BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 35, Problem 3SA
Countercurrent flow of water and blood increases the efficiency of gas exchange in ______.
| a. fishes | c. birds |
| b. amphibians | d. all of the above |
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Countercurrent flow allows_____ to maximize their oxygen uptake from water. a. fishes c. frogs b. flatworms d. whales
The countercurrent exchange system for gills relies on diffusion to diffuse
oxygen into the blood. This system works because the blood in the gills.
a. increasing
encounters [Select] b. decreasing
water as the blood moves from [Select]
a. arteries
[Select] b. capillaries
c. Veins
✰ concentrations of oxygen in the
a.arteries
b. capillaries to
C. veins
through the capillaries. This also ensures that
a. less
blood always has [Select] b. more
c. the same amount of
oxygen than the water for
continued diffusion.
The primary function of the pleural membranes is ____
A. to decrease friction and allow the lungs to move within the thoracic cavity is
B. to decrease surface tension by producing surfactant
C. to prevent the lungs from putting pressure on the heart and surrounding vessels
D. to prevent respiratory infections
Chapter 35 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 35 - Respiratory proteins such as hemoglobin...Ch. 35 - In______, gas exchange occurs at the body surface...Ch. 35 - Countercurrent flow of water and blood increases...Ch. 35 - In human lungs, gas exchange occurs at the...Ch. 35 - Prob. 5SACh. 35 - During inhalation, ________. a. the thoracic...Ch. 35 - What type of metal associates with hemoglobin?Ch. 35 - Prob. 8SACh. 35 - Prob. 9SACh. 35 - The medulla oblongata ___________. a. produces...
Knowledge Booster
Learn more about
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
- The majority of oxygen in the blood is transported by ________. a. dissolution in the blood b. being carried as bicarbonate ions c. binding to blood plasma d. binding to hemoglobinarrow_forwardMost oxygen transported in human blood______ . a. is bound to hemoglobin b. combines with carbon to form carbon dioxide c. is in the form of bicarbonate d. is dissolved in the plasmaarrow_forwardMarine mammals are able to hold their breath for extended periods underwater because a. unlike humans, they don’t hypoventilate. b. partial pressure of carbon dioxide does not increase underwater. c. myoglobin in muscle tissue provides an oxygen reserve. d. the brains of marine mammals do not have receptors that respond to impulses initiated in the aortic and carotid bodies.arrow_forward
- According to the Fick equation, the fish gill is an effective gas exchange surface because... A. It has a high blood-to-water diffusion distance B. The total surface area of the lamellae is very large C. The scaphognathite maintains a constant flow of water across the gill D. The gill tissue is supported by the surrounding water E. All of the abovearrow_forwardThe respiratory protein hemocyanin_____ . a. contains iron b. occurs only in vertebrates c. transports oxygen in some invertebrates d. colors hemolymph redarrow_forwardWhich of these is a true statement?a. In lung capillaries, carbon dioxide combines with water toproduce carbonic acid.b. In tissue capillaries, carbonic acid breaks down to carbondioxide and water.c. In lung capillaries, carbonic acid breaks down to carbondioxide and water.d. In tissue capillaries, carbonic acid combines with hydrogenions to form the carbonate ion.e. All of these statements are true.arrow_forward
- Which of the following is a true statement? A. The concentration of oxygen in water is greater than that in air. B. In animals with gills, ventilation helps to reduce the thickness of the boundary layer. C. Countercurrent flow at the gas-exchange surface results in the diffusion gradient across surface. D. Mammalian lungs requires the diaphragm because the lungs are relatively stiff and filled with parabronchi.arrow_forwardIf partial pressure of oxygen were about 35 MMHG and the capillaries then a. the cells would not need extra oxygen b. CO2 pressure would be very low in the cells c. it would not be able to diffuse into the tissue cells d. it would easily travel and capillaries and if used to the needy cellsarrow_forwardO2 bound to hemoglobin: a. acts the same as physically dissolved oxygen b. Comes off the hemoglobin (dissociates) more easily as you increase the oxygen partial pressure c. exerts a partial pressure d. Comes off the hemoglobin (dissociates) more easily as you increase the acidity (decrease the pH) e. all the options are correct 2. Air convection in mammals is driven by a smaller pressure gradient than blood convection because: a. Bronchioles have a greater resistance to flow than arterioles b. bronchioles tend to have a smaller radius than arterioles and capillaries c. air is easier to move with pressure gradients than blood d. air generally travels farther in your body than does blood e. air is heavier than blood 3. The rate of diffusion of gases is NOT determined by which of the following? a. The area of the surface across which diffusion is occurring b. The mechanical energy…arrow_forward
- An obstruction in the trachea could cause: A. A drop in the body's pH B. An increase in the body's pH C. Acidosis D. Both A & Carrow_forwardThe enzyme carbonic anhydrase a. causes the blood to be more basic in the tissues. b. forms carbonic acid in the blood. c. actively transports carbon dioxide out of capillaries. d. is active only at high altitudes. e. All of these are correctarrow_forwardWhich of the following statements is correct? a. Arteries carry blood away from the heart and veins carry blood to the heart. b. Arteries carry blood to the heart and veins carry blood away from the heart. C. All arteries carry oxygen-rich blood and veins carry oxygen-poor blood. d. Arteries carry oxygen-poor blood and veins carry oxygen-rich blood.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Photosynthesis & Respiration | Reactions | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=3XIyweZg6Sw;License: Standard YouTube License, CC-BY