BIOL 2P98 Lecture Notes - Lecture 25: Internal Intercostal Muscles, Meninges, Pulmonary Valve
28 Feb 2016
School
Department
Course
Professor
Document Summary
Flexion (when the arm is being adducted (closer to the body) and extension = away from the body when the arm is being adducted. Proximal= close to the midline or towards the body. Distal= away from the body towards the extremities. Inversion: ankle is going medially towards the body. Eversion: ankle is going laterally away from the body. Major formation of skeletal muscle except cranium and mandible: endochondral ossification. The conducting portion is made up of: nasal cavities, nasopharynx, larynx, trachea, bronchii and bronchioles. Diaphragm and external/ internal intercostal muscles are the most important ones that allow you to breathe. Intercostal muscles increase their volume and move upward to allow lungs to expand-volume in thoracic cavity increases. Diaphragm relaxes, arches upward to reduce volume in the thoracic cavity. Transverse thoracis, obique and rectus abdominus aid in expiration. Depends on the electric recoil of the ribs, muscles and lungs diaphragmatic breathing= deep breathing. Contraction of the diaphragm provides the necessary changes.
