaptic cells. False
The central nervous system (CNS) contains: - Nerves extending from the spinal column to the fingers - Motor neurons extending from the spinal column to the fingers - Only the brain - Two of the above - There is no correct answer There is no correct answer
T/F: Excitatory synapses make the post-synaptic cell less likely to fire. False
T/F: The autonomic nervous system contains the sympathetic and the parasympathetic nervous system. True
The resting potential of neurons is: - 0 mV - Same as the action potential. - Always a positive value. - Two of the above. - The answer is not on this list The answer is not on this list
T/F: Excitatory synapses cause depolarization of the post-synaptic cell. True
T/F: The axon hillock in the pre-synaptic neuron fires based on temporal and spatial summation of inputs. True
The action potential is: - A result of hyper-polarization. - A result of the movement of calcium ions. - A result of the action of the cell body. - A result of microtubules. - A result of the movement of ions. A result of the movement of ions.
T/F: Acetylcholine esterase breaks acetylcholine into muscarinic acid False
T/F: Fast neurons as described in lecture are fast because they are surrounded by a type of glial cell that results in a myelin coating. False
The neural tissues are: - Spinal cord, sensory neurons, and cell body - Spinal cord, sensory neurons, and brain - Brain, and sensory neurons - Pituitary and hypothalamus. - None of the above. Spinal cord, sensory neurons, and brain
T/F: Only pre-synaptic neurons are coated with myelin. False
Created by: cactuspeach
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