=The brain, (Central Nervous System), is the most important.==Second in line are the lungs, (Respiratory System), the brain needs oxygen to survive.==Third, the Heart, (Circulatory System), to transport the Oxygen.==Forth, the skin, (Integumentary System).=
the heart is part of the circulatory system in the body.
The brain is the organ that directs and controls the centeral nervous system.
The main organ of the sensory system is the brain. It processes and interprets information received from sensory organs such as eyes, ears, nose, tongue, and skin.
The main organ of the circulatory system is the heart. It pumps blood throughout the body, delivering oxygen and nutrients to cells and removing waste products.
I don't know that they're the main organs, but kidneys are certainly essential to the urinary system.
the main organ of the muscular system is the muscles
the heart is part of the circulatory system in the body.
The Heart is the main organ of a circulatory system.
The main organ in the muscular system is the muscles.
Yes the kidney is the main organ in the urinary system as well as the bladder.
The main organ of the blood transport system in a mammal is the heart.
The main organ in the respiratory system the lungs.
the heart is the main circulatory organ of the frog
The lungs are the main organ of the respiratory system, but they are also an organ in the circulatory system.
the respiratory system
The main organ in the muscular system is the muscles.
The main organ in the excretory system is the kidney. The kidney is the main organ that controls the excretory systems for vertebrates. It is also part of the Urinary system which is part of the excretory system.