Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 1, Problem 8RA
In a negative feedback loop, the effector produces changes that are
a. in the same direction as the change produced by the initial stimulus.
b. opposite in direction to the change produced by the initial stimulus.
c. unrelated to the initial stimulus.
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What happens when the response produced by the effector causes a decrease in the magnitude of the stimulus that triggered the sequence of events?
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 → effector
Define the term adequate stimulus
Chapter 1 Solutions
Human Physiology
Ch. 1 - How has the study of physiology aided, and been...Ch. 1 - Describe the steps involved in the scientific...Ch. 1 - Describe the different types of trials a new drug...Ch. 1 - Define homeostasis and describe how this concept...Ch. 1 - Define negative feedback and explain how it....Ch. 1 - Prob. 4CPCh. 1 - Explain how the secretion of a hormone is...Ch. 1 - List the four primary tissues and describe the...Ch. 1 - Compare and contrast the three types of muscle...Ch. 1 - Describe the different types of epithelial...
Ch. 1 - Prob. 7aCPCh. 1 - Describe the different types of connective tissues...Ch. 1 - State the location of each type of primary tissue...Ch. 1 - Describe the functions of nervous, muscle, and...Ch. 1 - Describe the functions of the epidermis and...Ch. 1 - Prob. 9CPCh. 1 - Glands are derived from...Ch. 1 - Cells joined tightly together are characteristic...Ch. 1 - Cells are separated by large extracellular spaces...Ch. 1 - Blood vessels and nerves are usually located...Ch. 1 - Most organs are composed of...Ch. 1 - Sweat is secreted by exocrine glands. This means...Ch. 1 - Which of these statements about homeostasis is...Ch. 1 - In a negative feedback loop, the effector produces...Ch. 1 - A hormone called parathyroid hormone acts to help...Ch. 1 - Which of these consists of dense parallel...Ch. 1 - Prob. 11RACh. 1 - Prob. 12RACh. 1 - Describe the structure of the various epithelial...Ch. 1 - Compare bone, blood, and the dermis of the skin in...Ch. 1 - Describe the role of antagonistic negative...Ch. 1 - Using insulin as an example, explain how the...Ch. 1 - Describe the steps in the development of...Ch. 1 - Why is Claude Bernard considered the father of...Ch. 1 - Prob. 19RACh. 1 - Prob. 20RACh. 1 - Why are interactions between the body-fluid...Ch. 1 - Prob. 22RACh. 1 - Give examples of adult stem cells and explain...Ch. 1 - Prob. 24RACh. 1 - Prob. 25RACh. 1 - Prob. 26RA
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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 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.arrow_forwardDescribe the relationship between stimulus intensity, frequency of action potentials, and the amount of neurotransmitters released. What term describes this relationship?arrow_forwardOnce the gated channels are open and positive ions begin to enter the neuron,we have the start of a(n) A.stimulus B.resting potential C.a reaction D.impulsearrow_forward
- List the physiological events that occur between delivery of the stimulus and the start of the recordedresponse (i.e. during the latent period).arrow_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_forwardWhich of the following describes a stretch reflex?A. The receptor detects that a muscle is stretched, and sends a signal to contract it reflexively.B. The receptor detects that a muscle is contracted, and sends a signal to stretch it reflexively.arrow_forward
- What is meant by the modality of a stimulus? Give someexamplesarrow_forwardWhich of the following are mechanisms of gustation transduction? Select one or more: a. Hydrogen atoms activate proton channels b. Sodium ions activate sodium channels and a graded potential is produced c. Entry of sodium and calcium causes the cell to depolarize and voltage-gated calcium channels to open d. Calcium ions activate calcium channels and a graded potential is producedarrow_forwardWhich of the following is the correct sequence of the neural chain of events set in motion by an environmental stimulus? (A) Receptors, afferent neurons, interneurons, efferent neurons, effectors (B) Receptors, efferent neurons, interneurons, afferent neurons, effectors (C) Interneurons, effectors, receptors, afferent neurons, efferent neurons (D) Effectors, interneurons, receptors, afferent neurons, efferent neurons (E) Effectors, receptors, afferent neurons, effer- ent neurons, interneuronsarrow_forward
- The conversion of an environmental stimulus into a nerveimpulse is called sensorya. conduction.b. conversion.c. transduction.d. transformation.arrow_forwardAs the strength of a depolarizing stimulus to an axon is increased, a. the amplitude of action potentials increases. b. the duration of action potentials increases. c. the speed with which action potentials are conducted increases. d. the frequency with which action potentials are produced increases.arrow_forwardWhich of these is most consistent with the same-object advantage? a. faster reaction times occur when a target is located within the same object that is receiving the participant’s attention, even if the participant is looking at another place within the object. b. faster reaction times occur when a target is located within the same object that is receiving the participant’s attention, except when the participant is looking at another place within the object. c. slower reaction times occur when a target is located within the same object that is receiving the participant’s attention, even if the participant is looking at another place within the object. d. slower reaction times occur when a target is located within the same object that is receiving the participant’s attention, except when the participant is looking at another place within the object.arrow_forward
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