heart

First Appearance	TOS 03 (13 Oct 1966)
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The heart was the organ responsible for distributing blood through the body of most life forms. While the heart was located near the center of the chest on Humans, it was located near the bottom of the rib cage on the left side of a Vulcan's body.^[1]

The approximate location of a Human heart (TOS 03)

Wikipedia

Notes and References

↑ Roddenberry, Gene (Executive Producer). "The Corbomite Maneuver". Star Trek, season 1, episode 10 (Production number 03). Directed by Joseph Sargent. Written by Jerry Sohl. Desilu Productions. 10 November 1966.

[TOS03-1] Roddenberry, Gene (Executive Producer). "The Corbomite Maneuver". Star Trek, season 1, episode 10 (Production number 03). Directed by Joseph Sargent. Written by Jerry Sohl. Desilu Productions. 10 November 1966.

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