BIOLOGY 12TH ED (LL) W/ CONNECT
12th Edition
ISBN: 9781264898091
Author: Raven
Publisher: MCG
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Chapter 47.2, Problem 2LO
Summary Introduction
To explain: The advantage of countercurrent flow.
Introduction: Gas exchange is the physical process by which gases move passively by the diffusion across a surface. Gases are constantly produced and consumed by
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Define crosscurrent
Explain how blood flow to the kidneys is decreased with exercise.
Describe the countercurrent exchange system that maintains the concentration gradient.
Chapter 47 Solutions
BIOLOGY 12TH ED (LL) W/ CONNECT
Ch. 47.1 - Prob. 1LOCh. 47.1 - Prob. 2LOCh. 47.1 - Compare evolutionary strategies for maximizing gas...Ch. 47.2 - Prob. 1LOCh. 47.2 - Prob. 2LOCh. 47.3 - Prob. 1LOCh. 47.3 - Prob. 2LOCh. 47.3 - Describe the breathing cycle of birds.Ch. 47.4 - Prob. 1LOCh. 47.4 - Prob. 2LO
Ch. 47.4 - Prob. 3LOCh. 47.5 - Describe the structure of hemoglobin.Ch. 47.5 - Predict hemoglobins oxygen affinity in various...Ch. 47.5 - Prob. 3LOCh. 47 - Prob. 1DACh. 47 - Prob. 2DACh. 47 - Prob. 3DACh. 47 - Prob. 4DACh. 47 - For a given PO2, how does oxyhemoglobin saturation...Ch. 47 - Prob. 1IQCh. 47 - Prob. 2IQCh. 47 - Prob. 1UCh. 47 - Increased efficiency of gas exchange in...Ch. 47 - Prob. 3UCh. 47 - Prob. 4UCh. 47 - Ficks Law of Diffusion states the rate of...Ch. 47 - Prob. 6UCh. 47 - Prob. 7UCh. 47 - Prob. 8UCh. 47 - When you take a deep breath, your stomach moves...Ch. 47 - Marine mammals are able to hold their breath for...Ch. 47 - Countercurrent flow systems do not occur in lungs...Ch. 47 - Respiratory organs of invertebrates and...Ch. 47 - Prob. 5ACh. 47 - During exercise more oxygen is delivered to the...Ch. 47 - Compare the operation and efficiency of fish gills...Ch. 47 - What happens when, during exercise, the oxygen...Ch. 47 - Explain how bacteria, archaea, protists, and many...
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- Countercurrent flow of blood and water is more efficient than concurrent flow because a … is maintained which drives oxygen from water to bloodarrow_forwardExplain the movement of fluid across capillary endothelial cells. How does balance of hydrostatic pressure and colloid osmotic pres-sure determine direction of net fluid flow?arrow_forwardExplain Baroreceptor Control of Vasopressin Secretion?arrow_forward
- Describe the stimulus for the release of atrial natriuretic peptide (ANP) and its three actions.arrow_forwardDescribe the mechanisms by which the kidneys regulateblood volume and erythrocyte production.arrow_forwardName a mechanism other than chemical factors that contributes toflow autoregulation?arrow_forward
- Which of the following is true regarding plasma colloid osmotic pressure ? 1) It is less than interstitial osmotic pressure 2) It decreases by significantly in the muscle capillaries as blood flows from the arteriole end to the venous end 3) It is primarily caused by the presence of the substances in the plasma such as sodium and potassium 4) It increases in response to an increase in plasma fibrinogen concentration asap pleasearrow_forwardWhat is the countercurrent exchange system? What substances are involved?arrow_forwardDefine pulse pressure and explain the physiological significance of this measurement.arrow_forward
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