Physiology is concerned with all those phenomena of life that present them selves to us in sense perception as bodily processes, and accordingly form part of that total environment which we name the external world.
Ultimately, life is a chemical interaction.
A living thing is distinguished from a dead thing by the multiplicity of the changes at any moment taking place in it.
The cell never acts; it reacts.
It is the cells which create and maintain in us, during the span of our lives, our will to live and survive, to search and experiment, and to struggle.
What am I, Life? A thing of watery salt Held in cohesion by unresting cells, Which work they know not why, which never halt, Myself unwitting where their Master dwells?
Your body isn't just a body. It's an ecosystem.
The living cell almost always contains, locked in its interior, the visible or invisible products of its physiological activity or its nourishment.
The individual organs follow the same pattern as the whole organism, i.e. they have their period of growth, of stationary, maximum activity and then of aging decline.
My organs are too powerful... I manufacture blood and fat too rapidly.
