Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 42.1, Problem 1CC
Summary Introduction
To explain: Whether it is important that all reflexes that are initiated must undergo completion or in some cases, the reflexes might be overridden or partially suppressed.
Introduction: Reflexes are among the most important features of the nervous system. Reflexes enable the animals to give a quick response to important or potentially dangerous events. For example, a reflex action is generated when a hand touches a hot substance.
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Chapter 42 Solutions
Biology
Ch. 42.1 - Prob. 1CCCh. 42.2 - Prob. 1CSCh. 42.3 - Prob. 1CSCh. 42.3 - Prob. 2CSCh. 42.3 - Prob. 1CCCh. 42.3 - Prob. 2CCCh. 42.4 - What key prior observation led Loewi to develop...Ch. 42.4 - CoreSKILL The results of Loewis experiment...Ch. 42.4 - Prob. 3EQCh. 42 - Prob. 1TY
Ch. 42 - Prob. 2TYCh. 42 - The myelin sheath a. is produced by neurons in the...Ch. 42 - Prob. 4TYCh. 42 - Prob. 5TYCh. 42 - Which of the following contribute(s) to the...Ch. 42 - Prob. 7TYCh. 42 - Prob. 8TYCh. 42 - Prob. 9TYCh. 42 - Prob. 10TYCh. 42 - Prob. 1CQCh. 42 - Prob. 2CQCh. 42 - Prob. 3CQCh. 42 - Describe the difference between an electrical...Ch. 42 - Prob. 2COQ
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- Draw a reflex arc in place in the nervous system (recall Figure 12.11). Would the reflex still function if the neurons in the sensory ganglia were destroyed?arrow_forwardWhat is affected by the electrical signal sent by the third structure? (This will be the fourth structure in the arc.) Where is the cell body of the fourth structure located? What is affected by the electrical signal sent by the fourth structure? (This will be the fifth structure in the arc.) What does the fifth structure do in response to that electrical signal and how does this action protect you? Describe a situation where a reflex arc would be activated that is not described in your lesson. Assume that the reflex arc has five components to it. Please choose a reflex that involves a body part below the neck. (If you have trouble with this, do an internet search for information on reflex arcs.)arrow_forward1.) What is the divisions of the nervous system 2.) what is the parts of neuron and synapse 3.) what is the parts of a graph of membrane potential 4.) what is the structures and functions of the eye, ear and brain - parts of the reflex arcarrow_forward
- We regularly make conscious decisions to make specific muscular movements. For example, when using the touch interface of your phone, you make a conscious effort to scroll up and down the screen using your finger. In contrast, there are many muscular movements that cannot be controlled voluntarily. For example, you cannot make your heart stop by thinking about it. Which of the following statements correctly identifies the parts of the nervous system that are involved in voluntary and involuntary actions, respectively? Select one: a. Motor neurons of the somatic nervous system and motor neurons of the autonomic nervous system b. Motor neurons of the autonomic nervous system and sensory neurons of the somatic nervous system c. Sensory neurons of the somatic nervous system and sensory neurons of the autonomic nervous system d. Sensory neurons of the peripheral nervous system and motor neurons of the autonomic nervous systemarrow_forwardThe reflex arc is the fastest way the body has to move a body part from danger or away from the source of pain. Have you ever noticed your own reflex response? Did you notice that you felt the pain after you yanked your hand away from the source of pain? Which is the sequence of structures involved in a reflex response? a. motor neurons → effectors → brain → sensory neurons → interneurons b. effectors → sensory neurons → brain → motor neurons c. sensory neurons → interneurons → motor neurons → effectors d. sensory neurons → motor neurons → interneurons → effectorsarrow_forwardDescribe and interpret the different reflexes of animalsarrow_forward
- The venom of some cobras contains a mixture of substances that have a variety of physiological effects. One substance in the venom works by preventing acetylcholine from binding to muscle receptors. Which of the following describes the effect of the venom on the prey of the cobra? Question 5 options: Muscle contractions are prevented, causing paralysis. Muscle contractions occur, but refractory periods would be longer. Action potentials are continuously generated, causing tetanus. Weak muscle contractions occur but are limited by ATP production by glycolysis.arrow_forwardNumber the events of a reflex arc from 1 (first event) to 5 (last event). CNS sends output via motor neurons to an effector Sensory neurons bring the stimulus to the CNS The muscle contracts CNS processes and integrates the information Sensory receptor detects the stimulusarrow_forwardWhat is similar about the Autonomic and Somatic Nervous Systems? O Both have smooth muscle as effectors Both can send information to the Central Nervous System through afferent neural pathways Both have skeletal muscle as effectors Both are part of the Efferent (Motor) Division of the Nervous Systemarrow_forward
- ( Q.1 ) Peripheral Nervous System - Question is in the photo provided below.arrow_forwardConsider three alpha-motor neurons of different sizes: small, medium and large. All three neurons receive input from the same excitatory interneuron. When the interneuron fires action potentials at low frequency, only one alpha motor neuron fires action potentials. As the action potential frequency of the interneuron increases, two alpha-motor neurons are recruited, and at maximum frequency, all three are recruited. In what order would the three alpha-motor neurons have been recruited? Large first, then medium, then small. Small first, then medium, then large. Medium first, then small, then large. Medium first, then large, then small.arrow_forwardAnimals are continuously bombarded by a vast array of environmental stimuli. Consider how animals with the simplest and most complex bilateral nervous systems (flatworms and mammals, respectively) might filter and preferentially respond to these environmental stimuli.arrow_forward
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