In human anatomy, the Heart is primarily classified under which physiological system, and what is its core function?

In human anatomy, the Small Intestine is primarily classified under which physiological system, and what is its core function?

In human anatomy, the Ovaries is primarily classified under which physiological system, and what is its core function?

In human anatomy, the Pancreas is primarily classified under which physiological system, and what is its core function?

In human anatomy, the Adrenal Gland is primarily classified under which physiological system, and what is its core function?

In human anatomy, the Lungs is primarily classified under which physiological system, and what is its core function?

In human anatomy, the Kidneys is primarily classified under which physiological system, and what is its core function?