The excretory system
The eyes belong to the Nervous system.
The excretory system is actually not a system onto itself, but is a shared function by several other systems, such as the urinary system, the integumentary system, the respiratory system, and the gastrointestinal system. It also does not have a cortex.
The immune system
the bob system
The Circulatory System
Animals with kidneys.
Nephrons.
The filtering unit of the kidney is the nephrons.
They belong to the nervous system
The kidneys belong to the excretory system.
Veins belong to the circulatory system, because they transport blood there for they belong to the circulatory system.
The eyes belong to the Nervous system.
I'm not exactly sure but i know they are part of the urinary system and involve removing wastes
Arteries and veins belong to the cardiovascular system.
The lungs belong to the Respiratory System.
There are about 1 million nephrons in a kidney. Most humans have 2 kidneys.
No, the cortex does not contain nephrons. Nephrons are the functional units of the kidneys and are predominantly located in the renal cortex and renal medulla.