KIN 272 Chapter Notes - Chapter 22: Paranasal Sinuses, Bronchiole, Nasal Septum
Document Summary
Respiration involves four processes: pulmonary ventilation, external respiration, transport of respiratory gases in the blood, and internal respiration. Both the respiratory system and the cardiovascular system are involved in respiration. 22. 1 the upper respiratory system warms, humidifies, and filters air. The nose provides an airway for respiration. Bone and cartilage plates shape the external nose. The nasal cavity, which opens to the exterior, is divided by the nasal septum. Paranasal sinuses and nasolacrimal ducts drain into the nasal cavities. The pharynx extends from the base of the skull to the level of c6. The oropharynx and laryngopharynx are common passageways for food and air. Tonsils are found in the oropharynx and nasopharynx. 22. 2 the lower respiratory system consists of conducting and respiratory zone. Respiratory system organs are divided functionally into conducting zone structures (nose to terminal bronchioles), which filter, warm, and moisten incoming air; and respiratory zone structures (respiratory bronchioles to alveoli), where gas exchange occur.
