The primary goal of this lab is to learn the names of many blood vessels. You will use the models provided as well as pictures in your lab book.…
Alveoli- Small sac like structures that serve as the gas exchange surfaces of the lungs.…
E. How would Cari’s lung compliance be altered as her alveoli fill with fluid due to pneumonia? Cari will have harder time breathing because her alveoli will not be able to efficiently exchange oxygen and CO2 in the blood.…
__________ has a greater partial pressure in the pulmonary capillaries than in the alveoli, so it diffuses into the __________.…
Now describe each tunic more fully by selecting its characteristics from the key below and placing the appropriate key letters on the answer lines. e,d b a, f,c Tunica intima Tunica media Tunica externa Key: a. b. c. d. innermost tunic most superficial tunic thin tunic of capillaries especially thick in elastic arteries e. f. contains smooth muscle and elastin has a smooth surface to decrease resistance to blood flow…
Alveoli- Terminal, microscopic, grape like air sac in the lungs. The pulmonary artery and pulmonary vein surround it. The alveolus is directly responsible for the exchange of oxygen and carbon dioxide.…
The gas exchange of oxygen and carbon dioxide takes place in the alveoli. Tiny blood capillaries surrounding the alveolar walls allow oxygen to be carry into the bloodstream. In exchange, carbon dioxide waste diffuses from blood into the alveoli from where it is exhaled. (P. 200)…
The lung key function is to bring air and blood into inside contact in the alveolar air sacs so that oxygen can enter the blood, and carbon dioxide can leave.…
2. Discuss the anatomical differences between frog and human hearts. The frog heart has a single ventricle and two atria.…
10.) How does partial pressure affect the movement of oxygen from the alveoli to the blood?…
form the pulmonary veins, which return the oxygenated blood to the left atrium. Backflow of…
Both the FRC and the anatomical dead space are essential in maintaining the constancy of alveolar gas tensions. To highlight there importance, it would be very useful to imagine the situation within the respiratory tract if they were not present. The consequence of these two factors not being present means that the inspired air would be equal to the normal tidal volume and the lungs would completely empty on expiration. This would mean that the air breathed in would equilibrate itself with the blood flowing in the lungs. Hence the pCO2 and pO2 levels in the blood flowing out of the lungs would have equilibrated itself with the gas tensions in the inspired air. Then when expiration takes place, no gas is present in the lungs as it has completely emptied itself. The effects of this are that on inspiration, diffusion would take place in between the inspired air and the blood. Due to this the blood pO2 levels would become atmospheric. This means the blood would have 20 Kpa of O2 and 0 Kpa of Co2 as the atmospheric air has a negligible concentration of CO2. As we have such a low concentration of CO2 in the lungs, there is a shift in the carbonic acid equilibrium. Due to this there is less carbonic acid produced as there is no CO2 and the blood becomes more alkaline. This is known as alkalosis. On expiration, as there…
The lung is a spongy organ made up of of irregularly shaped air spaces called Alveoli. The alveoli are lined by a single layer of flat cells and supported by a mesh of fine elastic fibers. The alveoli are surrounded by a rich network of pulmonary capillaries (Couch and Berger, 2004). Our lungs are a network of connected tubes that bring oxygen from the air into our blood, nourishing the trillions of cells that make up our bodies. The lungs also clean the blood of carbon dioxide waste created when cells use oxygen (Natural Geographic, 2012).…
Oxygen from the air passes to the surrounding capillaries (blood vessels) by through the walls of the alveoli which are very thin. It is the hemoglobin which is a red blood cell protein that move oxygen from the alveoli to the blood. Also, the carbon dioxide moves from the capillaries into alveoli…
Impaired gas exchange related to lung consolidation as evidenced by increased work of breathing. alveolar capillary membrane changes secondary to inflammation.…
