Multiple Choice
What effect does contraction of the diaphragm have on airflow through the airways of the lungs?
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22. The Respiratory System
Introduction to Lung Physiology
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Do fish primarily obtain oxygen from the air or from the water?
A
From both air and water equally
B
From the water
C
From dissolved carbon dioxide in water
D
From the air
Verified step by step guidance1
Understand the respiratory system of fish: Fish primarily use gills to extract oxygen from their environment.
Recognize the role of gills: Gills are specialized organs that allow fish to extract dissolved oxygen from water.
Differentiate between air and water respiration: Unlike mammals, fish do not primarily obtain oxygen from the air; they rely on the oxygen dissolved in water.
Consider the composition of water: Water contains dissolved gases, including oxygen, which fish utilize for respiration.
Conclude that fish obtain oxygen from water: Fish extract oxygen from the water using their gills, not from the air or dissolved carbon dioxide.
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