Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 32.2, Problem 2CC
Summary Introduction
To explain:
How would shortening the stimulus duration affect the need for negative feedback if a hormone pathway provides a transient response to a stimulus.
Introduction:
The organs of endocrine system release chemical signal as hormones. A hormone is released by the organ system when it receives an internal stimulus. The glands of endocrine system release their content directly into the blood circulation and regulate other organs of the body. They have no ducts and are called as ductless glands.
The hormones of endocrine system is responsible for the regulation of body
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Chapter 32 Solutions
Campbell Biology in Focus
Ch. 32.1 - What properties do all types of epithelia share?Ch. 32.1 - Prob. 2CCCh. 32.2 - Prob. 1CCCh. 32.2 - Prob. 2CCCh. 32.2 - Prob. 3CCCh. 32.3 - Is it accurate to define homeostasis as a constant...Ch. 32.3 - Prob. 2CCCh. 32.3 - Prob. 3CCCh. 32.4 - What is the function of the filtration step in...Ch. 32.4 - What advantage does uric acid offer as a...
Ch. 32.4 - WHAT IF? A camel standing in the sun requires much...Ch. 32.5 - Prob. 1CCCh. 32.5 - Prob. 2CCCh. 32.5 - WHAT IF? If blood pressure in the afferent...Ch. 32 - The body tissue that consists largely of material...Ch. 32 - Prob. 2TYUCh. 32 - Which process in the nephron is least selective?...Ch. 32 - Homeostasis typically relies on negative feedback...Ch. 32 - Prob. 5TYUCh. 32 - In which of the following species should natural...Ch. 32 - Prob. 7TYUCh. 32 - Prob. 8TYUCh. 32 - Prob. 9TYUCh. 32 - Prob. 10TYUCh. 32 - Prob. 11TYUCh. 32 - SYNTHESIZE YOUR KNOWLEDGE These macaques (Macaca...
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- Q5.5. Why do neurons generate an action potential, instead of simply relying on the opening of ion channels near the stimulus site to transmit information? Because, without the action potential, changes in Vm at the stimulus site might not reach the axon terminal Because without the action potential, the neuron would not depolarize Because action potentials help the body keep ion concentrations at appropriate levels Because, without the action potential, the neuron would not return to resting potential Submitarrow_forwardsolve for b)arrow_forwardQ4.1. The image below shows a neuron's response to a medium-intensity stimulus. Which of the options underneath it correctly shows a signal for a weaker stimulus? Time (ms) 60 Time (ms) Time (ms) 60 Time (ms) Time ms) 60arrow_forward
- Describe how blood sugar (e.g. glucose plasma concentration) is regulated with the hormones, insulin, and glucagon. For this feedback loop, identify the following components of the feedback loop: stimulus, receptor, control center, efferent pathway, effector, and response. Be comfortable with this feedback loop to be able to describe the effects of changing various components of the feedback loop.arrow_forwardIon channel-coupled receptors • G-protein-coupled receptors • Enzyme-linked receptors • Briefly describe what a G-protein is (explain by using the words GTPase, GTP and GDT) • Briefly describe how a G-protein-coupled receptor for the signal / information further into • Briefly describe how an enzyme-linked receptor carries the signal / information further into the cell.arrow_forward↑ @ Which statement is true? exocrine glands secrete chemical messengers called hormone directly in the blood stream an endocrine response is faster than a nervous response When a hormone binds to a specific receptor it triggers a series of reactions inside the cell O Steroid hormones bind to a receptor in the plasma membrane 11 Which of the following statements about the relationship between the nervous and endocrine systems is NOT correct? ↑ Hypothalamus controls a part of the endocrine system called the pituitary gland. Hypothalamus produces ADH Neurons of the sympathetic nervous system stimulate the production of hormones from the adrenal gland. None of these. с O % 4¢ 5p #/$ 3 £ 31 acer Oll MEAN A 6- & 18⁰ O 71 * 00 8² O 93 1 poi ✓arrow_forward
- 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_forwardWhat compounds or probes could you use to investigate (a) G-protein–mediated signal transduction, (b) nitric oxide signal transduction, and (c) calcium ion-dependent fluxes and effects.arrow_forward
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