Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Question
Chapter 39, Problem 4FIB
Summary Introduction
Introduction:
The nervous system has complex functions and is the main controlling system for the coordination of several other function of the body. The nervous system is divided into the central nervous system and the peripheral nervous system.
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What is the primary purpose of the peripheral nervous system?
To process information received from the environment and coordinate responses
To transmit information toward or away from the central nervous system
What is a nerve impulse? State the direction followed by a nerve impulse while travelling in the body of an organism.
Match the following components of the nervous system with their correct descriptions
Interneurons
Sensory neurons
Motor neurons
Nerve net
Neurons that send signals to effector cells like muscles and glands that affect change
Neurons that carry signals from the environment to the central nervous system from the peripheral nervous system
Neurons that transmit signals between other neurons, part of the CNS
A diffuse arrangement of neurons that are found in jellyfish and other cnidarians
Chapter 39 Solutions
Biology
Ch. 39.1 - describe the structure of a typical neuron?Ch. 39.1 - Prob. 2CYLCh. 39.2 - Prob. 1TCCh. 39.2 - Prob. 1CSCCh. 39.2 - Prob. 1CYLCh. 39.2 - explain how an action potential in a presynaptic...Ch. 39.2 - Prob. 3CYLCh. 39.3 - Prob. 1TCCh. 39.3 - Prob. 1CYLCh. 39.3 - Prob. 2CYL
Ch. 39.3 - explain how the brain determines which muscles to...Ch. 39.4 - describe the anatomy of diffuse and centralized...Ch. 39.5 - John comes to the emergency room with neither...Ch. 39.5 - Prob. 1CSCCh. 39.5 - Prob. 2TCCh. 39.5 - Prob. 1CTCh. 39.5 - Prob. 1HYEWCh. 39.5 - distinguish between the central and peripheral...Ch. 39.5 - Prob. 2CYLCh. 39.5 - label diagrams of the human brain and spinal cord,...Ch. 39.5 - Prob. 4CYLCh. 39.5 - Prob. 5CYLCh. 39.5 - Prob. 2CTCh. 39 - Prob. 1MCCh. 39 - Neurotransmitters are typically released by a a....Ch. 39 - Automatic bodily functions such as breathing and...Ch. 39 - Prob. 4MCCh. 39 - Prob. 5MCCh. 39 - Prob. 1FIBCh. 39 - Prob. 2FIBCh. 39 - Prob. 3FIBCh. 39 - Prob. 4FIBCh. 39 - Prob. 5FIBCh. 39 - Prob. 6FIBCh. 39 - Prob. 1RQCh. 39 - Prob. 2RQCh. 39 - What are the four elements of a neuronal pathway,...Ch. 39 - Prob. 4RQCh. 39 - Prob. 5RQCh. 39 - Prob. 6RQCh. 39 - Explain the differences between short-term memory...Ch. 39 - Prob. 1ACCh. 39 - Prob. 2AC
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- Upper motor neuron damage: Results in activation of the extensor reflex Results in activation of the fight or flight response Results in weakness that becomes spasticity Results in spasticity that becomes flaccidityarrow_forwardWhen light strikes our rods and cones, their sodium and calcium channels close and they release less glutamate. This causes the _____ cells in our retinas to release more neurotransmitters, which increases the firing rate of action potentials in the _____ cells. A) bipolar; ganglion B) complex; amacrine C) amacrine; complexarrow_forwardWhen food distends the duodenum, the duodenum releases the hormone CCK. By what peripheral (non-CNS) mechanism does it increase satiety? a. CCK increases stomach contractions. b. CCK tightens the sphincter muscle between the stomach and the duodenum. c. CCK increases the ability of nutrients to enter cells. d. Cells in the hypothalamus release CCK as a neurotransmitter.arrow_forward
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- When the dentist gives you a lidocaine injection before drilling into a tooth, she numbs a nerve in your mouth, which is a A)cranial nerve and part of the peripheral nervous system. B)cranial nerve and part of the central nervous system. C)spinal nerve and part of the peripheral nervous system. D)spinal nerve and part of the central nervous system.arrow_forwardThe central nervous system is connected with the peripheral nervous system by all the following types of nerve fibers, except :-a- postganglionic autonomic fibersb- preganglionic autonomic fibersc- somatic motor fibersd- autonomic sensory fibersarrow_forwardFigure 35.26 Which of the following statements is false? The parasympathetic pathway is responsible for relaxing the body, while the sympathetic pathway is responsible for preparing for an emergency. Most preganglionic neurons in the sympathetic pathway originate in the spinal cord. Slowing of the heartbeat is a parasympathetic response. Parasympathetic neurons are responsible for releasing norepinephrine on the target organ, while sympathetic neurons are responsible for releasing acetylcholine.arrow_forward
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