BIOB33H3 Lecture Notes - Lecture 10: Chordae Tendineae, Pulmonary Valve, Heart Valve
Document Summary
10 cardiovascular system: heart and blood and the. Cardiovascular system is a transport system that move substances through the body such as nutrients, oxygen, carbon dioxide, hormones and ions: also transports metabolic waste through kidney, transports leukocytes to aid fighting infectious agents. Plasma makes up 55% of whole volume of blood liquid matrix of blood. Formed elements 45% of whole blood blood cells and cell fragments: platelets 0. 1%, involved in blood clotting, leukocytes (wbc) 0. 1%, function in immune system. Basophils less than 1% of wbc. Monocytes 2-8% of wbc: erythrocytes (rbc) 99. 9%, transport oxygen and carbon dioxide. Rbc life span diameter: biconcave disc with thin central region, 7. 7 microns in, lacks cell organelles, lacks a nucleus (anucleated, lifespan approx. 120 days: form in red bone marrow, significance of a lack of a nucleus. Leukocytes or wbcs: 2 major classes consisting of 5 major types. Cell more flexible as it travels through circulatory system.
