I agree with AwakeTooLong ^-^.
Talking spiritually, we basically have 'souls'. The soul and spirit are essentially synonymous. They teach that a person essentially consists of a physical body that must die, and a soul that lives forever.The physical body, a solid form of body which obtains our soul, eventually dies and cannot be immortant if that's what you're talking about, obviously, but we have a soul which continues to exist in some form after the death of the physical body.
To say it shortly, there is a source of energy that exists within an organism (person) giving it/them life the absence of this energy causes death. This life giving energy is referred to as a soul or spirit.
It is suggested that a body can continue to exist with the use of technology but in the absence of a soul it cannot be alive. A soul is believed to exist as a shroud of pure conscious energy that is beyond physical containment or measurement. It is perceived to exist within a sphere that is beyond the purview of scientific knowledge.While a person is alive they use their brain to sense the physical world around them. When they die the functions of the brain are taken over by their immortal consciousness; the soul. The soul can leave the body while the brain shuts down from lack of oxygen. Your soul will always keep existing.
Talking genetically, your family in your future will carry on your genes, which is called 'bllod lines' or 'genetical connection'. People see it as they 'carried you with them', but this is already another thing.
Talking in a scientefic and a physical way, which is what you want to achieve, your body will always die, eventually. We have something in our bodies ( all of us as human beings ) which is called 'carbon'. The carbon that we obtain in our bodies is the only lasting material within our bodies. It has been actually scientifically proven that carbon in our bodies starts to slowly squanders in amount (going through few proccesses, talking in a scientific way) over time. So eventually all you will be be is a bunch of bones unable to move or perform any task at all, or take any specific action.
Life is just a perception. Many people would call that thing that you use to percieve the world with your "soul", but you can call it anything you'd like.
Hope it helps,