L5) composition and functions of the blood .pdf

Physiology Team 445 5 Composition and...

Physiology Team 445 5 Composition and Functions of the Blood EDITING FILE: OBJECTIVE - Main Text. Describe Cellular & non-cellular components of blood. - Important. Recognize functions of blood.. Define Erythropoiesis; leucopoiesis; - Dr’s notes. thrombopoiesis.. Recognize sites of RBC formation at different developmental age. - Girls' Slides. Describe different stages of RBC differenation.. Describe features of RBC maturation. - Boys' Slides. Describe regulation of RBC production & erythropoietin hormone - Extra secretion in response to hypoxia.. Recognize clinical conditions associated with high level of erythropoitein in the blood. [email protected] Editing file  Major component of circularity system 1- Heart 2- Blood 3- Blood vessels FUNCTIONS OF BLOOD 1. Transport O2, CO2, nutrient, hormones, waste product Oxygen from the lungs and nutrients from the digestive tract Metabolic wastes from cells to the lungs and kidneys for elimination Hormones from endocrine glands to target organs 2. Blood maintains (Homoeostasis): Regulation of body temperature, ECF pH Appropriate body temperature by absorbing and distributing heat Normal pH in body tissues using buffer systems Adequate fluid volume in the circulatory system 3. Protecting against infections (Immunity) White Blood Cells, Antibodies Synthesizing and utilizing antibodies Activating WBCs to defend the body against foreign invaders 4. Blood clotting prevent blood loss (Haemostasis) Activating plasma proteins and platelets Initiating clot formation when a vessel is broken BLOOD COMPOSITION 1. Cellular components (formed elements) 45% granular leukocytes: 1- neutrophils Red Blood Cells (Erythrocytes) 99% 2- eosinophils White Blood Cells (Leucocytes)