Fatigue is a subjective symptom, impossible to see and difficult to quantify; it can be linked to a multitude of physical conditions.
Some individuals do not experience fatigue or only rarely, while others often report feeling tired.
PlateletsPlatelets, also known as thrombocytes, are small cell fragments produced by the bone marrow. They play a crucial role in blood clotting by forming aggregates and clots to stop bleeding when blood vessels are damaged. >> are small cell fragments in our bloodBlood is composed of red blood cells, white blood cells, platelets, and plasma. Red blood cells are responsible for transporting oxygen and carbon dioxide. White blood cells make up our immune defense system. Platelets contribute to blood. They are tiny particles of the largest cells found in the bone marrow. They play a role in bloodBlood is composed of red blood cells, white blood cells, platelets, and plasma. Red blood cells are responsible for transporting oxygen and carbon dioxide. White blood cells make up our immune defense system. Platelets contribute to blood coagulation, in other words, in stopping bleeding.
The pericardiumThe pericardium is a sac surrounding the heart and containing a lubricating fluid that allows it to glide with each beat without friction. is a sac surrounding the heart and containing a lubricating fluid that allows it to glide with each beat without friction.
Not all thoracic pains are necessarily related to the heart.
The majority of chest pains often have no identifiable source. We need to be sure that the heart is not the cause.
If you are worried about chest pain, tell your doctor.
Like the human body, the heart has its skeleton. The 4 chambers of the heart are attached to it.
The electrocardiogram (ECG or EKG) is the recording of the electricity generated by your heart.
The electricity of the heart can be recorded by the installation of small electrical sensors on the skin.
An ECG (or EKG) is specific to each person. It is like a fingerprint.
The heart has an electrical system that synchronizes its contraction efficiently.
The upper chambers, the atriaThe atria are the two upper chambers of the heart. They act as reservoirs for blood that will fill the ventricles., must first contract to fill the ventricles in the lower part of the heart. These, in turn, will compress and, in an inescapable upward movement, spill their contents into the large vessels at the top.
Tricuspid valves include the pulmonary and the aortic valvesThe aortic valve is located between the left ventricule and the aorta. It is one of the four valves ot the heart. >>. Each has 3 cusps that fit onto a fibrous ring in the cardiac skeleton. These valves separate the pulmonary artery from the right ventricle and the aorta from the left ventricle.
The 2 valves that separate the ventricles from the atria are called atrioventricular valves. The tricuspid valve is located on the right side and the mitral valve is on the left.
Heart rate can be calculated by measuring the pulseThe pulse is the sensation of beating that one feels by applying slight pressure on an artery, usually at the wrist or neck. It corresponds to the blood flow pulsated by the heart through the arteries with. The 2 most frequently used pressure points for taking the pulseThe pulse is the sensation of beating that one feels by applying slight pressure on an artery, usually at the wrist or neck. It corresponds to the blood flow pulsated by the heart through the arteries with are in the neck (carotid artery) and on the wrist (radial artery).
