ventilation, diffusion, and perfusion.

What is your respiratory system set up to take advantage of?DiffusionBulk Flow and DiffusionBulk Flow

Explain with examples the types of ventilation.

What is diffusion?The passive movement of particles from a high concentration to a low concentrationThe passive movement of particles from a low concentration to a high concentrationThe active movement of particles using energy from respirationThe passive movement of water though a semi-permeable membrane from an area of high concentration to an area of low concentration2Which of the following factors do not speed up diffusion?Small surface area to volume ratioIncrease in temperatureIncrease in concentration gradientLarge surface area to volume ratio3During ventilation, in which order does air enter the following structures to reach the lungs?Bronchi, bronchiole, trachea, alveoliTrachea, alveoli, bronchi, bronchioleTrachea, bronchi, bronchiole, alveoliBronchi, trachea, bronchiole, alveoli4Which one of the following characteristics would you expect to find in alveoli to make them efficient at gas exchange?Small surface areaRich supply of blood capillariesLong diffusion distanceThick walls5Which two mechanisms are important for maintaining the steep concentration gradients of oxygen and carbon dioxide that are necessary for gas exchange?Respiration and ventilationVentilation and circulationVentilation and excretionRespiration and circulation6During gas exchange:Oxygen moves down a concentration gradient from the air in the alveoli to the bloodOxygen moves down a concentration gradient from the blood to the air in the alveoliOxygen moves up a concentration gradient from the blood to the air in the alveoliOxygen moves up a concentration gradient from the air in the alveoli to the blood

When an increase in interstitial fluid in the lung tissue leads to an increased diffusion distance for gases, resulting in hypoxia, the condition is known as:Question 12Answera.bronchitisb.emphysemac.pulmonary edemad.pneumonia

L’hématose pulmonaire est optimisée à l'effort maximal par l’augmentation deALa perfusion pulmonaireBLa ventilation pulmonaireCLa solubilité des gaz respiratoiresDLa surface d'éshanges alvéolo-capilairesELa vitesse de circulation sanguine2015 EMD