EBK BIOLOGY
5th Edition
ISBN: 8220101337627
Author: Maier
Publisher: PEARSON
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Chapter 23, Problem 10LTB
Summary Introduction
To determine:
If the given statement is true or false.
Introduction:
Reflexes are automatic responses to a stimulus. They are prewired in a circuit of neurons known as a reflex arc, often consisting of a sensory neuron receiving information from a sensory receptor, an interneuron passing on the information, and a motor neuron sending a message to the muscle that needs to respond.
A reflex arc can consist of a sensory receptor, a sensory neuron, an interneuron, a motor neuron, and an effector. Touching a hot baking sheet evokes the withdrawal reflex.
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True/False: In a polysynaptic reflex, a sensory neuron synapses directly with a motor neuron.
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Chapter 23 Solutions
EBK BIOLOGY
Ch. 23 - How do the CNS and PNS differ?Ch. 23 - How do sensory, motor, and interneurons differ?Ch. 23 - What are the general senses?Ch. 23 - Which brain structure controls language, memory,...Ch. 23 - Prob. 5LTBCh. 23 - Prob. 6LTBCh. 23 - Prob. 7LTBCh. 23 - Neurotransmitters. ___________. are electrical...Ch. 23 - The effects of a neurotransmitter could be...Ch. 23 - Prob. 10LTB
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- List the five steps in a reflex arcarrow_forwardTrue or False: The cerebellum is more likely to be activated during automatic movements like walking, rather than learned movements like your golf swing.arrow_forwardBackground: A doctor conducted a patellar tendon (aka knee jerk - covered in lecture, assigned reading, and laboratory) reflex test on a patient. To do so, she tested the patient's knee-jerk reflex by hitting the patient's patellar tendon with a rubber hammer. For this patient, the doctor observed that hitting the tendon caused no knee jerk reflex at all, even after many attempts. Normally, a patient will kick her lower leg after the hammer hit on the tendon. However, the doctor could stimulate contraction of the quadriceps leg muscles using a stimulating electrode that applied a voltage across the muscle. 1) During the examination, the patient got nervous. His heart rate increased. Which of the following would increase heart rate? Group of answer choices a)An increase in parasympathetic neural stimulation to the pacemaker node of the heart b)An increase in sympathetic neural stimulation to the pacemaker node of the heart c)An increase in acetylcholine release by motor neurons…arrow_forward
- Background: A doctor conducted a patellar tendon (aka knee jerk - covered in lecture, assigned reading, and laboratory) reflex test on a patient. To do so, she tested the patient's knee-jerk reflex by hitting the patient's patellar tendon with a rubber hammer.For this patient, the doctor observed that hitting the tendon caused no knee jerk reflex at all, even after many attempts.Normally, a patient will kick her lower leg after the hammer hit on the tendon.However, the doctor could stimulate contraction of the quadriceps leg muscles using a stimulating electrode that applied a voltage across the muscle. The doctor, with further analysis, determined that the receptor membranes of the stretch receptors were operating correctly.To do this, she carefully inserted an electrode into a stretch receptor's membrane, near to the location on the membrane where receptor proteins are located. She measured a change in voltage while hitting the tendon with the hammer. With further testing, the…arrow_forwardThe withdrawal reflex is a monosynaptic reflex arc.True ORFalsearrow_forwardConnie accidentally touched the hot kettle. Explain what happens using your knowledge of withdrawal reflex.arrow_forward
- There are reflex arcs that employ a gamma motor neuron wrapped around a muscle spindle and involve no interneurons. Which is NOT an appropriate example of these reflex arcs among the following? patellar reflex achilles reflex inverted supinator reflex C5 reflex arcsarrow_forwardComplex reflexes require the involvement of receptors, sensory, motor, excitatory, and inhibitory neurons, and the cerebral cortex True Falsearrow_forwardTrue or False The peripheral nervous system is made up of the brain and spinal cord.arrow_forward
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