Electrocardiogram An electrocardiogram, commonly referred to as an ECG or EKG (from the German “Elektrokardiogramm“), is a non-invasive medical test that records the electrical activity of the heart over a period of time. It is a vital tool for diagnosing and monitoring various heart conditions. Here’s a comprehensive overview of the ECG: 1. The Heart’s … Read more
The pulse is the rhythmic expansion and recoil of an artery caused by the ejection of blood from the heart, specifically the left ventricle, during systole. It is one of the vital signs used to assess a person’s cardiovascular health and provides critical information about heart rate, rhythm, and the condition of the circulatory system. … Read more
Regulation of Blood Pressure: Blood pressure (BP) is the force exerted by circulating blood upon the walls of blood vessels. It is a critical parameter in the circulatory system, influencing the delivery of oxygen and nutrients to tissues and the removal of waste products. The regulation of blood pressure is a complex process involving multiple … Read more
Cardiac output and the cardiac cycle are fundamental concepts in cardiovascular physiology, describing how the heart functions to pump blood throughout the body. Understanding these processes is crucial for assessing heart health and overall circulatory function. Here’s a detailed note on cardiac output and the cardiac cycle: Cardiac Output (CO) Cardiac output is the volume … Read more
Regulation of Heartbeat: The heartbeat is regulated by the autonomic nervous system (ANS), which maintains the balance between sympathetic and parasympathetic influences on the heart. This balance ensures that the heart rate and rhythm meet the body’s immediate needs, whether it’s the “fight or flight” response or the “rest and digest” state. Here’s a detailed … Read more
Cardiac Conduction System The cardiac conduction system is a highly specialized and intricate network of nodes, fibers, and pathways embedded within the heart’s muscular tissue. Its primary role is to generate and propagate electrical signals that precisely coordinate the rhythmic contraction and relaxation of the heart chambers. This system ensures that the heart functions as … Read more
Blood vessels are a vital circulatory system component responsible for transporting blood throughout the body. They form a vast network of structures, from large arteries and veins to the smallest capillaries. Here is a comprehensive note on blood vessels, their types, functions, and significance in the circulatory system: See this post: Anatomy of the heart … Read more
Circulation of Blood in the Heart: Blood circulation in the heart involves a complex and highly regulated process that allows blood to move efficiently, delivering oxygen and nutrients to body tissues while removing waste products. The heart plays a central role in this process, pumping blood to the lungs for oxygenation and the rest of … Read more
Anatomy of the Heart: The human heart is the organ that pumps blood throughout the body via the vessels of the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes. Pumping blood through the arteries, capillaries, and veins is the major function of the heart. It maintains a … Read more
Cardiovascular system The heart (Cardiovascular system) is a vital organ in the human body and is often described as a muscular pump responsible for circulating blood throughout the entire circulatory system. It plays a central role in maintaining life by ensuring the delivery of oxygen and nutrients to various tissues and organs while removing waste … Read more
