Which of the Following Muscles is Involved in Producing Horizontal

Question

Which of the following muscles is involved in producing horizontal wrinkles in the forehead?
A) the medial pterygoid
B) the temporalis
C) the zygomaticus major
D) the frontal belly of epicranius

Accepted Answer

The frontal belly of epicranius muscle is responsible for raising the eyebrows and producing horizontal wrinkles in the forehead. The medial pterygoid muscle is located in the jaw and is responsible for closing the jaw. The temporalis muscle is responsible for closing the jaw and moving the jaw side to side. The zygomaticus major muscle is responsible for lifting the corners of the mouth in smiling.