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BIO 181 (Capco ASU) Exam 3 (Final Exam all questions solved 100 accurately latest version
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BIO 181 (Capco ASU) Exam 3 (Final Exam)T/F Excitatory synapses cause hyperpolarization of post-synaptic cells. -
CORRECT ANSWER-False
The resting potential of neurons is: - CORRECT ANSWER--60 mv (The answer
is not on this list.)
T/F The autonomic nervous system contains the sympathetic and the
parasympathetic nervous system. - CORRECT ANSWER-True
In the motor end plate, the event that is the immediate trigger for exocytosis is: -
CORRECT ANSWER-Calcium Ions
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. - CORRECT
ANSWER-
The action potential is: - CORRECT ANSWER-A result of the movement of ions.
T/F The cell body refers to the part of the neurons that begin at the dendrites and
extend to the axon terminal. - CORRECT ANSWER-False
T/F When the presynaptic cell contacts a muscle cell, the synapse area is called
a motor end plate. - CORRECT ANSWER-True
The post-synaptic cell can be: - CORRECT ANSWER-In glands, muscle cells,
neurons
T/F Excitatory synapses cause depolarization of the post-synaptic cell. -
CORRECT ANSWER-True
T/F Only pre-synaptic neurons are coated with myelin. - CORRECT
ANSWER-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. - CORRECT
ANSWER-False
T/F The axon from a pre-synaptic cell contacts the axon of another neuron. -
CORRECT ANSWER-False
List the 4 types of glial cells and list a phrase to describe their function. -
CORRECT ANSWER-- Microglia: Are part of the cellular immune system to
protect the brain since the humoral immune system usually cannot cross the BB
barrier.
- Astrocytes: Contribute to the blood brain barrier
- Schwann Cells: myelinates axons of the neurons in the PNS
- Oligodendrocytes: Myelinates axons of the neurons of the CNS
The central nervous system (CNS) contains: - CORRECT ANSWER-Brain and
Spinal Cord (There is no correct answer).
T/F Fast neurons as described in lecture require cytoplasmic signal transduction
to open an ion channel. - CORRECT ANSWER-False
T/F Acetylcholine esterase breaks acetylcholine into muscarinic acid -
CORRECT ANSWER-False
T/F The membrane potential (resting potential) is largely set by the Na-K-
ATPase pump. - CORRECT ANSWER-True
T/F The receptors in post-synaptic cells are the basis on which the synapse can
be defined as inhibitory or excitatory. - CORRECT ANSWER-False
T/F
The axon hillock in the pre-synaptic neuron fires based on temporal and spatial
summation of inputs. - CORRECT ANSWER-True
T/F
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