BIOL 240 Lecture Notes - Lecture 26: Granulocyte, Endocardium, Megakaryocyte
Document Summary
Network of connected tubes to a muscular pump (heart) and constituting a closed system. Two components: cardiovascular system: blood, heart, and blood vessels, lymphatic system: lymph nodes and lymph vessels. Transportation: carbon dioxide, oxygen, nutrients, metabolic wastes, hormones. Regulation: body temperature, absorbs and distribute heat, ph levels, body ph is 7. 35-7. 45. Protection immune system: white blood cells, prevents blood loss by forming blood clots. Blood composed of: liquid matrix: plasma, cells and cell fragments formed elements, erythrocytes and platelets and white blood cells, heaviest is the red blood cells or erythrocytes. 1 celsius degree warmer than body temperature. Most are found in body tissues, not in bloodstream. Enter blood vessels by diapedesis: squeeze through capillary walls. Two types: granulocytes, agranulocytes, without the particles in the cytoplasm. Very small compared to white blood cells. They organize in a single row as they pass through capillaries: called (cid:862)rouleaux(cid:863) Contain hemoglobin: 280 millions per cell.
