Multiple-Choice Questions - Pelvis

Which structure divides the greater and lesser pelvis?

• Sacroiliac joint

• Perineal body

• Pelvic brim

• Coccyx

What type of joint is the pubic symphysis?

• Synovial

• Secondary cartilaginous

• Fibrous

• Primary cartilaginous

The sacrospinous and sacrotuberous ligaments function to:

• Support the uterus

• Prevent superior and posterior rotation of the sacrum

• Connect the iliac crest to the femur

• Form the obturator canal

The pelvic diaphragm is primarily composed of:

• Obturator internus and piriformis

• Levator ani and coccygeus

• External anal sphincter and urethral sphincter

• Iliopsoas and gluteus maximus

Which muscle is NOT part of the levator ani group?

• Puborectalis

• Iliococcygeus

• Coccygeus

• Pubococcygeus

What is the function of the puborectalis muscle?

• Elevates the anus

• Forms a sling around the rectum to maintain the perineal flexure

• Closes the vaginal canal

• Stabilizes the sacroiliac joint

Which part of the pelvic cavity supports pelvic viscera and resists intra-abdominal pressure?

• Sacrotuberous ligament

• Obturator internus

• Pelvic diaphragm

• Urogenital diaphragm

The perineum is bounded anteriorly by the:

• Ischial tuberosity

• Sacrum

• Pubic symphysis

• Coccyx

The perineal body is located at the:

• Center of the anal canal

• Midline where the urogenital and anal triangles meet

• Superior border of the pelvic diaphragm

• Inferior border of the pubic symphysis

Which nerve supplies most perineal muscles?

• Sciatic nerve

• Pudendal nerve

• Obturator nerve

• Femoral nerve