Which is the bean-shaped reddish organ in the human excretory system?

The kidneys are the reddish bean-shaped organs in the human excretory system. 

They filter waste products from the blood, regulate fluid and electrolyte balance, and produce hormones that regulate blood pressure, red blood cell production, and bone formation. 

The urine produced by the kidneys is excreted from the body via two ureters that connect the kidneys to the bladder. Urine is expelled from the body via the urethra from the bladder.

The heart is a muscular organ located in the chest that pumps blood throughout the body. The heart is responsible for maintaining the circulation of blood and delivering oxygen and nutrients to tissues and organs.

The brain is the central organ of the nervous system, enclosed within the skull. It is responsible for controlling and coordinating all bodily functions and is the site of consciousness, thought, and memory.

Pancreas is an organ located in the abdomen that plays a crucial role in digestion and metabolism.