4. In order to prevent the alveoli walls from sticking together (collapsing) during exhalation, the ,is constantly secreted by alveoli cells. d. Dust e. Hormones a. Mucus b. Oxygen c. Surfactant

Q: Most of the carbon dioxide in the blood is carried in the form of a. dissolved CO2 b.…

A: The respiratory system is the network of organs and tissues that helps an individual breathe. It…

Q: Oxygen moves from an area of higher concentration to an area of lesser concentration in the air sacs…

A: Respiration is the process in which there is the movement of air into and out of the lungs. In this…

Q: 16. The carbon dioxide molecules present in the lungs was produced in: A. The plasma space B. The…

A: During aerobic respiratory, oxygen is utilised by the organism to oxidize respiratory substrates…

Q: During expiration, the diaphragm A. contracts and moves downwards B. relaxes and moves upwards C.…

A: The diaphragm is a thin muscular membrane that is present at the base of the chest and separates the…

Q: During carbon dioxide transport, a typical Bohr effect takes place at the _________ when ________…

A: Bohr effect - The effect of pH and  CO2 concentration on the binding and release of oxygen by…

Q: For gas exchange to be most efficient, the respiratory membrane must be a. at least 3 μm thick b.…

A: Efficient gas exchange in the respiratory system relies on diffusion, where gases flow from areas of…

Q: Type II alveolar cell…  A. senses 02 level and sends that information to the respiratory centers in…

A: Produces surfactant to counteract the surface tension that would collapse the alveoli

Q: Among the factors that influence breathing rate and depth, the most important are changing levels of…

A: The respiratory system is regulated by respiratory centers located in the medulla oblongata and…

Q: About 70% of carbon dioxide is transported as:    a. dissolved in plasma   b.…

A: The respiratory system has great importance in our day to day life. It is help in survival. It is…

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: Given the illustration below, which of the following ‘analogy’ are more likely similar to the image…

A: The respiratory system is a biological system in animals and plants that consists of particular…

Q: when carbon dioxide travelling in the plasma reaches the alveolus and is exhaled, then what happens…

A: Introductio:- the respiratory system are to provide adequate oxygen supply (O2) to meet the needs of…

Q: During a normal exhalation, the1. intra-alveolar pressure is greater than the atmospheric…

A: Exhalation or expiration is a process by which air is breathed out from the lungs. Normal expiration…

Q: What helps to maintain a concentration gradient between blood and the air in the alveolus?

A: In alveoli the lungs and the blood exchange oxygen and carbon dioxide during the process of…

Q: 20. During inspiration, ... a Tension is created b,/Hydrogen bonds are stretched c. Alveoli expand…

A: Inspiration is the act of drawing air into the lungs. The word inspiration comes from the Latin word…

Q: The maximum alveolar ventilation generated during heavy exercise under normal conditions is about…

A: The alveolar or pulmonary ventilation is the gaseous exchange between the alveoli and the outer…

Q: During acute alveolar hyperventilation, the blood 1. P(co2) increases 2. H(2)CO(3) decreases 3.…

A: Acute alveolar hyperventilation or Respiratory Hyperventilation is a disruption of the acid-base…

Q: 19. The narrowest part of laryngeal cavity is A. aperture of larynx O B. laryngeal vestibule O C.…

A: The mucosal cavity of the larynx extends from its superior opening, the laryngeal inlet, towards the…

Q: 1. Name two reasons why someone may have a lower lung capacity than the average lung capacity.

A: Introduction - It means your lungs are only working at a third of their normal capacity. Pulmonary…

Q: 7. Which of the following modes of ventilation ‘lock out’ the patient’s effort to breathe a.…

A: I'm assuming you're asking about whether ventilation can "lock out" a patient's ability to breathe…

Q: 45. The partial pressure of 0, (p0,) is in the air-sacs (alveoli) of our lungs and in the living…

A: The partial pressure of oxygen is a measurement of oxygen pressure in arterial blood.  It reflects…

Q: _____________ is secreted by type II alveolar cells in the mammalianlungs and prevents the collapse…

A: Answer is option e.) Surfactant.

Q: Ventilation of alveoli above the needs of metabolism tends to

A: Exchange of gases occurring between alveoli and the capillaries is called external respiration.…

Q: A type II alveolar cell in the lungs is important because it a. is the site of gas exchange w/…

A: Introduction: The cells that line the alveoli of the lungs are known as alveolar cells. There are…

Q: O Only (a) and (b) are correcl. 15. The residual volume keeps lungs inflated. is the normal volume…

A: Lung capacity or total lung capacity (TLC) is the volume of air in the lungs upon the maximum effort…

Q: Anatomical dead space includes air in the: A Conducting zone B Respiratory zone C Pleural sac D Both…

A: The respiratory system is a biological system consisting of specific organs and structures used for…

Q: The major function of the alveoli is to Select one: O a. moisten the air O b. filter dust and…

A: Alveoli are tiny air sacs present in the lungs which appears as a bunch of grapes. These are also…

Q: 7. The primary signal detected by the peripheral chemoreceptors is   A. An increase in PO2   B. A…

A: The receptor molecules that function to detect any changes in the pH or level of gases in the…

Q: If a person takes a normal breathe-volumeof 500ml, why does only 350ml actually ventilate the…

A: There are two important components of breathing namely ventilation and gas exchange. Ventilation is…

Q: 2. Oxygen and carbon dioxide are transported in and out of which respiratory structure? a. Trachea…

A: Respiration is a phenomenon of entry of oxygen inside the body and removal of  carbon dioxide out of…

Q: The rate of diffusion of a gas across the respiratory membraneincreases as thea. respiratory…

A: The lungs contain millions of balloon shaped structures called alveoli that serve as the site of…

Q: Which of the following modes of ventilation ‘lock out’ the patient’s effort to breathe a. Controlled…

A: Introduction:-  There are several modes of mechanical ventilation used to support patients who are…