Instructions: Identify the Following

question 53

Short Answer

Instructions: Identify the following. Be as specific as possible, and include names, dates, and relevant facts as appropriate. Be sure to explain the significance of the person or term.
Grantism

---

Definitions:

S-T Segment

A portion of the electrocardiogram (ECG) reading that represents the period between the ventricular depolarization and repolarization, significant in diagnosing myocardial damage.

T Wave

A component of the ECG that represents the repolarization, or recovery, of the ventricles during heartbeats.

Atrioventricular Valves

Valves located between the atria and ventricles of the heart that prevent the backflow of blood during contraction.

Semilunar Valves

Heart valves located at the exits of the right and left ventricles, preventing backflow of blood into the ventricles after contraction; they include the aortic and pulmonary valves.