Campbell Biology: Concepts & Connections
15th Edition
ISBN: 9781269952378
Author: Jane Reese, Martha Taylor, Eric Simon, Jean Dickey, Kelly Hogan
Publisher: PEARSON
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Chapter 49, Problem 7TYU
(a)
Summary Introduction
To draw: The neuronal circuit representing the reflex that pulls the hand when the finger is pricked and, label the neurons, direction of information flow and location of synapses.
Introduction:
The body involuntarily reacts to a stimulus through reflex action. It includes the signals carried by nerve cells from receptor organs to the central nervous system (CNS) and then back to effector organs. Afferent (sensory) neurons carry information to CNS (brain or spinal cord), and efferent (motor) neurons carry information back to effector. It forms a neuronal circuit. In some cases, interneurons are present that relay signals between sensory or motor neurons and CNS.
(b)
Summary Introduction
To draw: Brain diagram indicating the area where the pain would be perceived.
Introduction:
The body involuntarily reacts to a stimulus through reflex action. It includes the signals carried by nerve cells from receptor organs to the central nervous system (CNS) and then back to effector organs. Afferent (sensory) neurons carry information to CNS (brain or spinal cord), and efferent (motor) neurons carry information back to effector. It forms a neuronal circuit. In some cases, interneurons are present that relay signals between sensory or motor neurons and CNS.
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DRAW IT The reflex that pulls your hand away when you prickyour finger on a sharp object relies on a neuronal circuit withtwo synapses in the spinal cord. (a) Using a circle to represent across section of the spinal cord, draw the circuit. Label the typesof neurons, the direction of information flow in each, and thelocations of synapses. (b) Draw a simple diagram of the brainindicating where pain would eventually be perceived.
Taylor accidentally dips his fingers into a cup filled with steaming hot coffee. He immediately withdraws his hand and then exclaims “ouch!”What is the correct order of the nervous system structures involved in the scenario described above?
Select one:
a. sensory neuron, effector, motor neuron, interneuron
b. motor neuron, receptor, sensory neuron, effector
c. receptor, sensory neuron, interneuron, motor neuron
d. sensory neuron, interneuron, effector, motor neuron
1. Make a model or draw 3 multipolar neurons. Imagine you had something crawling on your arm.
The first is a sensory neuron, getting its information from the skin and sensing the movement.
The second is an interneuron. It relays information from the first (sensory neuron) to the CNS.
The third is a motor neuron. It begins in the CNS but leads all the way to the muscle, so that you can move the fingers and scratch the area.
On your images/model the "dendrites" should be blue, "axon" should be green and "soma" should be yellow. As you connect them to each other, take notice in which areas are the receiving end, and which are the transmissive ends.
Chapter 49 Solutions
Campbell Biology: Concepts & Connections
Ch. 49.1 - Which division of the autonomic nervous system...Ch. 49.1 - Prob. 2CCCh. 49.1 - Prob. 3CCCh. 49.2 - When you wave your right hand, what part of your...Ch. 49.2 - People who are inebriated have difficulty touching...Ch. 49.2 - Prob. 3CCCh. 49.3 - How can studying individuals with damage to a...Ch. 49.3 - Prob. 2CCCh. 49.3 - Prob. 3CCCh. 49.4 - How can studying individuals with damage to a...
Ch. 49.4 - Individuals with localized brain damage have been...Ch. 49.4 - WHAT IF? Suppose that a person with damage to the...Ch. 49.5 - Prob. 1CCCh. 49.5 - Prob. 2CCCh. 49.5 - WHAT IF? If you could detect early-stage...Ch. 49 - How does the circuitry of a reflex facilitate a...Ch. 49 - What roles do the midbrain, cerebellum, thalamus,...Ch. 49 - A patient has trouble with language and has...Ch. 49 - Prob. 49.4CRCh. 49 - Prob. 49.5CRCh. 49 - Prob. 1TYUCh. 49 - Prob. 2TYUCh. 49 - Patients with damage to Wernickes area have...Ch. 49 - The cerebral cortex does not play a major role in...Ch. 49 - After suffering a stroke, a patient can see...Ch. 49 - Injury localized to the hypothalamus would most...Ch. 49 - Prob. 7TYUCh. 49 - Prob. 8TYUCh. 49 - SCIENTIFIC INQUIRY Consider an individual who had...Ch. 49 - Prob. 10TYUCh. 49 - WRITE ABOUT A THEME: INFORMATION In a short essay...Ch. 49 - SYNTHESIZE YOUR KNOWLEDGE Imagine you are standing...
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