it is an organ, it doesn't belong to any other organs in the body but it does belong to a system in the body the digestive system.
The bicep is in the muscular body system.
Respiratory System
The cardiovascular system.
The immune system
skeletal system :)
Circulatory system
The male reproductive system.
Sweat glands belong to the integumentary system, which is the body's system responsible for protecting the body from damage, such as dehydration and infection. Sweat glands help regulate body temperature by producing sweat, which cools the body through evaporation.
the arm
respriatory
respiratory