CAMPBELL BIOLOGY,VOL.II >CUSTOM<
17th Edition
ISBN: 9781323803677
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 40.1, Problem 3CC
WHAT IF? Ø Suppose you are standing at the edge of a cliff and suddenly slip, barely managing to keep your balance and avoid falling. As your heart races, you feel a burst of energy, due in part to a surge of blood into dilated (widened) vessels in your muscles and an upward spike in the level of glucose in your blood. Why might you expect that this "fight-or-flight" response requires both the nervous and endocrine systems?
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WHAT IF? Suppose you are standing at the edge of acliff and suddenly slip, barely managing to keep yourbalance and avoid falling. As your heart races, you feela burst of energy, due in part to a surge of blood intodilated (widened) vessels in your muscles and an upwardspike in the level of glucose in your blood. Why mightyou expect that this “fight-or-flight” response requiresboth the nervous and endocrine systems?
20. The figure below shows the pathway through which nitric oxide (NO) triggers smooth muscle relaxation in a blood-
vessel wall. Which of the following situations would lead to relaxation of the smooth muscle cells in the absence of
acetylcholine?
arginine
Answer:
activated.
nerve terminal
-acetylcholine
NO
endothelial cell
RAPID DIFFUSION OF NO
ACROSS MEMBRANES
NO bound to
guanylyl cyclase
GTP
cyclic
GMP
RAPID RELAXATION
OF SMOOTH MUSCLE CELL
smooth muscle cell
A) A smooth muscle cell that has a defect in guanylyl cyclase such that it cannot bind NO
B) A muscle cell that has a defect in guanylyl cyclase such that it constitutively converts GTP to cyclic GMP
C) A muscle cell that has cyclic GMP phosphodiesterase constitutively active
D) A drug that blocks an enzyme involved in the metabolic pathway from arginine to NO
E) None of the above
Explanation:
Please help me with this question. More than one answer may be correct.
Gap Junctions ______.
Options:
A)
can be closed by increase [cAMP]
B)
are made of a protein complex called connexon
C)
are made of a protein complex called hemichannel
D)
can be closed by increase [Ca++]
E)
can be closed by decreased pH
Chapter 40 Solutions
CAMPBELL BIOLOGY,VOL.II >CUSTOM<
Ch. 40.1 - What properties do all types of epithelia share?Ch. 40.1 - VISUAL SKILLS Consider the idealized animal in...Ch. 40.1 - WHAT IF? Suppose you are standing at the edge of...Ch. 40.2 - MAKE CONNECTIONS How does negative feedback in...Ch. 40.2 - If you were deciding where to put the thermostat...Ch. 40.2 - Prob. 3CCCh. 40.3 - Prob. 1CCCh. 40.3 - Flowers differ in how much sunlight they absorb....Ch. 40.3 - Prob. 3CCCh. 40.4 - If a mouse and a small lizard of the same mass...
Ch. 40.4 - Prob. 2CCCh. 40.4 - Prob. 3CCCh. 40 - Prob. 40.1CRCh. 40 - Is it accurate to define homeostasis as a constant...Ch. 40 - Given that humans thermoregulate, explain why your...Ch. 40 - Why do small animals breathe more rapidly than...Ch. 40 - Level 1: Knowledge/Comprehension 1. The body...Ch. 40 - Prob. 2TYUCh. 40 - Consider the energy budgets for a human, an...Ch. 40 - Prob. 4TYUCh. 40 - Prob. 5TYUCh. 40 - Prob. 6TYUCh. 40 - Prob. 7TYUCh. 40 - Prob. 8TYUCh. 40 - EVOLUTION CONNECTION In 1847, the German biologist...Ch. 40 - SCIENTIFIC INQUIRY Eastern tent caterpillars...Ch. 40 - SCIENCE. TECHNOLOGY. AND SOCIETY Medical...Ch. 40 - WRITE ABOUT A THEME: ENERGY AND MATTER In a short...Ch. 40 - 13. SYNTHESIZE YOUR KNOWLEDGE These macaques...
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