Speaking of human consciousness, a small qualifier. Human consciousness is unconscious of most that goes on inside the body. The Krebs cycles run without human awareness. Billions, maybe trillions of Krebs cycles cycle per second powering the cells and the body, and continuing whether we know of Krebs cycles or not. Human consciousness is usually unconscious of breathing or of blood filtering through the liver, the kidneys, and the lungs even while being aware that this happens. Human consciousness is of special interest to us, while consciousness is abstract, a general concept, a simplified view of reality that describes no real object.
I think you must mean by direct perception, that consciousness we share with all the higher animals. Obviously, we are conscious of all these things that go on in the body, else how would you know that there are such processes we are not directly conscious of? Interestingly, it is the kind of consciousness unique to human beings that does make it possible for us to be conscious of these things, not directly, but conceptually.
The animals are also not directly conscious of most of the things that go on in their bodies, but they will never know it.
Hank