It is found it the blood vessels so it should be the circulatory system.
Tendons belong to the musculoskeletal system in the human body.
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.
The immune system
The cardiovascular system.
Respiratory System
Platelets are a component of the circulatory system. They play a crucial role in blood clotting and wound healing by forming clots to stop bleeding when a blood vessel is injured.
The male reproductive system.
Circulatory system
skeletal 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.
respriatory