The part of the eye that uses muscle tissue for opening and closing movements is the Iris.
The correct answer is "Iris." The iris is the part of the eye that uses muscle tissue for opening and closing movements. To find the answer, you can start by understanding the different types of tissues in the human body and then narrowing it down to the eye. The four types of tissues in the human body are epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Out of these, muscle tissue is responsible for movement and is found in various parts of the body, including the eye. By considering the specific functions of different parts of the eye, you can deduce that the iris is the part that uses muscle tissue to control the size of the pupil, thereby regulating the amount of light that enters the eye.
