Examlex
Match each term with the appropriate definition.
-food additives
Muscular Middle Layer
The middle layer of an organ or body part that consists of muscle tissue, such as the myocardium in the heart.
SA Node
Sinoatrial node; the heart's natural pacemaker, located in the right atrium, it initiates the electrical impulses that dictate the heart rate.
Cardiovascular System
The body's system comprising the heart and blood vessels, responsible for circulating blood and oxygen throughout the body.
Electrical Shock
A sudden discharge of electricity through a part of the body, causing injury or potentially fatal effects depending on the voltage and duration of contact.
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