Artificial kidneys: Hemodialysis therapy
If the kidneys fail, toxic substances build up in the body until cells and organs begin to deteriorate and eventually die. Many tens of thousands […]
Cardiovascular system
The Arterial system in human beings
The blood vessels which carry oxygenated blood away from the heart and supply blood to various body parts collectively constitute the arterial system. The major […]
Electrocardiogram, the recording of electrical activities of the heart
A permanent recording of the electrical events during a cardiac cycle made on a graph paper in the form of waves is called electrocardiogram (ECG). […]
Cardio-vascular diseases (Types, Causes and Prevention)
Many diseases affect the blood vessels and the heart. These include hypertensive heart diseases, coronary heart diseases, rheumatic heart diseases, heart block and stroke. A […]
Differences between arteries and veins
S.N. Arteries Veins 1. Arteries carry blood away from the heart and distribute to different body parts. Veins bring blood from different body parts […]
Differences between blood and lymph
S.N. Blood Lymph 1. It is a fluid connective tissue which is red in color. It is a colorless fluid connective tissue. 2. It is […]
The human heart (External and internal structure)
The human heart In all vertebrates including human beings, there is a single heart which acts as a pumping organ of blood vascular system. It […]
Blood cells (Types and functions)
Blood cells The blood cells constitute about 45% of the total blood volume. There are three major types of blood cells; Erythrocytes, Leukocytes and Thrombocytes. […]
Blood vessels (Types, structure and functions)
Blood vessels Our circulatory system is of closed type. i.e. blood flows within blood vessels which are network of closed tube like structures with walls. […]
Blood and plasma (Appearance, composition and functions)
Blood An average adult person has about 4-6 liters of blood, which forms about 8% of the body weight. The study of blood is called […]