Pelvic Muscle Diagram. Diagram of the pelvic floor muscles enlarge general technique imagine that you are in a crowded room and feel as if you must pass gas or wind most of us will squeeze the muscles of our rectum and anus back passage to prevent passing gas. Muscles of the abdomen lower back and pelvis.
This mri male pelvis axial cross sectional anatomy tool is absolutely free to use. Levator ani muscles innervated by the anterior ramus of s4 and branches of the pudendal nerve roots s2 s3 and s4. Levator ani muscle coccygeus muscle levator ani.
The root contains three erectile tissues two crura and bulb of the penis and two muscles ischiocavernosus and bulbospongiosus.
Heres the coccygeus muscle. At the back is the sacrum tailbone and the front is the pubic bones. On each side the pelvic diaphragm is formed by two most unequal muscles the small coccygeus muscle behind and the much larger and more important levator ani muscle in front. The muscles of the pelvic floor are kept firm and slightly tense to stop leakage of urine from the bladder and wind.