GERON255 Lecture Notes - Lecture 24: Pannus, Tunica Media, Synovial Membrane
19 Apr 2016
School
Department
Course
Professor
Document Summary
Rheumatoid (chronic inflammatory: less common form (1% of adults) but 2-3 times more common in women (fingers, wrists, ankles, and feet, progression: Pannus grows with time and releases enzymes that destroy the cartilage. Cardiovascular system - heart, blood, and vessels. Lymphatic system lymphatic vessels and lymph nodes. Functions: o2, waste, co2, hormones to other areas of body, body temp, blood clots, prevent infection by scavenging for microbes and noxious chemical, platelets. Not true cells but fragments of cells. 55% of blood volume (90% water: coronary arteries. Supply oxygenated blood to the heart itself (cid:1) (cid:1) (cid:1) (cid:1) Atrial wall is smooth and ventricles wall has muscular ridges. Sa node or pacemaker located in the wall of the right atrium: depolarization is needed to transfer nerve impulses from cell to cell through the right and left atria. Problems: impulse from sa node cannot pass from atrium to ventricles due to fibrous connective tissue that partitions the ventricles from atria.
