Pelvis Anatomy Quiz
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Questions and Answers

What structure separates the pelvic cavity from the perineum?

  • Pelvic floor (correct)
  • Obturator membrane
  • Pubic symphysis
  • Pelvic inlet

    • Which of the following correctly describes the true pelvis?

  • It is the lower part of the abdominal cavity.
  • It contains the abdominal organs.
  • It is larger than the false pelvis.
  • It encloses the pelvic cavity. (correct)

    • Which part of the pelvic bone forms the hip joint with the femur?

  • Acetabulum (correct)
  • Obturator foramen
  • Ischial spine
  • Sacrum

    • What forms the margin of the pelvic inlet?

    <p>Linea terminalis</p> Signup and view all the answers

    What is located inferior to the pelvic floor?

    <p>Perineum</p> Signup and view all the answers

    Which bones are included in the pelvis?

    <p>Pelvic bones and sacrum</p> Signup and view all the answers

    Which notch is located posteriorly and is divided by the ischial spine?

    <p>Lesser sciatic notch</p> Signup and view all the answers

    The obturator foramen is mostly closed by which structure?

    <p>Obturator membrane</p> Signup and view all the answers

    What is the most superior component of the pelvic bone?

    <p>Ilium</p> Signup and view all the answers

    At what age do the components of the pelvic bone typically fuse into a single bone?

    <p>16 to 18 years</p> Signup and view all the answers

    What structure lies immediately superior to the sacral surface of the ilium?

    <p>Arcuate line</p> Signup and view all the answers

    Which part of the ilium is involved in forming the wall of the lesser pelvis?

    <p>Pelvic part</p> Signup and view all the answers

    What is the anterior termination of the iliac crest known as?

    <p>Anterior superior iliac spine</p> Signup and view all the answers

    What feature of the iliac crest projects laterally near the anterior end of the crest?

    <p>Tuberculum of the iliac crest</p> Signup and view all the answers

    What surface of the iliac wing is concave and forms the iliac fossa?

    <p>Internal surface</p> Signup and view all the answers

    Which feature serves as the point of attachment for the rectus femoris muscle?

    <p>Anterior inferior iliac spine</p> Signup and view all the answers

    Which structure is formed by the fusion of five sacral vertebrae?

    <p>Sacrum</p> Signup and view all the answers

    What is the name of the prominent feature of the ischium that provides attachment for lower limb muscles?

    <p>Ischial tuberosity</p> Signup and view all the answers

    Which ramus of the pubis projects laterally and inferiorly to connect with the ischium?

    <p>Inferior ramus</p> Signup and view all the answers

    What structure marks the anterior edge of the body of the first sacral vertebra and projects forward?

    <p>Promontory</p> Signup and view all the answers

    Which surface of the superior pubic ramus is marked by the obturator groove?

    <p>Inferior surface</p> Signup and view all the answers

    What is the term for the sharp superior margin of the triangular surface of the pubis?

    <p>Pecten pubis</p> Signup and view all the answers

    Which part of the pelvis articulates with the ilium?

    <p>Pubis</p> Signup and view all the answers

    Which area of the sacrum is a large roughened surface that supports ligament attachment?

    <p>Sacro-iliac joint area</p> Signup and view all the answers

    Study Notes

    Pelvis Anatomy

    • The pelvis is a region enclosed by pelvic bones and the lower spine.
    • It's divided into two parts: the false (greater) pelvis (part of the abdominal cavity) and the true (lesser) pelvis (containing the pelvic cavity).
    • The pelvic cavity continuous with the abdominal cavity above.
    • The pelvic inlet is completely surrounded by bone.
    • The pelvic floor separates the pelvic cavity from the perineum.
    • The perineum, situated below the pelvic floor, is bordered by the pelvic outlet.
    • It contains openings for the digestive and urinary systems, reproductive tract, and external genitalia.

    Pelvic Bones

    • The pelvis's bony structure includes two pelvic bones, the sacrum, and the coccyx.
    • The sacrum connects to the fifth lumbar vertebra (L5) at the lumbosacral joint.
    • Pelvic bones connect posteriorly to the sacrum (sacroiliac joints) and anteriorly to each other (pubic symphysis).
    • Each pelvic bone is somewhat irregular and has two sections.
    • The upper section, above the oblique line, forms the lateral wall of the false pelvis.
    • The lower section, below the oblique line, forms the lateral wall of the true pelvis.
    • The linea terminalis, the lower two-thirds of the oblique line, forms part of the pelvic inlet.
    • Each pelvic bone contains the acetabulum, a socket that forms the hip joint with the femur's head.
    • Below the acetabulum is the obturator foramen, mostly covered by a membrane.
    • The obturator canal, a small opening through the membrane, connects the lower limb and pelvic cavity.
    • The posterior margin of the pelvic bone comprises the greater sciatic notch, lesser sciatic notch, and ischial tuberosity.
    • The anterior margin includes the anterior superior iliac spine, anterior inferior iliac spine, and pubic tubercle.

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    Description

    Test your knowledge on the anatomy of the pelvis, including its structure and components. Learn about the differences between the false and true pelvis, as well as the key pelvic bones. This quiz will help reinforce your understanding of this crucial part of human anatomy.

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