KINE 3012 Study Guide - Midterm Guide: Iron Lung, Intrapleural Pressure, Alveolar Pressure

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 3012
• Professor: Tara Haas

Document Summary

Functions of the respiratory system: (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) Brings oxygen - removes co2 - regulates ph (hydrogen ion concentraion) Defence against infecion - sound producion lung. Walls are reinforced ith a ring of carilage. No gas exchange respiratory zone- consists of: respiratory bronchioles, alveolar ducts, and alveolar sacs. Enables gas exchange 300 million alveoli total total surface area is 700 square feet cellular composition of lungs: All air ays are lined ith cuboidal epithelial cells, ciliated in the conducing zone, mucous secreing epithelial cells in the conducing zone. Bronchioles rapped ith smooth muscle cells, bronchiodialaion (good) and bronchioconstricion (bad) Macrophages in air ays and alveoli remove airborne paricles and bacteria, called resident immune cells. Type 1 alveolar cells are lat epithelial cells, and take up the majority of the alveolar all. Type 2 alveolar cells are rounded epithelial cells hich secrete surfactant hich allo s alveoli to stay in an open state.