INTRODUÇÃO À FISIOLOGIA CARDIOVASCULAR - FISIOLOGIA DE GUYTON - FISIOLOGIA HUMANA

INTRODUCTION TO CARDIOVASCULAR PHYSIOLOGY - GUYTON'S PHYSIOLOGY - HUMAN PHYSIOLOGY [email protected] Instagram:   / facilitandoamedicina   Support the channel: https://nubank.com.br/pagar/e34ys/j6T... or 00fe80f9-788d-4bbc-a35d-e59d863885a7 If any of you lacks wisdom, you should ask God, who gives generously to all without finding fault, and it will be given to you. The cardiovascular system can be divided into two main parts: the pulmonary circulation (small circulation), which carries blood from the heart to the lungs and from the lungs back to the heart; and systemic circulation (greater circulation), which carries blood from the heart to all the body's tissues through the arteries. Cardiac physiology studies the functioning of the heart as a muscular pump, responsible for propelling blood through the systemic and pulmonary circulation. The process involves alternating cycles of contraction (systole) and relaxation (diastole), electrically regulated, ensuring that oxygenated blood reaches the tissues and deoxygenated blood reaches the lungs. Diastole (Relaxation): The ventricles fill with blood coming from the atria. Systole (Contraction): The ventricles contract and pump blood into the aorta (body) and pulmonary artery. Electrical Conduction System The heart has self-excitability, generating its own electrical impulses. Sinoatrial Node (SA): The "natural pacemaker" that initiates the impulse. Conduction: The signal travels through the atria, atrioventricular (AV) node, bundle of His, and Purkinje fibers, ensuring synchronized contraction. ECG: The electrocardiogram records this electrical activity. #CardiovascularPhysiology #GuytonCardiovascularPhysiology #GuytonPhysiology #humanphysiology #physiology #heartphysiology #guyton