These Muscles Extend from the Pubis and Ischium Anteriorly to the Sacrum

These muscles extend from the pubis and ischium anteriorly to the sacrum and coccyx posteriorly.They control the evacuation of waste materials from the digestive and urinary systems.

A) Muscles of the abdominal wall
B) Muscles of the vertebral column
C) Muscles of the pelvic floor
D) Muscles of the pharynx
E) Muscles of the perineal floor