ANATOMY AND PHYSIOLOGY: AN INTEGRATIVE A
4th Edition
ISBN: 9781265949440
Author: McKinley
Publisher: MCG
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Chapter 1, Problem 10DYKB
Summary Introduction
Introduction:
The control system of homeostasis is separated into two categories based on whether the system amplifies the stimulus in the same direction or it maintains the variable in normal range in the opposite direction. The two types of feedback control include positive feedback and negative feedback respectively.
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Which of the following statements correctly describes the all-or-none principle?
a. A neuron produces a complete response or no response to a stimulus.
b. A stimulus depolarizes all of the neurons in the body or none at all.
c. A neuron produces a complete response to every stimulus.
d. A stimulus repolarizes all of the neurons in the body or none at all.
Which of the following is true of positive feedback?
a. The change is opposite that of negative feedback
b. The effector turns off the response
c. The change is amplified
What is the difference between the answers a & b?
In describing a positive feedback loop, which of the following would be true?
a) the sensor and control center are always the same
b) the effector signals the control center to shut off the initial stimulus
c) the effect shuts off the initial stimulus
d) the effect amplifies the initial stimu
Chapter 1 Solutions
ANATOMY AND PHYSIOLOGY: AN INTEGRATIVE A
Ch. 1.1 - What is the relationship between anatomy and...Ch. 1.1 - How might knowledge of surface anatomy be...Ch. 1.1 - Which field of physiology examines how the heart,...Ch. 1.2 - Compare and contrast how anatomists and...Ch. 1.4 - Prob. 6WDYLCh. 1.4 - Prob. 8WDYLCh. 1.5 - Prob. 9WDYLCh. 1.5 - Prob. 10WDYLCh. 1.5 - Prob. 12WDYLCh. 1.5 - Prob. 13WDYL
Ch. 1.6 - List and describe the three components of a...Ch. 1.6 - Prob. 15WDYLCh. 1.6 - Prob. 16WDYLCh. 1.7 - Prob. 17WDYLCh. 1 - Which field of anatomy examines the superficial...Ch. 1 - Prob. 2DYKBCh. 1 - Prob. 3DYKBCh. 1 - Prob. 4DYKBCh. 1 - Prob. 5DYKBCh. 1 - Prob. 6DYKBCh. 1 - Which body cavity is located inferior to the...Ch. 1 - Prob. 8DYKBCh. 1 - Prob. 9DYKBCh. 1 - Prob. 10DYKBCh. 1 - What are the similarities and differences between...Ch. 1 - List the levels of organization in a human,...Ch. 1 - Prob. 13DYKBCh. 1 - Name the organ systems in the human body.Ch. 1 - Describe the body in the anatomic position. Why is...Ch. 1 - List the anatomic term that describes each of the...Ch. 1 - What are the two body cavities within the...Ch. 1 - Describe the structure and function of serous...Ch. 1 - What are the main components in a homeostatic...Ch. 1 - Prob. 20DYKBCh. 1 - Your friend Eric complains of some pain in his...Ch. 1 - Your friend Eric complains of some pain in his...Ch. 1 - Your friend Eric complains of some pain in his...Ch. 1 - When you are outside on a hot, humid day, what...Ch. 1 - A friend just started taking Zoloft (an SSRI) and...Ch. 1 - Lynn was knocked off her bicycle during a race....Ch. 1 - Prob. 2CSLCh. 1 - Prob. 3CSL
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements about the intensity of a nerve response is true? a. A stimulus reaching the threshold level may or may not propagate a nerve impulse. b. A stimulus resulting in a greater voltage shift will result in a stronger nerve impulse and increased sense of perception in the brain. c. All stimuli, regardless of the strength, will always generate a nerve impulse. d. A small voltage shift and a large voltage shift will yield the same nerve impulse as long as the stimulus reaches the threshold level.arrow_forwardWhich of the following statements about the intensity of a nerve response is true? Select one: a. A stimulus reaching the threshold level may or may not propagate a nerve impulse. b. A small voltage shift and a large voltage shift will yield the same nerve impulse as long as the stimulus reaches the threshold level. c. All stimuli, regardless of the strength, will always generate a nerve impulse. d. A stimulus resulting in a greater voltage shift will result in a stronger nerve impulse and increased sense of perception in the brain.arrow_forwardWhich of the following is the correct definition of positive feedback? a The process by which the body neglects homeostasis. b A mechanism in which the body's response to a stimulis opposes the stimulus. c A mechanism whereby the body responds to a stimulus by acting to enhance the stimulus d The dynamic equilibrium maintained by an integrating center which causes an effector to respond to the stimulus received by the receptor.arrow_forward
- Which of the following rows correctly describe the direction of a nerve impulse in a reflex arc? a. Receptor → spinal cord → brain → effector b. effector → motor neuron → spinal cord → brain → sensory neuron → receptor c. sensory neuron → spinal cord → motor neuron → effector d. sensory neuron → brain → motor neuron → effectorarrow_forwardIn a negative feedback loop, the effector moves the system in the direction as the stimulus.arrow_forwardA(n) binds to a receptor and elicits a biological effect; while a(n) binds to a receptor but does not elicit a biological effect. a. Effector; inhibitor O b. Activator; inhibitor c. Agonist; antagonist Od. Antagonist; agonistarrow_forward
- In the absence of any environmental cues, a circadian rhythm is said to bea. entrained.b. in phase.c. free running.d. phase-shifted.e. no longer present.arrow_forwardIn negative feedback systems the receptor sends a negative signal the stimulus is increased or amplified the effector reduces or eliminates the stimulus the control center receives input from the effector the receptor increases or enhances the stimulusarrow_forwardThe release of a neurotransmitter from a terminal button produces an inhibitory postsynaptic potential (IPSP) in the postsynaptic neuron. What is the most likely mechanism by which this occurs? A. the neurotransmitter opens chemically activated chloride channels B. the neurotransmitter activates a second messenger which then opens calcium channels C. the neurotransmitter is glutamate D. the neurotransmitter acts on a G-protein linked receptor which opens sodium channelsarrow_forward
- You have to identify the following:1. The negative feedback condition/mechanism2. The four components of a negative feedbackloop:A. stimulusB. sensorC. control centerD. effector3. Explain what would happen to eachcomponent if a secretion became too great.arrow_forwardWhich of the following terms does The information flow from the outside to the inside and then to the effectors belong to? a.)Control center b.)Homeostasis c.)Stimulus-response model d.)Negative feedback e.)Positive feedback f.)Feedback modelarrow_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_forward
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