What Causes Weak Immune System Issues?
Explore the various causes of a weak immune system and find science-backed solutions to strengthen your body’s defenses. Understanding Weak Immunity Imagine catching >> Read More ...
Heart and Vessels
Coronary Artery | Blood Supply to the Heart
The heart is a muscular pump located in the thoracic (chest) cavity. It is constantly working to circulate blood throughout the body. During times of physical exertion or emotional stress, the activity of the heart increases. Due to its constant action, the heart needs a good supply of oxygen and nutrient rich blood to >> Read More ...
Heart Valves (Mitral, Tricuspid, Aortic, Pulmonary) Function
The heart has four chambers – two atria (right and left) and two ventricles (right and left). Blood from the rest of the body or the lungs enters the right and left atrium respectively. The atria then pushes the blood into the ventricles. The more muscular ventricle wall contracts sending the blood into the pulmonary >> Read More ...
Sudden Cardiac Death (SCD) Meaning, Process and Causes
The hearts has its own electrical system to control the rate and rhythm of the heart beat. Impulses are generated in the sinoatrial node (SA node) and immediately cause the muscles of the atria to contract. This pushes blood into the ventricles. The impulse travels along the internodal pathways to the atrioventricular node >> Read More ...
Heart Damage With A Heart Attack (Permanent and Irreversible)
A heart attack, or myocardial infarction (MI), is the death of a portion of the heart wall when there is an interruption in its blood supply. The heart wall is composed of three layers – the inner lining (endocardium), middle muscle layer (myocardium) and outer lining (epicardium) – and has its own supply of >> Read More ...
Hypotension – Abnormally Low Blood Pressure Problems
Blood pressure is the force that blood exerts against the walls of the vessels it travels through it. Arterial pressure, that is the pressure within arteries which are the blood vessels that carry oxygen and nutrient-rich blood through the body, and it is higher than venous pressure (pressure in the veins). There are >> Read More ...
Heart Murmurs (Abnormal Heart Sounds) Types, Causes, Symptoms
The heart is a muscular pump that fills with blood when the muscle relaxes (diastole) and forces blood out during contraction (systole). The heart sounds are normally a ‘lub dub’ sound when heard with the aid of a stethoscope. It is a result of the closing or snapping back of the heart valves and the flow of >> Read More ...
Left-to-Right Cardiac Shunts (Heart) Types and Symptoms
Congenital heart defects arise in the fetal stage in life when the development of the heart and/or great blood vessels is disrupted in some manner. This leads to a structural abnormality in the heart or vessels which depending on the type and extent may case mild to severe symptoms or can even be life threatening. The >> Read More ...
Congenital Heart Disease and Defects Causes and Symptoms
The terms congenital and acquired are frequently used in medicine to describe a disorder, disease or defect that is either present from birth (congenital) or develops during the course of life (acquired). Congenital defects stem from fetal development but is often only obvious after birth once the baby’s body has to >> Read More ...
Irregular Heart Beat Rhythm and Rate (Arrhythmia)
The heart is a muscular pump with its own electrical system to keep it functioning independently. Electrical impulses are generated in the sinoatrial node (SA node) in the atrial wall, passes directly to the muscles of the atria, is delayed in the atrioventricular node (AV node) and then transmitted to the muscles of the >> Read More ...
Electrical Conduction System and Activity of the Human Heart
The heart has a complex electrical system which regulates the contraction and relaxation of its muscular wall. This enables the heart to function by receiving blood during relaxation and pumping it out with force to the lungs and other parts of the body. The rhythm of the heart beat is controlled by a natural pacemaker >> Read More ...