BISC 102 Lecture Notes - Lecture 3: Pulmonary Alveolus, Bronchiole, Bronchus
Document Summary
Osmoregulation (p. 587b: how we maintain the concentrations of various salts; helps maintain electrolytes. How do we get the energy and building blocks: digestive system. How do we get energy to cells: through the circulatory system. How do we get the energy from food: by breaking it down. How do we get oxygen: from the respiratory system. How do we get oxygen to cells all over the body: bloodstream. Summary: contraction of diaphragm, air flow into body, nose/mouth, trachea, bronchus, bronchiole, alveolus, gas exchange at alveolus, relaxation of diaphragm, air flow out of body. Bronchioles: smallest branches of tubes within lungs. Dead-end in clusters of air sacs: alveoli. Surrounded by capillaries that remove o2 through the blood to the heart and delivers co2 through the blood from the heart. What is asthma: disease that effects your respiratory system, bronchi is narrowed (temporary, air gets in, the problem is getting air out. What are its symptoms: shortness of breath, wheezing, coughing.
