Biology level

This causes a decrease in lung closet, (intrapulmonary pressure) which establishes the pressure side from the atmosphere (1 59 meg) to the alveoli (105 meg) which past results INSPIRATION. As oxygen is inhaled it enters the external m atomic number 18s (nostrils), from the external mares it moves into the nasal cavity which functions in moistening, filtering and warming of the air. After the nasal cavity the air moves into the interior(a) mares which is fixed behind the soft pallet of the roof of the mouth. at one time the air moves through the internal mares it moves down into the throat which is the passageway for sustenance and IR, it so moves down into the voice box which is the first part of the trachea. The larynx contains the epiglottis which is a cartilage flap that restricts food from going into the air pipe, and vice versa. As air moves down from the pharynx into the larynx the epiglottis closes the esophagi and affords the passageway for the air, to go through the glottis into the trachea. The trachea is lined with a mucous membrane which catches any debris that is left in the air.The trachea indeed forms 2 primary bronchi, one for the left lung and one for the right hand lung. The primary bronchi attach he trachea to the lung. The primary bronchi then outgrowth out into secondary bronchi which form the lobes of the lung. The left lung contains 2 secondary bronchi resulting in 2 lobes and the right lung contains 3 secondary bronchi which result in 3 lobes. The secondary bronchi then branch into tertiary bronchi, these then branch into smaller tubules called bronchioles.The first part of the bronchioles is know as the terminal bronchioles, which then sub-divide into respiratory bronchioles. The respiratory bronchioles then sub-divide into dental ducts around the recurrence of the dental ducts are numerous alveoli and alveolar sacs. Alveolar sacs consist of two casings of alveoli which share a common exculpateding. The two types of alveoli are type 1 and type 2 cells. Type 1 cells have a continuous lining of the alveolar wall, and type 2 cells are called septa cells and are found between type 1 cells, they are also fewer in number.Type 1 alveolar cells are the main alveolar cells for gas exchange. one time 02 has reached the alveolus it stinkpot then diffuse into the capillaries. The process of dispersion is when pressures move from a high pressure to a rower pressure through a pressure gradient. Oxygen is able to move from the atmosphere to the alveoli because it has a APP of McHugh and the Alveoli has a APP of McHugh. Once the oxygen moves from the atmosphere through the air passage into the alveoli it advise then diffuse into the capillaries where APP is McHugh. 2 is able to move from the alveoli into the capillaries due to the process of diffusion (high pressure to low pressure through a pressure gradient). Once the 02 enters the capillaries it is then picked up by erythrocytes (RUB s) where it attach ed to the hammed portion of the hemoglobin. APP in the store is McHugh. Once the 02 is in the Orbs it can then diffuse into the tissues where the APP is 40 meg. As oxygen is being inspired, CO is being expired in the confrontation direction. CO starts off in the tissues at a APPC of 45 meg, it then diffuses into the capillaries where its APPC is might.Once the CO is in the capillaries it can then attach to RUB where the degenerated business line now has a APPC of might. Once in the red agate line cells the CO can then diffuse into the alveoli where APPC is might. Once the CO enters the alveoli, the respiratory muscles then relax. Which then leads to the decrease in the size of the thorax, increase in pectoral pressure, decrease in lung size, and increase in lung pressure, which established the pressure gradient from the alveoli to the atmosphere, which the results in EXPIRATION.Once oxygen enters the capillaries from the alveoli it attaches to the hammed portion of the hemoglob in. A hemoglobin molecule consists of a protein called globing. Globing is made up of 4 polypeptide chain, each polypeptide chain contains a hammed portion, and at the center of each hammed portion is an iron molecule that oxygen can attach to. Therefore each hemoglobin molecule consists of 4 oxygen molecules. The oxygenated crosscurrent will then travel from the lungs, through the pulmonary veins, anchor into the left atrium of the heart.The AS leaf node will then send an appetite to the VA node. The AS node functions as a pacemaker of the heart which sets its rhythm. The AS node makes sure that the ventricle and the atria do not contract at the kindred time. Once the impulse is sent to the VA node, it is then passed on to the VA bundles, also known as the Bundle of His. The VA bundles then branch in to 2 unlike ranches, the right and left, which then move down the septum into the pureeing fibers.Forcing the blood through the bicuspid valve, into the left ventricle, which the n open the aortic seminar valve, forcing the blood through the aorta, into the group AB aorta, then into the common iliac artery, through the external iliac artery, to the femoral artery, which will then lead the blood to the deep artery of the thigh. The blood will then flow into the quadriceps of the muscle where there is an open wound, and this is where the blood will begin to clot. Blood Clotting or coagulation is a complex sequence of events (chemical reactions) that causes blood to go from liquid to gel.Consistency of blood is due to the formation of a network of fibers consisting of fibrin protein and it involves more than a cardinal chemicals called clotting grammatical constituents. Clotting factions include Ca ions phosphoric associated with lipids and a commixture of lepidopterist and phosphoric released from damaged tissues. The blood clotting process involves three major(ip) stages. 1) formation of praiseworthiness, 2) formation of thrombi, 3) and the formation of f ibrin. For this specific case there is an open wound in the quadriceps, which triggers the personate to use the adventitious clotting mechanism.The extrinsic clotting mechanism is used when there is tissue damage, bleeding and when the body is in need of rapid clot formation, this occurs within a few seconds. The damaged tissue then releases a tissue factor known as thermoplastic resin into the blood. The thermoplastic then activate a protein in the plasma called factor x, with the aid of calcium this then forms the enzyme known as praiseworthiness. Praiseworthiness is an enzyme that converts promoting to thrombi.Promoting is an sluggish enzyme in the plasma, with the help of praiseworthiness it can be born-again to thrombi which is an activated enzyme. For thrombi to be active ca+ must be presence. Thrombi is an activated enzyme which converts power to fibrin. Forefinger are soluble clotting proteins in plasma, this is then converted to fibrin with the help of thrombi. Fibri n are insoluble thread like proteins, which form across the wound, which form a net like structure that traps platelets and RUB s which creates a plug across the wound, which results in a stoppage of bleeding. interrogation 2