Lecture Quiz #8

Ventilation refers to the process by which... A. air moves into and out of the lungs. B. ATPs are produced. C. gases are exchanged between the cells and the lungs. D. gases are exchanged between the blood and the cells. E. gases are exchanged between the air and the blood.

A. air moves into and out of the lungs.

Arrange the following entries in the order in which air contacts them as air is drawn into the body. a. trachea b. bronchiole c. pharynx d. alveoli e. larynx ... A. c, e, a, b, d B. e, c, b, a, d C. c, a, e, b, d D. c, a, e, d, b E. b, d, a, c, e

A. c, e, a, b, d

During a cough, what is responsible for constricting the size of the trachea? A. smooth muscle B. closure of the soft palate C. skeletal muscle D. cartilage E. epiglottis

A. smooth muscle

In which one of the following situations is hemoglobin most likely to bind oxygen? A. in a metabolically active tissue (e.g., muscle) B. in a tissue with a neutral pH C. in a tissue with a low partial pressure of oxygen D. in a tissue with a low pH E. in a tissue with a high temperature

B. in a tissue with a neutral pH

Which of the following structures is the location of gas exchange between the inhaled air and the blood? A. pleura B. bronchioles C. alveoli D. trachea E. bronchi

C. alveoli

Which of the following results from the stimulation by nerve impulses generated in the respiratory center when they arrive at the muscles involved in inspiration? A. opening of the trachea B. downward movement of the ribs C. contraction of the diaphragm D. increase in air pressure in the lungs E. reduction in the efficiency of oxygen transported by the blood

C. contraction of the diaphragm

The respiratory control center is located... A. in the right lung. B. in the pulmonary arteries. C. in the medulla oblongata. D. throughout the arteries. E. in the pulmonary veins.

C. in the medulla oblongata.

When air entering the respiratory tract leaves the pharynx, it next enters the... A. bronchi. B. sinuses. C. larynx. D. alveoli. E. bronchioles.

C. larynx.

Which of the following is a penetrating wound resulting in collapse of the lung? A. mesothelioma B. pneumonia C. congestive heart failure D. pneumothorax E. cystic fibrosis

D. pneumothorax

All of the following are part of an individual's vital capacity EXCEPT which one? A. inspiratory reserve B. expiratory reserve C. tidal volume D. residual volume

D. residual volume

Carbon dioxide is carried from the tissues to the lungs by a variety of mechanisms. Which of the following lists these mechanisms in order representing the mechanism that carries the most carbon dioxide to the mechanism that carries the smallest amount? ... A. carbaminohemoglobin—dissolved in plasma—bicarbonate B. bicarbonate—dissolved in plasma—carbaminohemoglobin C. dissolved in plasma—bicarbonate—carbaminohemoglobin D. carbaminohemoglobin—bicarbonate—dissolved in plasma E. bicarbonate—carbaminohemoglobin—dissolved in plasma

E. bicarbonate—carbaminohemoglobin—dissolved in plasma

A condition in which wheezing occurs with breathlessness and a persistent cough, and yields yellowish or greenish phlegm is... A. lung cancer. B. asthma. C. anemia. D. lupus. E. bronchitis.

E. bronchitis.

Which of the following occurs as air is drawn through the nose? A. Air is warmed, filtered, and humidified. B. Carbon dioxide is removed from the air and replaced with oxygen. C. Harmful allergens and other toxic materials such as cigarette smoke and asbestos are removed. D. Air is mixed with odorants to produce smells. E. Water is removed, and the air becomes drier.

A. Air is warmed, filtered, and humidified.