its the embryonic origin of biological enzymes.
Except for the brain, humans have a body that is as complex as any other mammal's.
The nervous system is considered the most complex system in the body. It coordinates all the body's activities, processes sensory information, and allows for communication between different parts of the body through a network of specialized cells called neurons. The brain, spinal cord, and peripheral nerves make up the nervous system.
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.
Neurons are considered the most complex cells in the body due to their specialized structure and function in transmitting electrical and chemical signals in the nervous system. They have unique features such as dendrites, axons, and synapses that enable them to perform intricate communication tasks.
The structures of the human body in order from least to most complex are cell, tissue, organ, and organ system.
The circulatory system brings the needed substances to the body tissues.
The nervous system is a complex network of nerves and cells that transmit signals between different parts of the body. It controls and coordinates all bodily functions, from basic activities like breathing and heartbeat to more complex actions like thinking and feeling.
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 brain works with all body systems as the body's control center. It is most closely related to the nervous system.
The buffer system