Abdomen Lecture: Bony Framework, Muscles, and Innervation
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Questions and Answers

What is the bony framework of the abdomen composed of?

  • Thoracic aperture and diaphragm
  • Pelvic bones and costal margin
  • 5 lumbar vertebrae & their intervertebral disc (IVD) (correct)
  • Quadratus lumborum and psoas major
  • Which muscles reinforce the posterior aspect of the abdominal wall?

  • Quadratus lumborum, Psoas major, Iliacus (correct)
  • Rectus abdominis, External oblique, Internal oblique
  • Pectoralis major, Deltoid, Triceps brachii
  • Transversus abdominis, Rectus abdominis, Serratus anterior
  • Which structure forms the superior opening to the abdomen?

  • Diaphragm
  • Pelvic inlet
  • Rib 12
  • Inferior thoracic aperture (correct)
  • Which of the following is NOT a component of the abdominal wall's bony elements?

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

    What is the main function of quadratus lumborum, psoas major, and iliacus muscles?

    <p>Major flexors of hip joint</p> Signup and view all the answers

    Which structure encloses a single large peritoneal cavity that freely communicates with the pelvic cavity?

    <p>Abdominal wall</p> Signup and view all the answers

    Which of the following muscles predominantly forms the lateral part of the abdominal wall?

    <p>Transversus abdominis</p> Signup and view all the answers

    What is the superficial fascia of the abdominal wall called?

    <p>Camper’s fascia</p> Signup and view all the answers

    In men, which specialized fascial layer contains smooth muscle fiber and is formed from the superficial fascia of the abdominal wall?

    <p>Dartos fascia</p> Signup and view all the answers

    What is the inferior extension of Scarpa's fascia called?

    <p>Fascia lata</p> Signup and view all the answers

    Which structures contribute to the superior part of the posterior abdominal wall?

    <p>Diaphragm and lumbar plexus</p> Signup and view all the answers

    What is the structure between the parietal peritoneum and the muscles in the posterior abdominal wall called?

    <p>Psoas sheath</p> Signup and view all the answers

    Where does the superficial perineal fascia (Colles’ fascia) continue into in women?

    <p>Labia majora and anterior part of perineum</p> Signup and view all the answers

    Which muscles predominantly form the lateral parts of the abdominal wall?

    <p>Transversus abdominis, internal oblique, and external oblique</p> Signup and view all the answers

    What does Camper’s fascia contain?

    <p>Fat and varies in thickness.</p> Signup and view all the answers

    Where does Scarpa’s fascia fuse with another structure just below the inguinal ligament?

    <p>Fascia lata.</p> Signup and view all the answers

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