1. Blood Clotting
By Jake, Ayman, and Eric

2. How does blood clotting work?
Platelets – a type of colorless cell fragment that lacks a nucleus, also known as thrombocytes
Plasma – liquid component of blood, holds the blood cells, makes up of 55% of blood volume in the body
Blood clotting occurs in the veins and arteries, and is also known as coagulation
The damaged tissue cells release clotting factors, and these clotting factors set off a chain of reactions
Fibrin strands are formed in order to form a semi-solid clot
The body usually naturally dissolves the clot once the injury is healed
In some situations, clots may form inside of vessels or are not dissolved naturally, which may require appropriate treatment

3. What is the purpose of blood clotting?
Blood clots form when blood comes into contact with skin or blood vessel walls
Stops bleedings
Prevents pathogens from entering the blood flow
Causes include:
Smoking
Pregnancy
Certain Medications
Genetics

4. What are the negative effects of blood clotting?
The development of a blood clot in a vein is called venous thromboembolism(VTE),  and it is a serious, potentially fatal, medical condition.
VTE is the collective term for deep vein thrombosis, which is a blood clot in in one of the deep veins in the body, usually in one of the legs, and also pulmonary embolism, a blood clot in the blood vessel that carries blood from the heart to the lungs.
Effects of deep vein thrombosis: cramping pain, redness, warmth, or swelling in one of your legs
Effects of pulmonary embolism: breathlessness,chest pain, fainting,or coughing up blood  
Blood clotting in the coronary arteries can be fatal, as it can cause heart attacks. This condition is called Coronary Thrombosis.

5. Coronary Thrombosis
Blood clots form in coronary arteries when deposits of plaque rapture.
This can completely block coronary arteries
Consequence: an are of the cardiac muscle receives no oxygen
Heart stops beating in a coordinated way
This is called a Heart Attack
Blood clots form in coronary arteries when deposits of plaque rapture. 
This can completely block coronary arteries 
Consequence: an are of the cardiac muscle receives no oxygen 
Heart stops beating in a coordinated way because the cardiac muscle cannot contract correctly anymore
This is called a Heart Attack 
The uncoordinated contraction is called fibrillation
Sometimes the heart recovers
Oftentimes, heart attacks are fatal