Plasma is the yellowish fluid in the blood It is in the plasma that nutrients are transported Contains proteins that help in blood clotting Also keeps the body at its optimum pH level
There are 3 different types of blood cells Do you know what they are called?called?
The three types of blood cells are: Red Blood cells (erythrocytes)(erythrocytes) White blood cells (leukocytes)(leukocytes) Platelets (partial blood cells)(partial blood cells) Do you know what each of these cells do?
Red blood cells are used to transport oxygen around the body. What is the structure called to transport oxygen on red blood cells? Return to cells slide Return to cells slide
Haemoglobin is the carrier molecule on RBC to carry oxygen When oxygen is attached it is called oxy- haemoglobin. Return to RBC slide Return to RBC slide Return to Blood cell slide Return to Blood cell slide
With haemoglobin the red blood cells can carry 20mL of oxygen per 100mL of blood. This is about 70 times what they could carry without haemoglobin!
White blood cells are very useful as they assist the body in fighting infection. This is what is attacked in the infection HIV. Return to cell slide Return to cell slide
Platelets are partially broken down red blood cells that are used to clot blood. Ie they form scabs and stop us from continually bleeding. Return to cell slide
Transport: Water, Oxygen and Carbon dioxide Distribution of nutrients Waste removal Maintaining body temperature
Made of specialised muscle which allows blood to be pumped all around the body Where do you think that blood needs to go? Blood travels in structures called veins, arteries and capillaries, these are called blood vessels.
Arteries: carry oxygenated blood and move away from the heart Veins: move to the heart and carry deoxygenated blood. Capillaries: Site of blood “cross-over”. Nutrients exchanged.
Average humans have 5L of blood. Does anyone know how much blood the heart pumps? Do you know how much of this 5L is in plasma and how much is blood cells?
The heart pumps 5L of blood per minute 55% of blood is plasma 45% of blood is blood cells
Using the computers, find out what the structure of veins and arteries. Draw the structure in a clear and labeled diagram. When you have completed this, research a heart/vein related disease. Eg. Atherosclerosis, Deep Vein Thrombosis, Cardio arrhythmias, Thalassemia.