BPK 105 Exam with Complete Solutions

BPK 105 Exam with Complete Solutions Describe the process by which more red blood cells are made in response to low oxygen. What nutrients are required for this process? Low blood oxygen levels stimulate red blood cell production by increasing the formation and release of the glycoprotein erythropoietin. Erythropoietin stimulates red bone marrow to produce more red blood cells. This negativefeedback mechanism increases the blood's capacity to transport oxygen and maintains homeostasis. Describe the functions of the heart, including the heart structure responsible for each function Generating blood pressure o Contractions of the heart generate blood pressure, which is required to force blood through the blood vessels. Routing blood o The heart separates the pulmonary and systemic circulations, which ensures the flow of oxygen-rich blood to tissues. Ensuring one-way blood flow o The vales of the heart ensure a one-way flow of blood through the heart and blood vessels. Regulating blood supply o Changes in the rate of heart contraction match blood flow to the changing metabolic needs of the tissues during rest, exercise, and changes in body position. Trace the flow of blood through the heart. Specify the various chambers, valves, and vessels and the function of each. 1. Deoxygenated Blood enters R. Atrium from systemic route via the superior and inferior vena cavas and from heart via the coronary sinus.