Pearson eText Biology: Science for Life with Physiology -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135214114
Author: Colleen Belk, Virginia Maier
Publisher: PEARSON+
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Textbook Question
Chapter 20, Problem 3LTB
Alveoli are ___________.
- small air sacs at the ends of bronchi in the lungs:
- the respiratory surface in mammals;
- surrounded by a net of capillaries:
- subject to damage because of exposure to tobacco smoke;
- all of the above are correct
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Part A: Below is the step-by-step path of air through the respiratory system, but the steps are not in correct sequence. Put them in order, numbering them from 1 to 8.
______ Air enters the alveoli.
______ Carbon dioxide passes out of the bloodstream, and is eventually exhaled.
______ Cilia and mucus trap tiny particles found in the air, and warm and moisten the air.
______ Air moves through smaller and smaller passageways called bronchi.
______ The trachea, or windpipe, then carries the air to the lungs.
______ Air enters the nose.
______ Oxygen passes into the bloodstream.
______ Air moves down the throat, or pharynx.
Patients with cystic fibrosis (CF) have a defect in which of the following parts of the respiratory system?
Group of answer choices
cilia
trachea
alveoli
columnar epithelial cells
mucus
Respiratory System in Insects (air-dried insect and whole mount of insect spiracle and trachea)
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Chapter 20 Solutions
Pearson eText Biology: Science for Life with Physiology -- Instant Access (Pearson+)
Ch. 20 - Describe how contraction of the diaphragm allows...Ch. 20 - Prob. 2LTBCh. 20 - Alveoli are ___________. small air sacs at the...Ch. 20 - Prob. 4LTBCh. 20 - Prob. 5LTBCh. 20 - Prob. 6LTBCh. 20 - Prob. 7LTBCh. 20 - Prob. 8LTBCh. 20 - Heart attacks ___________. are typically caused by...Ch. 20 - Prob. 10LTB
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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
- Describe the function of these terms and describe where they are located: main bronchus, trachea, alveoli.arrow_forwardDue to its partial pressure gradient, carbon dioxide diffuses from cells into tissue fluid and into the ________; in the lungs, carbon dioxide diffuses into the ________. a. alveoli; bronchioles b. bloodstream; bronchioles c. alveoli; bloodstream d. bloodstream; alveoliarrow_forwardFigure 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.arrow_forward
- Of the following, which does not explain why the partial pressure of oxygen is lower in the lung than in the external air? Air in the lung is humidified; therefore, water vapor pressure alters the pressure Carbon dioxide mixes with oxygen Oxygen is moved into the blood and is headed to the tissues Lungs exert a pressure on the air to reduce the oxygen pressure.arrow_forwardA partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the abovearrow_forward17. Cartilage is found in which of the following structures of the tracheobronchial tree? 1. Bronchioles 2. Respiratory bronchioles 3. Segmental bronchi 4. Terminal bronchioles A. 1 only B. 3 only C. 2 and 3 only D. 1 and 4 onlyarrow_forward
- Figure 16.9 Which of the following statements about the human respiratory system is false? a. When we breathe in, air travels from the pharynx to the trachea. b. The bronchioles branch into bronchi. c. Alveolar ducts connect to alveolar sacs. d. Gas exchange between the lungs and blood takes place in the alveolus.arrow_forwardIn the diagram below, label the parts of the respiratory system and the structures that enclose some of its partsarrow_forwardAll cilia of the upper respiratory tract move mucus to the: trachea O esophagus vestibule of the nose The last complete ring of cartilage in the respiratory tract as you move from the nose toward the lungs is in the: trachea bronchi O larynx O bronchiolesarrow_forward
- The concentration of O2 in the medium when it first reaches the respiratory surface is ______. higher in a respiratory system using unidirectional flow than one using bidirectional flow higher in a respiratory system using bidirectional flow than one using unidirectional flow equal to that of the air or water surrounding the animal in both unidirectional flow and bidirectional flowarrow_forwardF Main air way known as windpipe Cilia filters the air here. Branches of bronchi. Where gas exchange takes place. A muscle that helps A O A E B C D W E B G F C Garrow_forwardWhich part of the bronchial tree contains ciliated simple columnar epithelium as seen in the photo below 1. Bronchi 2. Bronchioles 3. Respiratory bronchioles 4. Terminal bronchiolesarrow_forward
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Respiratory System; Author: Amoeba Sisters;https://www.youtube.com/watch?v=v_j-LD2YEqg;License: Standard youtube license