Muscle origin
Ischial spines
Muscle insertion
Inferior end of the sacrum and coccyx.
Muscle function
Supports the pelvic viscera, control of Coccyx and Sacrum
Nerve innervation
S4-5
Primary muscle type
Tonic / Type I (70-80%)
Myofascial lines
None
Myofascial line
Primary inhibatory muscles
Related joints
Organ relationship (T5-L2, Sacrum, n. Vagus)
Synergists