BMS 300 Exam 4 (A+ GRADED)

Function of the Respiratory System correct answers 1. Gas Exchange 2. pH regulation of blood How does O2 enter the blood stream? correct answers It binds to Fe on Hemoglobin of erythrocytes How do we carry CO2 to the lungs correct answers In the form of bicarbonate HCO3- which is facilitated by carbonic anhydrase H2CO3 Functions of Carbonic Anhydrase correct answers 1. Regulate pH with H+ 2. Remove CO2 Which 4 parts make up the conducting zone? correct answers 1. Larynx (Epithelial Cells) 2. Trachea (Epithelial Cells/ Hyaline Cartilage rings) 3. Bronchi (Epithelial Cells) 4. Bronchioles (smooth muscle wrapped single layer of Epithelial cells) Bronchiole lumen is called a... correct answers mucus membrane. Excess constriction and mucus cause blockage Mast cell response in the lungs correct answers Antibodies detect allergens and release histamine which bind to smooth muscle GCPR and cause contraction Poiselle's law correct answers Flow is proportional to r^4 so a little change increases gas transport Visceral and Parietal Pleura correct answers Made of mesothelial cells is filled with fluid to lubricate the lungs and create negative pressure What makes up the Respiratory zone? correct answers 1. Alveoli 2. Type I Pneumocytes 3. Type II Pneumocytes Anatomy of the Thoracic Cavity correct answers 1. Pleural Sac (Parietal Pleura & Visceral Pleura) 2. Diaphragm Define: Alveolus correct answers single layer of epithelial cells part of the exchange epithelium Gas Exchange correct answers O2-- air--blood--bind to hemoglobin CO2--blood--air