The skin is the largest organ in the human body, covering an area of approximately 2 square meters (22 square feet).

The respiratory system is responsible for exchanging oxygen and carbon dioxide between the body and the environment.

The circulatory system is responsible for transporting oxygen and nutrients to cells and removing waste products.

The femur, also known as the thigh bone, is the longest and strongest bone in the human body.

The nervous system is responsible for controlling movement, thought, and other bodily functions.

The gluteus maximus, also known as the butt muscle, is the largest muscle in the human body.

The endocrine system is responsible for producing and releasing hormones, which regulate various bodily functions.

The small intestine is the longest and largest organ in the human digestive system.

The lymphatic system is responsible for fighting infection and maintaining fluid balance in the body.

The liver is the largest gland in the human body.

The reproductive system is responsible for producing offspring.

The average number of bones in an adult human body is 206.

The urinary system is responsible for filtering waste products from the blood and producing urine.

The aorta is the largest artery in the human body.

The immune system is responsible for protecting the body from infection.