nerve cells conduct messages in the body & messages in the body are electrical signals ->  nerve cells conduct messages in the body in the form of electrical signals  nerve cells conduct messages in the body in the form of electrical signals & something that conducts electricity can carry electricity ->  nerve cells carry messages in the body in the form of electrical signals  nerve cells carry messages in the body in the form of electrical signals & nerves are made of nerve cells ->  nerves carry messages in the body  sensory organs are a part of the body & the brain is a part of a body ->  sensory organs and the brain are parts of a body  nerves carry messages in the body & sensory organs and the brain are parts of a body ->  nerves carry messages from sensory organs to the brain  seeing is used for sensing visual things & sensory organs are used for sensing ->  some sensory organs are used for seeing  some sensory organs are used for seeing & eyes are a part of a human for seeing ->  eyes are a kind of sensory organ  nerves carry messages from sensory organs to the brain & eyes are a kind of sensory organ -> nerves carry messages from the eyes to the brain