Straighterline BIO 202-Chapter 23 with 100- correct answers already graded A+

A protective function of the respiratory system would be Select one: a. altering blood pH by changing blood CO2 levels. b. olfaction by drawing molecules into the nasal cavity. c. producing ACE which helps regulate blood pressure. d. preventing microorganisms from entering the body. d. preventing microorganisms from entering the body. Which of the following is NOT a function of the pseudostratified ciliated columnar epithelium of the nasal cavity? Select one: a. traps dirt and removes it from the air b. moisturizes the air c. exchanges oxygen and carbon dioxide d. warms the air c. exchanges oxygen and carbon dioxide The ring of cartilage that forms the base of the larynx is the Select one: a. epiglottis. b. thyroid cartilage. c. cricoid cartilage. d. arytenoid cartilage. e. cuneiform cartilage. c. cricoid cartilage. What is the function of the ciliated epithelium of the tracheobronchial tree? Select one: a. to cause coughing b. a mucus-cilia escalator c. move dirt toward the alveoli d. All of the choices are correct b. a mucus-cilia escalator What is the function of the nasal conchae? Select one: a. increases turbulence in the airflow b. olfaction c. increases surface area for cleaning, warming, and moisturizing the air d. increases turbulence and surface area for cleaning, warming, and moisturizing the air d. increase turbulence and surface area for cleaning, warming, and moisturizing the air Mr. Huff and Puff is getting ready to blow up a pool float because he can't find the air pump. He takes a big breath in after exhaling normally. The air he takes in is the Select one: a. inspiratory reserve volume. b. vital capacity. c. inspiratory capacity. d. tidal volume. c. inspiratory capacity. A greater than normal amount of CO2 in the blood is called Select one: a. hypercapnia. b. hypoxia. c. hyperdioxemia. d. hypodioxemia. a. hypercapnia. Two opposing mechanisms determine alveolar expansion: _______ leads to alveolar expansion while ______ opposes alveolar expansion. Select one: a. lung recoil; positive pleural pressure b. positive pleural pressure; lung recoil c. lung recoil; negative pleural pressure d. negative pleural pressure; lung recoil d. negative pleural pressure; lung recoil When the inspiratory muscles contract, Select one: a. thoracic volume increases. b. pleural pressure increases. c. the alveolar pressure increases. d. expiration occurs. e. thoracic volume decreases. a. thoracic volume increases. Rhythmicity of breathing involves Select one: a. conscious effort and control. b. stimulation of inspiration. Expiration is automatic. c. pontine respiratory group as a necessary part. d. a set pattern of inspiration-expiration that is always the same. e. the pre-Bötzinger complex of the ventral respiratory group. e. the pre-Bötzinger complex of the ventral respiratory group. Ventilation refers to the Select one: a. movement of air into and out of the lungs. b. gas exchange between the blood and the tissues. c. transportation of oxygen and carbon dioxide in the blood. d. gas exchange between the air in the lungs and the blood. e. respiration at the cellular level. a. movement of air into and out of the lungs.