BIO 161 Lecture Notes - Lecture 9: Central Chemoreceptors, Abdominal Cavity, Circulatory System
Document Summary
Includes: lungs, a series of chambers and tubes leading into the lungs, and structures in or part of the chest. Regulates ph of blood and interstitial fluid. Exchange of respiratory gases with atmosphere: take in o2, get rid of co2. Without it, cells cannot get enough atp/glucose to maintain life. Glucose + o2 atp + h2o + co2. Oxygen is necessary to obtain glucose necessary for life, a byproduct is co2, which we expel as a waste product. Respiration the process during which o2 and co2 are exchanged between the cells and the external environment. Respiration can be broken down into 4 steps: lungs: breathing (ventilation) bulk movement of air into and out of. One respiratory cycle = inspiration + expiration. Normal respiratory rate = 12 breaths/minute at rest. 1: external respiration exchange of respiratory gases (by diffusion) between the air in the lungs and the blood in the pulmonary capillaries. O2: atmosphere blood: gas transport by the cardiovascular system.
