Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 38.4, Problem 3CC
WHAT IF? If you stimulated a sensory neuron of an animal electrically, how would that stimulation be perceived?
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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.
Help me
What channels are open at 3 if this was recorded on the axon of a sensory neuron? Check all that apply
1. K+ voltage gated channels
2. K+ leak channels
3. Na+ ligand gated channels
4. Na+ stimulus gated channels
5. Na+ voltage gated channels
6. Ca+ voltage gated channels
7. Cl- ligand gated channels
Chapter 38 Solutions
Campbell Biology in Focus
Ch. 38.1 - Which division of the autonomic nervous system...Ch. 38.1 - Prob. 2CCCh. 38.2 - When you wave your right hand, what part of your...Ch. 38.2 - People who are inebriated have difficulty touching...Ch. 38.2 - WHAT IF? Two groups of individuals have CNS...Ch. 38.3 - Prob. 1CCCh. 38.3 - Prob. 2CCCh. 38.3 - WHAT IF? If a woman with a severed corpus callosum...Ch. 38.4 - Which one of the five categories of sensory...Ch. 38.4 - Prob. 2CC
Ch. 38.4 - WHAT IF? If you stimulated a sensory neuron of an...Ch. 38.5 - Prob. 1CCCh. 38.5 - Prob. 2CCCh. 38.5 - Prob. 3CCCh. 38.5 - Prob. 4CCCh. 38.6 - Contrast the light-detecting organs of planarians...Ch. 38.6 - Prob. 2CCCh. 38.6 - MAKE CONNECTIONS Compare the function of retinal...Ch. 38 - Patients with damage to Wernickes area have...Ch. 38 - The cerebral cortex does not play a major role in...Ch. 38 - The middle ear converts A. air pressure waves to...Ch. 38 - Prob. 4TYUCh. 38 - Prob. 5TYUCh. 38 - Prob. 6TYUCh. 38 - Prob. 7TYUCh. 38 - SCIENTIFIC INQUIRY Consider an individual who had...Ch. 38 - Prob. 9TYUCh. 38 - FOCUS ON ORGANIZATION In a short essay (100-150...Ch. 38 - Prob. 11TYU
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- 1. Protein anions have a charge. However, they do not move across the membrane to produce changes in RMP. Why? 2. At the molecular level, what causes the absolute refractory period? 3. At the molecular level, what is different during the relative refractory period? 4. What would happen if Na+ channels opened and stayed open? 5. How is stimulus intensity coded in APs? 6. What effect does AP frequency have on NT release?arrow_forwardScientists are experimenting with new technologies that could help people with missing limbs. In one investigation, electrodes implanted in the nervous tissue of a monkey were connected to an artificial hand. The monkey's nervous system was able to direct the artificial hand to move. The below image shows the monkey raising a piece of zucchini to its mouth using the thought-controlled robotic are (A). a. Using a flowchart, illustrate the basic neural pathway from the sensory stimulus to the motor output. b. What are some other potential applications for this technology? c. Do the benefits to human life justify this form of animal research?arrow_forwardCan you help me determine which graph is best suited for each?arrow_forward
- Can you please solve part d and e?arrow_forwardPlease help with this question. It is not the third option with the three peaks.arrow_forward4 The human eye has a biological control system that varies the pupil diameter to maintain constant light intensity to the retina. As the light intensity increases, the optical nerve sends a signal to the brain, which commands internal eye muscles to decrease the pupil's eye diameter. When the light intensity decreases, the pupil diameter increases. Draw a functional block diagram of the light-pupil system indicating the input, output, and intermediate signals; the sensor; the controller; and the actuator. (Non-anonymous question) * (a) (b) (c) FIGURE P1.7 Pupil is shown black; light beam is shown white. a. Light beam diameter is larger than pupil. b. Light beam diameter is smaller than pupil. c. Narrow light beam is illuminated at pupil's edge.arrow_forward
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