A surgeon who specializes in reducing scarring or disfigurement that may occur as a result of accidents, birth defects, or treatment for diseases, such as melanoma. Many plastic surgeons also perform cosmetic surgery that is unrelated to medical conditions.
- Plastic surgery
A surgical specialty that is dedicated to reconstruction of facial and body defects due to birth disorders, trauma, burns, and disease. Plastic surgery is also involved with the enhancement of the appearance of a person through cosmetic surgery.
- Plasticity, brain
The phenomenon of change and learning in the adult brain. Also known as brain malleability.
An irregular, disc-shaped element in the blood that assists in blood clotting. During normal blood clotting, the platelets clump together (aggregate). Although platelets are often classed as blood cells, they are actually fragments of large bone marrow cells called megakaryocytes.
- Platelet aggregation
The clumping together of platelets in the blood. Platelet aggregation is part of the sequence of events leading to the formation of a thrombus (clot).
- Platelet count
The calculated number of platelets in a volume of blood, usually expressed as platelets per cubic millimeter (cmm) of whole blood. Platelets are the smallest cell-like structures in the blood and are important for blood clotting and plugging damaged blood vessels. Platelet counts are usually done by laboratory machines that also count other blood elements […]