1 gas exchange involves 3 stages list and briefly describe the three stages 2 the part of an ani

Step 1: Gas exchange involves three stages: ventilation, diffusion, and perfusion. Ventilation i

Question

1. Gas exchange involves three stages. List and briefly describe the three stages. 2. The part of an animal's body where gas exchange occurs is known as the respiratory surface. 3. Gas exchange occurs via diffusion. If false, make it a correct statement. True False 4. The flow of water or air over a respiratory surface is called ventilation. 5. The diaphragm is a muscular partition that separates the thoracic cavity from the abdominal cavity. 6. From the nose or oral cavity, list the structures oxygen would pass through in the correct order. Nose/oral cavity -> pharynx -> larynx -> trachea -> bronchi -> lungs -> bronchioles -> alveoli 7. Match the following terms with their proper description: Bronchi - air passes into these from the trachea Surfactant - substances that keep the alveoli from collapsing and sticking shut Bronchioles - inflammation in these tubes is called bronchitis Pharynx - the passageway for both air and food Alveoli - site of gas exchange within the lungs Vocal cords - structures that air passes across to produce sound 8. When people think about breathing, they typically tend to think of inhalation. Briefly explain why this is inaccurate. 9. In humans, ventilation uses negative pressure breathing, which allows air to be drawn into the lungs. 10. Briefly explain how volume in your thoracic cavity changes during inhalation and exhalation. Be sure your answer includes how those changes in volume lead to air moving in and out. 11. A common misconception is that your body regulates breathing in response to levels of O2. What actually regulates respiration rate? 12. Oxygen-depleted blood traveling from your leg muscles goes directly to the lungs to get oxygenated without going through the heart. If false, make it a correct statement. A. True B. False 13. The total pressure of a mixture of gas is a combination of all the pressures of the different gases in the mixture. In other words, each gas in the mixture has a partial pressure. 14. A teacher is grading a short-answer question from an anatomy and physiology quiz. The short answer question is asking the student to describe the role of hemoglobin in humans. The student answered the question as "Hemoglobin carries oxygen throughout the body to cells that require it." If the teacher is correcting incorrect answers by giving written feedback, what would she write to this student?

1. Gas exchange involves three stages. List and briefly describe the three stages.
2. The part of an animal's body where gas exchange occurs is known as the respiratory surface.
3. Gas exchange occurs via diffusion. If false, make it a correct statement.
True
False
4. The flow of water or air over a respiratory surface is called ventilation.
5. The diaphragm is a muscular partition that separates the thoracic cavity from the abdominal cavity.
6. From the nose or oral cavity, list the structures oxygen would pass through in the correct order.
Nose/oral cavity -> pharynx -> larynx -> trachea -> bronchi -> lungs -> bronchioles -> alveoli
7. Match the following terms with their proper description:
Bronchi - air passes into these from the trachea
Surfactant - substances that keep the alveoli from collapsing and sticking shut
Bronchioles - inflammation in these tubes is called bronchitis
Pharynx - the passageway for both air and food
Alveoli - site of gas exchange within the lungs
Vocal cords - structures that air passes across to produce sound
8. When people think about breathing, they typically tend to think of inhalation. Briefly explain why this is inaccurate.
9. In humans, ventilation uses negative pressure breathing, which allows air to be drawn into the lungs.
10. Briefly explain how volume in your thoracic cavity changes during inhalation and exhalation. Be sure your answer includes how those changes in volume lead to air moving in and out.
11. A common misconception is that your body regulates breathing in response to levels of O2. What actually regulates respiration rate?
12. Oxygen-depleted blood traveling from your leg muscles goes directly to the lungs to get oxygenated without going through the heart. If false, make it a correct statement.
A. True
B. False
13. The total pressure of a mixture of gas is a combination of all the pressures of the different gases in the mixture. In other words, each gas in the mixture has a partial pressure.
14. A teacher is grading a short-answer question from an anatomy and physiology quiz. The short answer question is asking the student to describe the role of hemoglobin in humans. The student answered the question as "Hemoglobin carries oxygen throughout the body to cells that require it." If the teacher is correcting incorrect answers by giving written feedback, what would she write to this student?

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