Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 18SAQ
(a) Why is it important that the trachea is reinforced with cartilage rings? (b) Why is it advantageous that the rings are incomplete posteriorly?
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why do you think the hyaline cartilage rings of the trachea are c -shaped rather than o -shaped?
Trachea do not collapse when there is not much air because they are –a) thick and muscularb) having cartilaginous ringsc) Have valvesd) supported by larynx.
(a) In humans, is there one pleural cavity surrounding both lungs or two separate pleural cavities, one surrounding each lung?
(b) Does this differ from the model lung?
Chapter 21 Solutions
Anatomy & Physiology (6th Edition)
Ch. 21.1 - Prob. 1CYUCh. 21.1 - Which part of the pharynx houses the pharyngeal...Ch. 21.2 - Which structure seals the larynx when we swallow?Ch. 21.2 - Which structural features of the trachea allow it...Ch. 21.2 - What features of the alveoli and their respiratory...Ch. 21.2 - A 3-year-old boy is brought to the emergency...Ch. 21.3 - The lungs are perfused by two different...Ch. 21.3 - Prob. 8CYUCh. 21.4 - What is the driving force for pulmonary...Ch. 21.4 - What causes the intrapulmonary pressure to...
Ch. 21.4 - What causes the partial vacuum (negative pressure)...Ch. 21.4 - Premature infants often lack adequate surfactant....Ch. 21.5 - Explain why slow, deep breaths ventilate the...Ch. 21.5 - Prob. 14CYUCh. 21.6 - You are given a sealed container of water and air....Ch. 21.6 - PO2 in the alveoli is about 56 mm Hg lower than in...Ch. 21.6 - Suppose a patient is receiving oxygen by mask. Are...Ch. 21.7 - Prob. 18CYUCh. 21.7 - What is the relationship between CO2 and pH in the...Ch. 21.7 - The dotted lines in the two graphs below represent...Ch. 21.8 - Which brain stem respiratory area is thought to...Ch. 21.8 - Prob. 22CYUCh. 21.9 - An injured soccer player arrives by ambulance in...Ch. 21.9 - Prob. 24CYUCh. 21.10 - What distinguishes the obstruction in asthma from...Ch. 21 - Cutting the phrenic nerves will result in (a) air...Ch. 21 - Which of the following laryngeal cartilages is/are...Ch. 21 - Prob. 3MCCh. 21 - The detergent-like substance that keeps the...Ch. 21 - Which of the following determines the direction of...Ch. 21 - When the inspiratory muscles contract, (a) the...Ch. 21 - The nutrient blood supply of the lungs is provided...Ch. 21 - Oxygen and carbon dioxide are exchanged in the...Ch. 21 - Which of the following would not normally be...Ch. 21 - Most oxygen carried in the blood is (a) in...Ch. 21 - Which of the following has the greatest...Ch. 21 - In mouth-to-mouth artificial respiration, the...Ch. 21 - Prob. 13MCCh. 21 - Prob. 14MCCh. 21 - Damage to which of the following would most likely...Ch. 21 - Prob. 16MCCh. 21 - Trace the route of air from the nares to an...Ch. 21 - (a) Why is it important that the trachea is...Ch. 21 - Briefly explain the anatomical reason why most men...Ch. 21 - The lungs are mostly passageways and elastic...Ch. 21 - Describe the functional relationships between...Ch. 21 - Discuss how airway resistance, lung compliance,...Ch. 21 - (a) Differentiate clearly between minute...Ch. 21 - Prob. 24SAQCh. 21 - (a) Define hyperventilation. (b) If you...Ch. 21 - Prob. 1CCSCh. 21 - Prob. 2CCSCh. 21 - Barbara Joley was in the bus that was hit...Ch. 21 - Barbara Joley was in the bus that was hit...Ch. 21 - Prob. 5CCSCh. 21 - Prob. 6CCSCh. 21 - Prob. 7CCS
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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
- Which structural features of the trachea allow it to expand and contract, yet keep it from collapsing?arrow_forwardWhich of the following correctly describes the transition from bronchi into smaller branches in the bronchial tree? a. More hyaline cartilage is found in the smaller passageways of the bronchial tree. b. The rings of cartilage completely disappear during the transition from the trachea into the bronchial tree. c. The lining changes from respiratory epithelium to stratified squamous epithelium. d. The amount of smooth muscle increases in the smaller passageways of the bronchial tree.arrow_forwardWhich of the following maintains the patency openness) of the trachea? a) C- shaped cartilage rings b) negative pressure of the thoracic cavity d) pseudostratified ciliated epithelium e) surfactant productionarrow_forward
- As mentioned in the chapter, sometimes it is necessary to install a permanent tracheostomy—for example, in smokers who develop laryngeal cancer. Besides interfering with the ability to speak, what sorts of health problems would you expect to see in an individual with a permanent tracheostomy, and why?arrow_forwardWhich of the following maintains the patency openness) of the trachea? a) С- b) negative pressure of the thoracic cavity d) pseudostratified ciliated epithelium e) surfactant production ped cartilage ringsarrow_forward1.) What are the forces that tend to make the lungs collapse? 2.) Enumerate the structures where gas exchange takes place. 3.) What is/are the significance of incomplete rings of tracheal cartilages?arrow_forward
- In the respiratory system of humans, there are two zones, conducting and exchange. (a) Name all the parts of the conducting zone and exchange zone (be specific). (b) which parts pf the respiratory tract have the incomplete cartilagenous rings.arrow_forwardBy what means are the lungs are attached to the walls of the thorax ? a. Panetal pleural membrane b. Visceral pleural membrane c. Diaphragm d. Mesenteryarrow_forwardThe trachea A. Conducts air from the larynx into the bronchi B. Is lined with pseudostratified collated columnar epithelium C. Is supported by smooth muscle D. Only (a) and (b) are correct.arrow_forward
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