Blood transfusion

A haematologist describes the process of giving blood and the reasons why people may need a blood transfusion. She also explains how the blood is tested to reduce the risk of infection.

Title: Blood: RBC,WBC,Platelets, hemopoiesis,circulation.

The Blood
Blood Cells

HemoglobinHemoglobin is a four subunit protein used for oxygen transport. In this video, the four distinct subunits can be easily distinguished thanks to the ribbon coloring scheme Chimera provides, and the iron hemes can be seen in solvent-exposed pockets in the surface hydrophobicity viewing mode.

Human and domesticated animal blood cells, and hemopoietic activity. For more details, visit www.compuhistology.com
Blood cells and hemopoiesis
Blood Circulation

Blood: Path of a Red Blood Cell
How the Body Works : The Functions of Blood

Cardiovascular System, Cardiology and ECG Courses.

Circulatory system


Cardiology is a subspecialty of internal medicine dealing with disorders of the heart and blood vessels. The field includes diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular heart disease and electrophysiology. Physicians specializing in this field of medicine are called cardiologists. Cardiologists should not be confused with cardiac surgeons who are surgeons who perform cardiac surgery - operative procedures on the heart and great vessels.
The Cardiac Muscle
1.1 Cardiac pacemaker (Electrical system of the heart)
1.2 Basic cardiac physiology
2 Disorders of the heart
3 Disorders of the coronary circulation
4 Sudden cardiac death (The abrupt cessation of blood flow, leading to death)
4.1 Treatment of sudden cardiac death
5 Disorders of the myocardium (muscle of the heart)
6 Disorders of the pericardium (outer lining of the heart)
7 Disorders of the heart valves
8 Disorders of the electrical system of the heart (Cardiac electrophysiology)
9 Inflammation and infection of the heart
10 Congenital heart disease
11 Diseases of blood vessels (Vascular diseases)
12 Procedures done for coronary artery disease
13 Devices used in cardiology
14 Diagnostic tests and procedures
15 Cardiac pharmaceutical agents

The Pacemaker of the Heart

The pacemaker of the heart, a tiny area of specialized nervous tissue in the right atrium, sets the heart beating about seventy times a minute. Without it the heart would beat only forty times per minute, which is too slow for the body's needs. The pacemaker, or sinuatrial node, regularly sends out nerve impulses which spread through the two atria, causing them to contract. From the atrioventricular node the contraction spreads down special conducting tissue, the bundle of His, causing the ventricles to contract and pump blood out of the heart.

ECG interptretation
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