Blooda) Red & White blood cells and

Plateletsb) Functions of bloodc) Blood Clottingd) Functions of blood plasmae) Tissue fluid and lymphf) Lymph nodesg) Atherosclerosis & Coronary

thrombosis

Blood

Red Blood Cells

White Blood Cells

These play a role in immunity

Phagocytosis by WBC

Monocyte

Lymphocyte

These are small cell fragments that assist in blood clotting.

Normal Platelets in Flowing blood

Platelets

Transports Oxygen

Transports Carbon Dioxide

Transport of other solutes eg. Food Substances, Urea, Hormones

Distribution of Heat

Defence against disease

Blood Clotting

Functions of Blood

Blood Clotting

Another look at a blood clot

Contains : Water Nutrients Proteins (albumin and globulin) Gases Hormones Waste

Plasma is a watery liquid Transports substance from where they are

made or enter the body to their destination.

Blood plasma

The lymphatic system is a system of thin tubes that runs throughout the body.

The lymphatic system carries a colourless liquid called 'lymph‘ ,that circulates around the body tissues.

It contains a high number of lymphocytes (WBC) and plasma that leaks out of the capillaries (Tissue fluid).

This then drains into the lymph vessels.

Tissue Fluid and Lymph

Lymph nodes

There are lymph nodes

Under your arms, in your armpits                 In each groin (at the top of your legs)                 In your neck

There are also lymph nodes that you cannot feel

Your abdomen                           Your pelvis           Your chest 

Other organs that are part of the lymphatic system

The lymphatic system includes other body organs.  These are the

Spleen         Thymus         Tonsils         Adenoids

Location of some lymph organs

Atherosclerosis is the name given to the build up of cholesterol and fat (fatty deposits or plaques) in the artery walls.

The arteries become narrow and hardened, their elasticity disappears and it becomes difficult for blood to flow through.

The fatty plaques can also rupture, causing blood to clot around the rupture.

If blood can't then flow past the clot to the necessary part of the body, the tissue dies.

Plaque ruptures are a common cause of heart attacks. Most people in the developed world have atherosclerosis

in some parts of their body, without ever noticing it. Atherosclerosis develops gradually over time and can start

around the age of 20.

Atherosclerosis

The heart is surrounded by three major coronary arteries that supply it with blood and oxygen.

If a blood clot develops in one of these arteries, the blood supply to that area of the heart muscle will stop. This is known as a heart attack, or in medical terms a coronary thrombosis or myocardial infarction.

A heart attack will cause severe chest pains behind the breast bone, often radiating towards the left arm.

If the blockage (thrombosis) is not dissolved quickly with medication, the area of heart muscle that isn't getting enough oxygen will stop working properly.

The person may die

Coronary Thrombosis

Blood consists of different parts RBC, WBC and Platelets have different roles Lymph and Tissue fluid has an important

role Atherosclerosis is the damaging of arteries

which and lead to coronary thrombosis or heart attack

Summary