The cerebrum is part of the brain, and so is part of the nervous system.
nervous system
The integumentary system includes the epidermis. The epidermis is part of the organ called the skin.
The digestive system includes the esophagus.
The digestive system.
An organ sytem includes tissues.
The integumentary system (which also includes hair and nails).Integumentary System
An organ sytem includes tissues.
The respiratory system.
Skeletal System
The integumentary system includes the hair, as well as the nails and skin.
The cerebrum is part of the the nervous system.
An organ system typically consists of multiple organs working together to perform specific functions. The number of organs in an organ system can vary, ranging from a few to many, depending on the complexity of the system. For example, the digestive system includes organs such as the stomach, liver, and intestines, while the respiratory system includes organs such as the lungs and trachea.