The integumentary system is composed of skin and other appendices such as nails and hairs. In the integumentary system there are several connections with the endocrine system. For example, the endocrine system may stimulate sebaceous glands and the releasing of sex glands that may cause changes in the distribution of subcutaneous fat.
As related to the sense organs we can think of the touch sense that is active through a great amount of nerve endings that react to heat, cold, vibration, texture, pressure and, therefore, send information to the endocrine system making it release hormones related pleasure, pain, discomfort, etc.