True about Levator Ani except –
Converge downwards & medially
Made up of iliococcygeus & pubococcygeus
Attached to pelvic brim
Ans. D. Attached to pelvic brim
The levator ani is made up of three parts:
- Iliococcygeus muscle
- Pubococcygeus muscle
- Puborectalis muscle
Origin & Insertion:
- The levator ani arises, in front, from the posterior surface of the superior pubic ramus lateral to the symphysis behind, from the inner surface of the spine of the ischium and between these two points, from the obturator fascia.
- The fibers pass downward and backward to the middle line of the floor of the pelvis
- The most posterior are inserted into the side of the last two segments of the coccyx; those placed more anteriorly unite with the muscle of the opposite side, in a median fibrous ridge called the anococcygeal body or raphe, which extends between the coccyx and the margin of the anus.
Action: Supports the viscera in pelvic cavity