Ventilation in the capillaries is matched to perfusion. This means that  a. blood pressure from capillaries must match the pressure from the arterioles b. gas pressure in the alveolar must match the pressure in the bronchioles c. ventilation is never profuse enough d. ventilation in the alveolar must match the blood flow passing over those alveiolar

Q: In a patient admitted in the hospital has ventilation of 3 lit/min and cardiac output is 2 lit./min.…

A: The V/Q ratio evaluates the matching of ventilation (V) to perfusion (Q). There is regional…

Q: Which of the following best describes the gas exchange that occurs in the lungs?    A. carbon…

A: Ans- c.  carbon dioxide diffuses from the capillaries into the alveoli

Q: Which of the following is found in the respiratory zone of the lung? A. Goblet cells B. Main bronchi…

A: The objective of the question is to identify the type of cells or structures that are found in the…

Q: If the transpulmonary pressure equals zero,a. a pneumothorax has probably occurred.b. the lungs…

A: If 'transpulmonary pressure becomes (alveolar pressure = intrapleural pressure), such as when the…

Q: Which of the following is where gas exchange occurs? A. alveoli B. trachea C. intercostal muscles…

A: During the process of gaseous exchange, oxygen moves from the lungs to the blood stream and at the…

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 statements is CORRECT? Select one: a. Reduction of atmospheric air pressure…

A: Alveoli are the sacs that are meant to bring about gaseous exchange from the blood. Alveolar PO2 is…

Q: Peripheral chemoreceptors in the aortic bodies and central chemoreceptors respond to changes in…

A: Peripheral chemoreceptors are the sensory extensions of the peripheral nervous system. These…

Q: After a person hyperventilates (such as by holding their breath), what can be detected on a…

A: Respiratory system- It is one of the systems in the human body that helps in the exchange of gases…

Q: Which of the following statements are true of the alveoli and pulmonary capillaries? (Read carefully…

A: During respiration, diffusion accounts for the majority of gas exchange. A concentration gradient…

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: Inspiration occurs when barometric pressure:   A. Is the same as alveolar pressure B. Is higher…

A: Alveolar pressure is determined whether air will flow into the lungs. The ability to breath is…

Q: If alveolar ventilation is 4200 mL/min, respiratory frequency is 12 breaths per minute, and tidal…

A: anatomic dead space is the space within the airways that do not allow gas exchange with the…

Q: At rest, Emma typically takes thirteen 400 mL breaths per minute and she has an anatomical deadspace…

A: The dead space is the volume of the air which is inhaled, however, this does not get exchanged…

Q: The exchange of gases that occurs between the alveolar sac and the pulmonary capillary

A:

Q: Given an alveolar pressure of 760 mm, an intrapieural pressure of 755 Hg and a tidal volume of 450…

A: lung compliance is a measure of the lung's ability to stretch and expand. It is given by  change in…

Q: On a cold day, the temperature of the air reaching alveoli is raised in the nasal passages because…

A: Within the two nasal passageways, separated by the nasal septum, there is a network of narrow…

Q: Contraction of the diaphragm and external intercostal muscles is an active process leads to: a.…

A: Respiration is an active process with two distinct steps - inhalation and exhalation. The process…

Q: Gas exchange between systemic blood vessels and the tissues is called a. Tubular secretion b.…

A: There are two forms of respiration which are- internal respiration and external respiration. In…

Q: Ali, aged 28, normally does not suffer from asthma. However, he has an asthma attack at his work.…

A: Asthma is a condition where the air passage of a person becomes narrow or shows signs of…

Q: Increasing the size of the thoracic cavity causes the alveolar pressure to:   A. Decrease B.…

A: The respiratory system is the system made up of a network of organs and tissues which helps in…

Q: During speech the circumference of the chest wall increases and decreases as it moves air in and out…

A: During speech the circumference of the chest wall increases and decreases as it moves air in and out…

Q: While a runner rests before a race, the hemoglobin in the blood returning to her heart is 75%…

A: The hemoglobin is a proteinaceous molecule that is responsible for the transportation of oxygen…

Q: airway resistance

A: Airway Resistance: It is defined as the measurement of impedance(amount of resistance) to the…

Q: What occurs as air descends down through the conducting zone and respiratory zone structure? a.…

A: The respiratory system is divided into two major zones, the conducting zone and the respiratory…