ANPS 020 Lecture Notes - Lecture 18: Paranasal Sinuses, Circulatory System, Nasal Bone
6 Mar 2019
School
Department
Course
Professor
Document Summary
Exchange of gases between the atmosphere and blood. Protection from inhaled pathogens and irritating substances. Expiration = air out of the lungs. Oxygen moves from lungs to blood; carbon dioxide moves from blood to lungs. Transport in blood- works with cardiovascular system. Oxygen moves from blood to tissue, carbon dioxide moves from tissues to blood. The respiratory system conditions the air by warming, humidifying, and filtering. When air hits the trachea it should be at 37 degrees celsius and 100% humidity. Mucosa lines all body cavities that open to the outside of the body. Consists of the epithelium and a loose areolar connective tissue layer called the lamina propria. Has specific features depending on the function of the organ it lines. The upper respiratory system starts with the external nose, which is composed of the frontal bone, nasal bone, maxillary bone, and hyaline cartilages- which gives noses their distinct shape and size. Pseudostratified ciliated columnar epithelium with goblet cells.
