The Kidneys
Liver is the most important part of excretory organ as it secrete some enzymes helps the system to breakdown the macromolecules into smaller components easily absorb-able to blood Answered by PASHA
The kidney is considered the most complex excretory organ in animals. It plays a vital role in filtering waste products from the blood to form urine, regulating the body's fluid balance, and maintaining electrolyte levels.
The muscle cell is most likely part of the muscular system. It is responsible for movement, posture, and production of heat.
The group of organ systems organized from most complex to least complex typically starts with the nervous system, then the circulatory system, followed by the respiratory, digestive, excretory, endocrine, and finally the integumentary system.
The brain is the most important organ of the nervous system. The spinal cord and the brain are the main parts of the nervous system but the spinal cord is not considered to be an organ.
The lungs.
lungs
skin!
the skull because it protects the brain
The kidneys are part of the excretory system.
Like most animals, the pig has an excretory system. The primary function of this system is to remove waste from the pig.
organ system