Final answer:
Aspiration of joint fluid is a procedure to remove fluid from a joint. Edema is the accumulation of excess water in tissues. Compression reduces swelling and occlusion obstructs blood vessels.
Step-by-step explanation:
Aspiration of joint fluid is a procedure where a doctor uses a needle and syringe to remove fluid from a joint for analysis or therapeutic purposes.
Edema refers to the accumulation of excess water in the tissues, usually caused by an underlying medical condition, certain drugs, pregnancy, injury, or allergic reaction.
Compression refers to applying pressure on a part of the body to reduce swelling or pain, whereas occlusion refers to the obstruction of a blood vessel by a clot, air bubble, fatty mass, or foreign matter, which interrupts the blood flow.