Definition of impression for Students. 1  1 : something (as a design) made by pressing or stamping a surface The tires made impressions in the mud. 2  2 : the effect that something or someone has on a person's thoughts or feelings She shared her impressions of the city. 3  3 : an idea or belief that is usually uncertain.
A phlebotomist is someone who has been trained specifically in how to successfully draw blood, whether that be for a medical test or a blood donation. They work in such locations as doctors offices, medical labs, and hospitals. Most individuals who wish to pursue a career in phlebotomy will complete a training program before entering the workforce.
Circulatory System Procedures. Cardiologist â a physician specializing in the diagnosis and treatment of diseases of the circulatory system, especially, the heart. However, after diagnosis, he/she may refer to a cardiovascular surgeon. A cardiologist does not do surgery. Hematologist â a physician specializing in diseases of the blood.