i. Embolus : It is a clot that forms in one part of body, flows with the blood stream and lodges on a blood vessel at a point some distance from the site of its formation.

ii. Thrombus : It is a blood clot, which stays where it is formed e.g. coronary thrombus.

iii. Thrombophilia : is a condition where the blood has an increased tendency to form clots. 

iv. Vasodilation : refers to the widening of blood vessels. 

v. Thrombocytopenia : deficiency of platelets in the blood. This causes bleeding into the tissues, bruising, and slow blood clotting after injury.

vi. Acapnia : It is the deficiency of C0₂ in the blood.

vii. Pulse pressure : The difference between systolic and diastolic pressure is termed as pulse pressure.