_____________ is secreted by type II alveolar cells in the mammalianlungs and prevents the collapse of alveoli that would otherwise occurdue to surface tension at the interface of air and extracellular fluid.a. Hemoglobin b. Myoglobin  c. Mucus d. Water e. Surfactant

Q: The _________prevents most inspired particles such as dust from reaching the lungs.     A. action…

A: Lungs inhale oxygen through inspiration and exhale carbon dioxide through expiration. Air is…

Q: Immediately after the creation of an opening through the thorax intothe pleural cavitya. air flows…

A: Discussing about creation of an opening through the thorax into the pleural cavity.

Q: What is the advantage of breathing through the nose rather than the mouth? a. The nose warms,…

A: The breathing can be defined as the inhaling of oxygen and removal of carbon dioxide out of the…

Q: You have placed an advanced airway in a patient with a respiratory condition and his heart rate…

A: In general, we can see the increased heart rate in patients for whom advanced airway has been placed…

Q: Explain what caused the trend that you observed when you plotted duration of voluntary apnea as a…

A: Apnea is a condition of stopped breathing that is marked by no movement of the respiratory muscles…

Q: The rhythmic control of breathing is produced by the activity of inspiratory and expiratory neurons…

A: Breathing refers to a rhythmic activity that occurs due to the neuronal network's function within…

Q: The structures in the passageways of the lung which become paralyzed in the early stages of chronic…

A: Chronic bronchitis is when the bronchi are inflamed for a long time. Smokers are particularly prone…

Q: Which of the following maintains the patency openness) of the trachea? a) C- shaped cartilage rings…

A: The respiratory system of our body consists of lungs and accessory parts. The trachea is the part of…

Q: The lungs do not normally collapse because a. they are attached to the thoracic wall with parietal…

A: The respiratory system is the network of organs and tissues that help you relax. It incorporates…

Q: In human lungs, gas exchange occurs at the______ . a. bronchi c. alveoli b. bronchioles d. pleural…

A: The lungs are pyramid-shaped, paired organs present in the thoracic cavity of the body that are…

Q: 47 A 45-year-old woman with asthma comes to the physician because of shortness of breath for 3 days.…

A: Asthma is one among the common non communicable diseases that is present globally. The…

Q: Which part of the airway has the greatest amount of smooth muscle?   A. Trachea   B. Primary…

A: Lungs are part of the lower respiratory tract and provide the respiratory surface for gaseous…

Q: Which of the following patients has adequate respirations? a. 55 year old woman with paradoxical…

A: Assessment of respiratory system is essential to identify the lung function and associated disease…

Q: The process of respiration can be divided in several steps. Which of the following is the first one?…

A: Respiration is a process by which gas exchange take place between air and organism's cells. The…

Q: The source of pulmonary surfactant is:- a. the visceral pleura. b. bronchial glands. c. alveolar…

A: Pulmonary surfactant is the blend of lipids and proteins, that are secreted via epithelial type II…

Q: Respiratory organs of invertebrates and vertebrates are similar in that a. they use negative…

A: Breathing is described as the movement of air between the atmosphere and the lung. It involves two…

Q: Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory…

A: Each alveolus is composed of a thin layer of squamous epithelial cells that are highly permeable and…

Q: The partial pressure of carbon dioxide is 45 mm Hg inthe blood and 40 mm Hg in the alveoli. What…

A: Partial pressure is the pressure of a single type of gas in a mixture of gases. The total pressure…

Q: Callisto has managed to escape Xena, and therefore Xena decides to rest for the night in a small…

A: Introduction  Breathing is the process of moving air into and out of the lungs in order to…

Q: Pulmonary edema can occur at high altitude this is happening because a. Of the swelling of the…

A: Pulmonary edema can occur at high altitude this is happening because  Of the leakage of fluid out of…

Q: Show the values of the alveolar PO2 and PCO2 in a normal person at rest. State TWO factors that…

A: PaO2 = measured the partial pressure of oxygen in arterial blood. PaCO2 = measured the partial…

Q: Inspiration occurs when:

A: Respiration is the process of exchange of gases. Inspiration is the movement of air from the…

Q: Which of these is incorrect concerning inspiration?a. The rib cage moves up and out.b. The diaphragm…

A: Option c

Q: Which of the following is NOT a function of the pleurae and pleural fluid? A. decreasing friction…

A: Pleurae and pleural fluid are related to the lungs. The lungs extend up to T10( 10th thoracic…

Q: The Law of LaPlace predicts that alveoli at constant wall tension are unstable because a. Small…

A: Surface tension – it is defined as the cumulative effect of the forces that are generated by the…

Q: Surfactant: a) causes a decrease in surface tension b) keeps alveoli dry c) causes an increase in…

A: Given: Surafctant is also called surface active antigen.Thise substances,which when added to the…

Q: The trachea A. Conducts air from the larynx into the bronchi B. Is lined with pseudostratified…

A: Trachea is also known as windpipe. Trachea starts from the larynx and run down the sternum. Trachea…

Q: The trachea bifurcates into ______________________________. a. secondary bronchi b. primary bronchi…

A: Trachea is a tube-like organ which connects the larynx to the lungs. It conducts the transports of…

Q: Select one: O a. right primary bronchus O b. alveoli O c. left primary bronchus O d. bronchiole O e.…

A: Various internal organs inside our body has varied functions. They have a crucial role in the…

Q: During expiration, the intra-alveolar pressure isa. lower than the pleural pressure.b. greater than…

A: Intra-alveolar pressure: Intra-alveolar pressure is the pressure that is occupied inside the alveoli…

Q: Which of the following occurs for expiration to occur? a. the thoracic volume decreases b. the…

A: Respiration is the process which involves the movement of oxygen from external environment towards…

Q: Which of the following statements about the removal of inhaled dust from the respiratory system is…

A: There are many dust particles in the air we are going to inhale but our respiratory system is quite…

Q: Which of the following is considered the structural and basic functional unit of the lung that is…

A: Alveoli is basic unit of lungs in which there are gaseous exchange had been done during respiration…

Q: oropharyngeal airway

A: An oropharyngeal airway is also known as OPAs. It is used in pediatric patients who are unconscious.…

Q: When ventilation is not sufficient, which of thefollowing occurs?a. The capillary constricts.b. The…

A: Ventilation, also known as breathing is a process through which air moves inside and outside the…

Q: The functions of C-shaped tracheal cartilages are to prevent collapse or over-expansion of the…

A: Cartilage is a type of connective tissue which is formed from chondrocytes .

Q: In an infant born prematurely, surfactant production may have not been adequate to maintain alveoli…

A: Lungs are the respiratory organs which receive oxygen from the environment and supply the oxygen to…

Q: Select the disease which makes lungs lose its elasticity due to the inflammation of alveoli. A. Lung…

A:

Q: The alveoli in the lungs where gas exchange occurs are composed of a simple squamous epithelium.…

A: Respiration is the metabolic process of taking in oxygen and giving out carbon dioxide. This process…

Q: A section of the lung that receives its own tertiarybronchus is called the ________.a.…

A: The respiratory system is known to contain several components but the most important organ is the…

Q: During respiration, oxygen is inhaled through the airways into the alveoli where gas exchange…

A: According to Fick's Law of Diffusion, the rate of diffusion across a membrane increases as follows:…

Q: A. lumen of air sacs 2. B. pulmonary venule C. pulmonary arteriole 4. D. alveoli 5. E. terminal…

A: Given diagram is of alveoli.Alveoli are the site of gaseous exchange. They are present at the end of…