its the embryonic origin of biological enzymes.
Organ
organelle
It's probably the brain. All bits are complex but the human brain's complexity is what makes us stand out from other creatures.
nervous system
There is no body system is more important than another. All of the systems work together to provide health to individuals.
The most important part of the body is the central nervous system (brain and spinal cord) because it controls and coordinates all other metabolic processes throughout the body.
its the embryonic origin of biological enzymes.
Except for the brain, humans have a body that is as complex as any other mammal's.
It's probably the brain. All bits are complex but the human brain's complexity is what makes us stand out from other creatures.
The nervous system comprises the body's total response mechanism. It receives external information, sends that info to the brain for processing, and sends messages from the brain about appropriate response to the effector muscles and glands.
Humans have one of the most complex circulatory systems of all beings. It is interesting because the heart pumps blood through all the veins and arteries in your circulatory system to your entire body. If you didn't have blood circulating in your body you would die.
All planets with atmospheres have complex weather systems. Perhaps Jupiter's is the most exciting.
nervous system. it is a very complex thing. look it up some time
While all the outer planet have a ring system, Saturn's is the largest, most complex and visible ring system in our solar system.
Not all animals have complex nervous systems. In fact, most lower animals don't even show an organized nervous system. Its only in higher animals like chordates that a proper organized nervous system is seen.
The circulatory system brings the needed substances to the body tissues.
They breathe in through their nose even the mouth. All animals require both respiratory and circulatory systems to survive. Some animals have rather rudimentary systems, while others, such as mammals, have complex systems capable of delivering oxygen and other nutrients to all parts of the body. The main purpose of the respiratory system is to take in oxygen from the environment and release carbon dioxide from the body. The circulatory system pumps this oxygen, as well as other nutrients, throughout the body in the blood.
The skeletal system includes all of the bones and joints in the body. Each bone is a complex living organ that is made up of many cells, protein fibers, and minerals.