1 SEM ACC W/RAVEN CARDED
1 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781265486297
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 47, Problem 4A

Respiratory organs of invertebrates and vertebrates are similar in that

a. they use negative pressure breathing.

b. they take advantage of countercurrent flow systems.

c. they increase the surface area available for diffusion.

d. the air flows through the organ in one direction.

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Respiratory organs of invertebrates and vertebrates are similar in that a. they use negative pressure breathing. b. they take advantage of countercurrent flow systems. c. they increase the surface area available for diffusion. d. the air flows through the organ in one direction.
What occurs as air descends down through the conducting zone and respiratory zone structure? a. Cartilage rings are replaced by plates of Cartilage. b. Resistance to air flow decreases due to increased number of lobbies. c. Resistance to air flow increases as bronchioles diminish in diameter. d. Smooth muscle surrounding the bronchioles increases . e. The lining of the bronchioles changes from ciliated columnar to simple squamous epithelium.
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.
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Respiratory System; Author: Amoeba Sisters;https://www.youtube.com/watch?v=v_j-LD2YEqg;License: Standard youtube license