BIOB33H3 Lecture Notes - Lecture 8: Cricoid Cartilage, Adenoid, Cricothyroid Ligament
Document Summary
Nasopharynx back of nasal cavity; funnel that connects respiratory and digestive tract (common pathway) Larynx air goes past larynx into trachea. Bronchioles do not have any cartilage on them (skeletal muscle) Alveoli 150 million per lung; gas exchange occurs here. This diagram shows the view of the respiratory epithelium. There is a constant production of mucus that is a line of defense for the body; especially the lungs. It has both epithelium (ciliated columnar cells) which move the mucus upwards; coordinated with each other. Lamina propria is a type of connective tissue for the respiratory membrane. Nasal conchae; superior, middle (etmoid bone), and inferior (has its own bone) this creates turbulence in the nasal cavity; movement regulates air temperature and moistness. Vibrissae nose hair which help with defense; protection from debris or carcinogens. Nasopharynx nose (air), sphincters are not tight so liquids/solids can enter. Pharyngeal tonsil most superior pair of tonsils at the back of the pharynx; adenoids.
