Yes--the heart. The blood pumped from the heart provides the brain with vital oxygen.
The Heart (sino-atrial node), the nervous system including the brain.
lymphatic
The human body primarily uses glucose, a type of simple sugar, for energy. We convert the energy stored in glucose into a molecule called ATP which is what powers most of our cellular activity.
One part of the water cycle is the producer of rain, which is essentially part of the weather forecast many people rely on.
The Body may use either, in any combinations, at different times for energy. Proteins may also be used for energy.
The Heart (sino-atrial node), the nervous system including the brain.
lymphatic
Human biology isn't simple. We depend on a lot of body parts working together to make the whole body function normally. Given all that, I would say that the brain was the most important part because it controls the rest of the body, eg the heart beat, the rate of breathing, digestion, fighting off infections, the hormones, blood sugar etc. All these things - and many more - rely on instructions from the brain in order to function.
Human Biology isn't simple. We depend on a lot of body parts working together to make the whole body function normally. Given all that, I would say that the brain was the most important part because it controls the rest of the body, eg the heart beat, the rate of breathing, digestion, fighting off infections, the hormones, blood sugar etc. All these things - and many more - rely on instructions from the brain in order to function.
glucose
They rely on glucose for energy.
The organ system that helps your body to sense things is known as the sensory system. This will rely on the circulatory fluids to send messages from the sense organs to the brain.
The red blood cells in the body completely rely on glucose, which is a carbohydrate, for energy. Adipose tissue and muscles cells partially rely on glucose as well.
The word relied is a verb. It is the past tense of rely.
Rely
Depend
No body parts actually make protein, but the body is full of protein. The hair, nails, muscles, and cells are just a few parts of the body that rely on protein to function and grow properly.