Fundamentals of Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134396026
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 19RQ
The increasingly forceful labor contractions during childbirth are an example of (a) receptor activation, (b) effector shutdown, (c) negative feedback, (d) positive feedback.
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Generally, for a positive feedback arc to cause a change of a physiological variable, where must be the receptor?
Multiple answers: Choose all of the relevant answers from the choices below.
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a)Intracellular fluid
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2)Which of the following is NOT true regarding negative feedback loops and homeostasis?
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a. Homeostatic control systems cannot maintain complete constancy of the internal environment
b. The set point of some variable can be reset
c. It is always possible for physiological variables to be maintained in a relatively constant manner using homeostatic control systems
d. The stability of an internal environment variable is achieved by balancing inputs and outputs
e. In negative feedback systems, a change in the variable being regulated brings about responses that tend to move the variable in a direction that is opposite to the…
Chapter 1 Solutions
Fundamentals of Anatomy & Physiology (11th Edition)
Ch. 1 - Describe a learning outcome.Ch. 1 - Explain how to use your textbook most effectively...Ch. 1 - Define anatomy.Ch. 1 - Define physiology.Ch. 1 - Describe how anatomy and physiology are closely...Ch. 1 - What is the difference between gross anatomy and...Ch. 1 - Identify several specialties of physiology.Ch. 1 - Why is it difficult to separate anatomy from...Ch. 1 - Identify the major levels of organization of the...Ch. 1 - Identify the organ systems of the body and cite...
Ch. 1 - At which level of organization does a histologist...Ch. 1 - Prob. 12CPCh. 1 - Define eponym.Ch. 1 - Name the book that serves as the international...Ch. 1 - What is the purpose of anatomical terms?Ch. 1 - For a body in the anatomical position, describe an...Ch. 1 - Name two essential functions of the body cavities...Ch. 1 - Describe the various body cavities of the trunk.Ch. 1 - Define homeostasis.Ch. 1 - Which general mechanism of homeostatic regulation...Ch. 1 - Why is homeostatic regulation important to an...Ch. 1 - Prob. 22CPCh. 1 - What happens to the body when homeostasis breaks...Ch. 1 - Prob. 24CPCh. 1 - Prob. 25CPCh. 1 - Define equilibrium.Ch. 1 - When the body continuously adapts by using...Ch. 1 - LEVEL 1 Reviewing Facts and Terms 1. Label the...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - 2. cytology (a) study of tissues 3. physiology (b)...Ch. 1 - Prob. 17RQCh. 1 - The study of the structure of tissues is called...Ch. 1 - The increasingly forceful labor contractions...Ch. 1 - Prob. 20RQCh. 1 - A plane through the body that passes perpendicular...Ch. 1 - Prob. 22RQCh. 1 - Prob. 23RQCh. 1 - A learning outcome is best described as (a) a goal...Ch. 1 - (a) Define anatomy. (b) Define physiology.Ch. 1 - The two major body cavities of the trunk are the...Ch. 1 - What distinguishes autoregulation from extrinsic...Ch. 1 - Describe the anatomical position.Ch. 1 - Which sectional plane could divide the body so...Ch. 1 - Prob. 30RQCh. 1 - Prob. 31RQCh. 1 - Prob. 32RQCh. 1 - Besides the liver and most of the large intestine,...Ch. 1 - If the deep knife wound had been superior to the...
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- 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 stimuarrow_forwardWhich of the following is comparable to a positive feedback cycle? a) opening of voltage-gated Ca2+ channels in response to an action potential arriving at the axon terminal b) opening of voltage-gated Na+ channels in response to a depolarizing graded potential c) movement of K+ through leak channels d) operation of the Na+-K+ ATPase at rest e) opening of voltage-gated K+ channels in response to a depolarizing graded potentialarrow_forwardwhich of the following would be false? a) summation of B and C would not change membrane b) summation of B would be an IPSP c) summation of C and A = suprathreshold stimuli d) stimulation by A would depolarize cell e) repeated stimulation by A could spatially summate and reach threshold (This would be temporal summation)arrow_forward
- Activation of the parasympathetic branch of theautonomic nervous system(A) increases heart rate.(B) enhances digestion.(C) triggers release of epinephrine.(D) causes conversion of glycogen to glucose.arrow_forwardWhich of the following homeostatic control systems anticipate fluctuations in a variable and speed up the response even before it is altered? (a) reflex arc (b) negative feedback (c) feedforward mechanisms (d)positive feedback (e) afferent pathwayarrow_forwardPositive feedback loops maintain homeostasis. A) True B) falsearrow_forward
- Discuss the causes, signs and symptoms and treatments of three major homeostatic imbalances under each of the following systems;. a) respiratory system b) nervous system c)endocrine system d) reproductive systemarrow_forwardWhen a variation outside normal limits triggers a response that restores the normal condition, the regulatory process involves: (a) negative feedback. (b) positive feedback. (c) compensation. (d) adaptation.arrow_forwardWhich of the following statements relating to positive feedback mechanism is accurate? a)it usually controls rare events in the body b)it exhibits a cascading effect c) it exaggerate the original stimulus d) a and b e) a, b, and carrow_forward
- Which of the following statements (s) about the ESA is not true? a) ENS can stimulate the release of hydrochloric acid b) Parasympathetic nerve pathways can stimulate ENS c) ENS operates through local control d) The neuron in the ENS cannot affect motility without being directly linked to the CNS e) ENS consists of sensory and motor neuronsarrow_forwardDefine the following terms: (a) Aestivation (b) Placentation (c) Actinomorphicarrow_forwardWhich of the following terms does The processor of all information in the body belong to? a.)Control center b.)Homeostasis c.)Stimulus-response model d.)Negative feedback e.)Positive feedback f.)Feedback modelarrow_forward
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