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 7MC
The nutrient blood supply of the lungs is provided by (a) the pulmonary arteries, (b) the aorta, (c) the pulmonary veins, (d) the bronchial arteries.
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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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- Fill in the space with the appropriate word from the word-bank below; causing During inhalation, the diaphragm and intercostal muscles 36.... 37................ in the volume of the chest-cage. This creates 38............... pressure in the lungs and causes air to flow from 39................... During exhalation, the diaphragm and intercostal muscles 40................... causing 41.................. of the volume of the chest-cage. This creates 42................. pressure in the lungs and causes air to flow from 43................... ● Inside to outside ● ● ● ● ● Expansion Compression Relax Constrict Outside to insidearrow_forwardWhich of the following respiratory systems is notclosely associated with a blood supply?(A) the lungs of a vertebrate(B) the gills of a fish(C) the tracheal system of an insect(D) the skin of an earthwormarrow_forwardWhen the inspiratory muscles contract, (a) only the lateral dimension of the thoracic cavity increases, (b) only the anteroposterior dimension of the thoracic cavity increases, (c) the volume of the thoracic cavity decreases, (d) both the lateral and the anteroposterior dimensions of the thoracic cavity increase, (e) the diaphragm bulges superiorly.arrow_forward
- When individuals are hyperventilating, they are told to breathe into a paper bag or into their cupped hands. (a) Explain why this increases blood carbon dioxide levels. (b) What will this do to the breathing rate?arrow_forwardA 5-year-old child announces to her parents (former A&P students) that she is going to hold her breath until she is allowed to watch more television. The parents are not worried. (a) Explain why the parents are not worried. (b) Explain how the child’s blood carbon dioxide levels and blood hydrogen ion and bicarbonate ion levels change while she is holding her breath.arrow_forwarda build up in fluids in the lung will result in a reduced amount of oxygen in the blood returning to the heart from the lungs because A) the bronchioles have dilated B) there is less hemoglobin in the blood C) the surface area for external respiration has been reduced D) the permeability of the lung capillaries has been increasedarrow_forward
- Describe the purpose of: (1) surfactant, (2) the ribs, (3) therespiratory membrane, (4) the diaphragm, (5) alveolarmacrophages, and (6) the bronchial artery.arrow_forwardAir moves into the alveoli as a result of the: (A)Decreased pressure in the chest cavity (B) Relaxation of the diaphragm (C) Rising pressure in the alveoli (D) Rising pressure in the chest cavityarrow_forwardGas exchange in the lungs takes place in the (a) alveoli, (b) bronchioles, (c) segmental bronchi, (d) lobar bronchi.arrow_forward
- Gas exchange at the blood air barrier is efficient because, (a) the differences in partial pressure are substantial. (b) the gases are lipid soluble. (c) the total surface area is large. (d) a, b, and c are correct.arrow_forwardA man gets stung by an insect leading to severe allergic reaction. He experiences shortness of breath and becomes unconscious. (a) Which type of shock does the man experience? Briefly describe and explain the change in peripheral resistance, blood pressure, blood volume and heart rate. (b) Suggest a medication that can treat this kind of shock and help the man to breath. Briefly explain how it works.arrow_forwardThe right primary bronchus is steeper (i.e. more vertical) and therefore: a) must accommodate the position of the heart b) can conduct more air c) will show greater reduction in wall diameter in an asthma attack d) is more often affected when aspiration of stomach contents occursarrow_forward
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