Heart

The heart is a myogenic muscular organ found in all animals with a circulatory system (including all vertebrates), that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions. While under the affect of the Wraith enzyme a Human heart will continue to beat despite the body being drained of life. Sharon Wallace had a heart murmour and, as a result, the nanites in her body stopped her heart to repair it, essentially starving her brain of Oxygen.

Cassandra Fraiser was implanted with a Goa'uld bomb which attached itself near the heart. General Hammond died from a heart attack.

Dr. Nicholas Rush had a Blueberry alien tracking device implanted in him, next to his heart.

Behind the scenes

 * Actor Don S. Davis died from a heart attack.