15 Questions
Which of the following is a muscle of the pelvic wall?
Piriformis
Which muscle listed below is part of the pelvic floor?
Levator ani
Which of the following muscles is NOT part of the pelvic wall or floor?
Triceps brachii
What is the name of the muscle that helps form the posterior part of the pelvic wall?
Piriformis
Which of these muscles is correctly paired with its location in the pelvic region?
Levator ani - pelvic floor
Which muscle is part of the Levator ani?
Iliococcygeus
The pelvic diaphragm includes which of the following muscles?
Pubococcygeus
Which muscle is NOT part of the pelvic diaphragm?
Piriformis
Which of the following muscles is synonymous with Coccygeus?
Ischiococcygeus
Which muscle of the Levator ani lifts the anal canal during defecation?
Pubococcygeus
Which structure is a part of the pelvic brim?
Sacral promontory
Which of the following structures is located at the pubis?
Pectineal line
Which structure connects to the sacroiliac joint?
Alar of sacrum
Which structure is at the anterior aspect of the pelvic brim?
Pubic symphysis
Which of the following is found in the ilium?
Arcuate line
Study Notes
Pelvic Diaphragm
- The floor of the pelvis is composed of the pelvic diaphragm.
- The pelvic diaphragm consists of two main muscle groups:
- Levator ani, which includes:
- Iliococcygeus
- Pubococcygeus
- Puborectalis
- Coccygeus (also known as Ischiococcygeus)
- Levator ani, which includes:
Muscles of the Pelvic Wall and Floor
- The pelvic wall and floor contain additional muscles, including:
- Piriformis
- Coccygeus
- Levator ani
- Obturator internus
Structures of the Pelvic Brim
- The pelvic brim is characterized by several notable structures, including:
- Sacral promontory
- Alar of sacrum
- Sacroiliac joint
- Arcuate line
- Iliopubic eminence
- Pectineal line
- Pubic tubercle
- Pubic symphysis
Learn about the muscles that make up the pelvic diaphragm, including the levator ani and coccygeus. Test your knowledge of the floor of the pelvis!
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