ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
4th Edition
ISBN: 9781265521363
Author: McKinley
Publisher: MCG
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Question
Chapter 15.4, Problem 11WDYL
Summary Introduction
To analyze:
The diagrams of the spinal and splanchnic nerve pathways as well as the difference between them which are based on the location of the synapses of these nerves.
Introduction:
Nerves are the carrier of electrical signals (nerve impulses). These nerves consist of several bundles of nerve cells (neurons). Based on their sources, these nerves are classified into two types. These are cranial and spinal nerves.
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How is the choice of neurochemical to be released at a synapse determined?
A) We don't have enough information to draw conclusions about how this process occurs.
B) The postsynaptic structure signals its "choice" to the presynaptic structure.
C) The presynaptic structure begins to release its neurochemical onto postsynaptic structures, which adapt by producing the appropriate receptors.
D) The "choice" is determined by the genes of both the pre- and postsynaptic cells.
Which of the following statements concerning synapses is FALSE?
O A) Modulation of synaptic strength can be presynaptic of postsynaptic
B) High frequency stimulation in the presynaptic neuron often leads to
DECREASED neurotransmitter release
O C) Modulation of synaptic strength can either be short term, lasting seconds, or
long term, lasting as long as a lifetime.
D) Agonists are drugs that mimic neurotransmitters and antagonists are drugs
that block the action of neurotransmitters
O E) Certain drugs prevent the reuptake of neurotransmitter from the synapse
Depression is a condition in which sufferers may feel low mood, lack of motivation and sleep. It is caused by a lack of serotonin in the synaptic cleft of neurone pathways. Serotonin is a neurotransmitter.
a) Describe how serotonin acts as a neurotransmitter. Using your understanding of synaptic transmission, explain how communication between neurones in serotonin pathways of the brain would be affected in someone with depression.
b) Doctors use tubocurarine drug as an anaesthetic as it temporarily paralyses muscles. It blocks receptors at neuromuscular junctions. Why does this lead to paralysis?
Chapter 15 Solutions
ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
Ch. 15.1 - What criterion is used to organize the nervous...Ch. 15.1 - Prob. 2WDYLCh. 15.1 - What CNS structure is the integration and command...Ch. 15.2 - Prob. 4WDYLCh. 15.2 - Describe the general anatomic differences in the...Ch. 15.2 - Prob. 6WDYLCh. 15.3 - Which four cranial nerves have a parasympathetic...Ch. 15.3 - What organs are innervated by the pelvic...Ch. 15.4 - Prob. 9WDYLCh. 15.4 - Prob. 10WDYL
Ch. 15.4 - Prob. 11WDYLCh. 15.4 - In what ways does the adrenal medulla pathway help...Ch. 15.5 - Prob. 13WDYLCh. 15.5 - Prob. 14WDYLCh. 15.6 - Prob. 15WDYLCh. 15.6 - Prob. 16WDYLCh. 15.6 - Prob. 17WDYLCh. 15.6 - Prob. 18WDYLCh. 15.6 - Prob. 19WDYLCh. 15.7 - Prob. 20WDYLCh. 15.7 - Prob. 21WDYLCh. 15.7 - Prob. 22WDYLCh. 15.7 - What are the body structures innervated by the...Ch. 15.8 - Prob. 24WDYLCh. 15 - A splanchnic nerve in the sympathetic division of...Ch. 15 - Some parasympathetic preganglionic neuron cell...Ch. 15 - Prob. 3DYKBCh. 15 - Prob. 4DYKBCh. 15 - Sympathetic division preganglionic axons travel to...Ch. 15 - Prob. 6DYKBCh. 15 - Prob. 7DYKBCh. 15 - A sympathetic postganglionic axon is a. long and...Ch. 15 - Prob. 9DYKBCh. 15 - Prob. 10DYKBCh. 15 - Prob. 11DYKBCh. 15 - For the following ganglia, identify the location...Ch. 15 - Prob. 13DYKBCh. 15 - Prob. 14DYKBCh. 15 - Prob. 15DYKBCh. 15 - Prob. 16DYKBCh. 15 - Prob. 17DYKBCh. 15 - What may occur with the mass activation of the...Ch. 15 - Prob. 19DYKBCh. 15 - Prob. 20DYKBCh. 15 - Prob. 1CALCh. 15 - Arlene was in a heightened state of alertness well...Ch. 15 - George has hypertension (high blood pressure). His...Ch. 15 - Prob. 4CALCh. 15 - Prob. 5CALCh. 15 - Prob. 1CSLCh. 15 - When you were younger, your parents may have told...Ch. 15 - Prob. 3CSL
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Similar questions
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- What is a synapse? Explain the difference between an excitatory and an inhibitory synapse.arrow_forwardThe purpose of an action potential (AP) is to propagate a signal down the axon to the axon terminal. What happens once it reaches the axon terminal? Using the experiment showing recordings from the post-synaptic cell (endplate potentials), describe what happens when an AP reaches the axon terminal and subsequently transmits the signal to a neighboring cell. What does this tell us about chemical neurotransmission?arrow_forwardFill in the descriptions for the following terms as they relate to the PNS or CNS neural tissue: Tract: Bundles of [ Select ] ["axons", "cell bodies"] in the [ Select ] ["CNS", "PNS"] Nerve: Bundles of [ Select ] ["axons", "cell bodies"] in the [ Select ] ["CNS", "PNS"] Ganglion: Bundles of [ Select ] ["axons", "cell bodies"] in the [ Select ] ["CNS", "PNS"] Nucleus: Bundles of [ Select ] ["axons", "cell bodies"] in the [ Select ] ["CNS", "PNS"]arrow_forward
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