a)Gill lice infections result in lowered surface area to volume ratios in fish gill structure. True FalseLevels of carbon dioxide in the blood will not differ between infected and uninfected fish. Question options: True False The branched nature of capillaries in fish gills increases surface area, and thus the efficiency of exchange into/out of the blood stream lation. Question opti True False Gill lice, such as Ergasilus, attach themselves to the gill filaments of fish and feed ontheir blood and mucus (Figure 1). This leads to a range of negative impacts on thehost's respiratory system.5 mmRFigure 1. A gill arch from a fish showing the presence of several gill lice (Ergasilus) onthe delicate and numerous gill filaments. Filaments, which radiate downwardstowards the bottom of this image, are responsible for efficient gas exchange inaquatic environments.The gill filaments are thin, finger-like structures that are covered in tiny blood vesselscalled capillaries. These finger-like filaments have additional feather-like structurescalled secondary lamellae (Figure 2, Figure 3A). Oxygen from the water diffusesacross the thin walls of the capillaries and into the fish's bloodstream, while carbondioxide from the fish's metabolism diffuses out of the bloodstream and into thewater. The gill filaments are thin, finger-like structures that are covered in tiny blood vesselscalled capillaries. These finger-like filaments have additional feather-like structurescalled secondary lamellae (Figure 2, Figure 3A). Oxygen from the water diffusesacross the thin walls of the capillaries and into the fish's bloodstream, while carbondioxide from the fish's metabolism diffuses out of the bloodstream and into thewater.gill archskeletongillfilamentskeletongillarchsssbranchial arteriolespeperwithafferentarteriolegillfilamentsgilllamellaeblood flowefferentarterioleFigure 2. Diagram depicting the cross-sectional anatomy of a fish gill arch, with bloodvessels and gill filaments, each with secondary lamellae to maximize surface area foroptimal oxygen uptake during aquatic respiration.

Gill structure in fish is composed of thin, flat filaments that are highly vascularized. The…

a) Gill lice infections result in lowered surface area to volume ratios in fish gill structure. True False Levels of carbon dioxide in the blood will not differ between infected and uninfected fish. Question options: True False The branched nature of capillaries in fish gills increases surface area, and thus the efficiency of exchange into/out of the blood stream lation. Question opti True False

a) Gill lice infections result in lowered surface area to volume ratios in fish gill structure. True False Levels of carbon dioxide in the blood will not differ between infected and uninfected fish. Question options: True False The branched nature of capillaries in fish gills increases surface area, and thus the efficiency of exchange into/out of the blood stream lation. Question opti True False

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter39: The Respiratory System

Section: Chapter Questions

Problem 1VCQ: Figure 39.7 Which of the following statements about the mammalian respiratory system is false? When...

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O The toxin causes inappropriate firing of neurons leading to periods of rapid twitching that infected individuals experience as summation leading to tetanus. QUESTION 6 Mammalian lungs are very different in structure compared to amphibian lungs. The lungs of mammals have highly complex branching patterns of airways. The lungs of amphibians are simpler and more sac-like. Over all, the lungs of mammals are capable of much greater rates of gas exchange compared to amphibians. Why is this? O The more complex structure provides more surface area across which gas exchange can occur. O A complex structure means that gases have more contact time with gases compared to a simpler structure. O Mammalian lungs are usually much bigger relative to their bodies compared to amphibian lungs. O The respiratory membranes of mammals are able to diffuse gases across them much faster than amphibians. QUESTION 7 Click Save and Submit to save and submit. Click Save All Answers to save all answers. P Type…
Figure 39.7 Which of the following statements about the mammalian respiratory system is false? When we breathe in, air travels from the pharynx to the trachea. The bronchioles branch into bronchi. Alveolar ducts connect to alveolar sacs. Gas exchange between the lung and blood takes place in the alveolus.
O The toxin causes inappropriate firing of neurons leading to periods of rapid twitching that infected individuals experience as surnmation leading to tetanus. QUESTION 6 Mammalian lungs are very different in structure compared to amphibian lungs. The lungs of mammals have highly complex branching patterns of airways. The lungs of amphibians are simpler and more sac-like. Over all, the lungs of mammals are capable of much greater rates of gas exchange compared to amphibians. Why is this? O The more complex structure provides more surface area across which gas exchange can occur. O A complex structure means that gases have more contact time with gases compared to a simpler structure. O Mammalian lungs are usually much bigger relative to their bodies compared to amphibian lungs. O The respiratory membranes of mammals are able to diffuse gases across them much faster than amphibians. QUESTION 7 Click Save and Submit to sve and submit. Click Save AL Answers to save all answers. P Type here…
Respiration In Chordata be by 1-Lungs 2-Trachea 3- Not any of the above
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