By: Emmanuel Abrams
Structures & Functions
Blood Vessels: Blood vessels are a series of elastic tubing that carry blood to and from the heart. The oxygenated blood leaves the heart and supplies oxygen and nutrients to the body via the arteries.
The Blood: Blood is a semi-viscous fluid that contains red blood cells, white blood cells, platelets and a watery substance called plasma that contains proteins, sugars, fats and minerals. They are responsible for transporting oxygen to the cells and carries carbon dioxide back to the heart.
Types of Blood Vessels
Capillaries: enables the actual exchange of water and chemicals between the blood and the tissues.
Veins: carries blood from the capillaries back toward the heart.
Distinguishing Among Human Blood Groups
Varicose Veins: gnarled, enlarged veins that are commonly affected are those in your legs and feet because standing and walking upright increases the pressure in the veins of your lower body.
Valve Prolapse: a common cause of a heart murmur cause by a leaky heart valve. This can happen when the main heart muscle, called the left ventricle, squeezes during each heartbeat.