Untitled Notebook PDF - Respiration Structure

Structure · nose O Hair-filter larger dust particals from ② muscus (from mucus-secreting cells) moistens...

Structure · nose O Hair-filter larger dust particals from ② muscus (from mucus-secreting cells) moistens inhaled air muchs Icleaning] ↓ not / microorgaism & to pharynx > i the inhaled air to prevent the moist ↑ · D - - > - surface inside the lung from III/V respiratory (1///// ↑ 14/ ↑ cilica ↑ ③ drying muchs out [moisten] traps traps dust and ⑧ I · y · ·y * I ⑳ inhaled air tclean] cilitated mumy microorganism in epithelical cell acting cell # Cilica sweep mucus to pharynx coughed up / swallowed carity/ nasal nose ↳ mucus will be - nostrile into the stomach where microorganisms pharynx & will be killed by HC the inhaled air ⑦ blood in the capillaries warms to avod irratation of the lungs twarm] 2 prevents choking · opening of => ) covers the ↳ D prevent larynx prevent bolus from Stud , enterning the respiratory track a produced est e Common - change passage vocal for food & cords and causes air them to librate Trache a larger bronchicle - esophagus ·M - muscles S ciliated epitenese the Lumen L Bronchus bronchiole muscles smooth le the bronchus - m  &Sac r pulmonary artery The lung tissue is pulmonany4 I because vein ↓ spongy they provide the T of large amount air fills the space respiratory surface ⑧ where takes gas exchange place I wall one-celled & : thick capilaries = made of ↓ epithelium receive deoxygenated 4 secretes a watery fluid blood from the heart which keeps the inner surface t of air sac moist make the lung tissue pink in colour outer pleural membrane inner /rib rib (12) - Mean pleural & membrane - intercostal muscle - pleural fluid in I P membrane holds the 2 pleural carity together -- ② lubricant to reduce thoraic carity friction between the ↳ the chamber enclosed & pleural membranes during by the rib cage & the breathing moments diaphragm  of air sacs 0 There are large number a ↳ very large surface area of thin ② The walls air sacs are very one-celled thick reduces ) the ↳ air sacs the diffusion distance of gases surfaces of air sacs are moist ③ The inner ↳ oxygen in inhaled air dissolves the the water film lining inner in before surfaces of the air sacs diffusion takes place ⑦ Air sacs have rich supply of capilaries and ↳ rapid transport of gases to Me from the air sacs away of ⑦ The wall of air sacs are in very ↳ a steep concentration gradient between air sacs and the blood close contact with capilaries gases can be maintained ↳ reduces diffusion distance A exhaled air is warmer blood 4 exhaled air is warmed by in the capilaries  ①transported in its dissolved form in oxygen /plasma of blood Every small proportion] (not very soluble) red blood cells [most] @ transported in REASON : Piron-containing excellent or protein O an DRBCs are packed with naeoglobin- carrier readily to 0 ③ bind 4 ↳ the oxygen-carrying capacity "reversibe" of blood high or ↓ concentration in lungs oxygen Soxyhaemoglobin + haemoglobin low 02 concent in body liss nucleus ② mature RBI have no provides space for more haemoglobin ↳ disc shape ③ RBC have a biconcave to volume ratio & larger surface area ↳ provides a short distance for diffusion of Or a in and leave naemoglobin to reach 4 allows O2 RBI rapidly