Anterior Abdominal Wall Anatomy Quiz
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Questions and Answers

Which muscle is responsible for trunk lateral flexion and trunk rotation during unilateral contraction?

  • Internal abdominal oblique muscle (correct)
  • Transversus abdominis muscle
  • Rectus abdominis muscle
  • External abdominal oblique muscle

    • From which ribs does the transversus abdominis muscle originate?

  • Ribs 10-12
  • Ribs 5-12
  • Ribs 7-12 (correct)
  • Ribs 8-12

    • Which nerve innervates the external abdominal oblique muscle?

  • Lower intercostal nerves (T7-T11) (correct)
  • Ilioinguinal nerve (L1)
  • Subcostal nerve (T12)
  • Iliohypogastric nerve (L1)

    • Which muscle is responsible for respiration during bilateral contraction?

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

    Where does the rectus abdominis muscle insert?

    <p>Xiphoid process, Costal cartilages of ribs</p> Signup and view all the answers

    Which nerve innervates the pyramidalis muscle?

    <p>Subcostal nerve (T12)</p> Signup and view all the answers

    Which of the following muscles originates from the thoracolumbar fascia?

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

    Which muscle tenses the linea alba?

    <p>Pyramidalis muscle</p> Signup and view all the answers

    Which of the following muscles inserts into the pubic crest and the pectineal line of pubis?

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

    What are the subdivisions of the abdomen?

    <p>Nine abdominopelvic regions defined by specific anatomical planes</p> Signup and view all the answers

    What is the composition of the superficial fascia superior to the umbilicus?

    <p>A single membranous layer continuous with the rest of the body</p> Signup and view all the answers

    What is the composition of the superficial fascia inferior to the umbilicus?

    <p>Two layers: Camper's and Scarpa's fascia</p> Signup and view all the answers

    What are stretch marks or striae distensae?

    <p>Elongated lines in the skin found in pregnant women, obese people, and those with abdominal distention</p> Signup and view all the answers

    What is the superior subcostal plane?

    <p>A plane passing right under the costal margins of the 10th ribs</p> Signup and view all the answers

    What is the inferior intertubercular plane?

    <p>A plane connecting the tubercules of the iliac crests</p> Signup and view all the answers

    What are the midclavicular planes?

    <p>Planes passing through the midpoint of each clavicle and halfway between the pubic symphysis and the anterior superior iliac spine</p> Signup and view all the answers

    What is the function of the superficial fascia?

    <p>To store fat and provide insulation</p> Signup and view all the answers

    What is the purpose of dividing the abdomen into regions?

    <p>To facilitate surgical access to specific organs</p> Signup and view all the answers

    What is the most common incision location for a Caesarean section?

    <p>Superior to the pubis and bladder</p> Signup and view all the answers

    Which structure forms the mesentery that suspends the abdominal viscera?

    <p>Parietal peritoneum</p> Signup and view all the answers

    What lies deep to the transverse abdominis muscle?

    <p>Extraperitoneal fat</p> Signup and view all the answers

    Which structure lines the internal surface of the abdominal wall?

    <p>Parietal peritoneum</p> Signup and view all the answers

    What is abundant in the posterior abdominal wall, especially around the kidneys and pelvic floor?

    <p>Extraperitoneal fat</p> Signup and view all the answers

    Which structure is NOT cut through during a C-section?

    <p>Transversalis muscle</p> Signup and view all the answers

    Where is a transverse cut made during a C-section?

    <p>&quot;Superior to the pubis and bladder&quot;</p> Signup and view all the answers

    'Camper's fascia' is a layer encountered during which surgical procedure?

    <p>&quot;Cesarean section&quot;</p> Signup and view all the answers

    'Scarpa's fascia' sits between which two layers during a Cesarean section?

    <p>&quot;Skin and Camper's fascia&quot;</p> Signup and view all the answers

    'Pyramidalis muscle' is found deep to which muscle during a Cesarean section?

    <p>&quot;Rectus abdominis muscle&quot;</p> Signup and view all the answers

    What is the function of Scarpa's fascia?

    <p>It firmly attaches to the linea alba and pubic symphysis, and fuses with the fascia lata below the inguinal ligament.</p> Signup and view all the answers

    In men, what does Camper's fascia contribute to?

    <p>It continues over the penis and blends with Scarpa's fascia to form the superficial fascia of the penis.</p> Signup and view all the answers

    What is the continuation of Scarpa's fascia in women?

    <p>It continues into the labia majora and anterior perineum.</p> Signup and view all the answers

    Which muscles form the lateral flat muscle group situated on either side of the abdomen?

    <p>External oblique, internal oblique, and transversus abdominis.</p> Signup and view all the answers

    What are the anterior vertical muscles situated bilaterally to the linea alba?

    <p>Rectus abdominis and pyramidalis.</p> Signup and view all the answers

    Which muscle is the most superficial among the lateral flat muscle group?

    <p>External oblique</p> Signup and view all the answers

    What is the attachment site of the external oblique muscle?

    <p>It attaches to the outer surfaces of the lower ribs and iliac crest.</p> Signup and view all the answers

    What is the continuation of the external oblique muscle anteriorly?

    <p>It continues as the external oblique aponeurosis, which courses anteriorly to the rectus abdominis muscle and inserts into the linea alba.</p> Signup and view all the answers

    What is the inguinal ligament?

    <p>It is the inferior border of the external oblique aponeurosis, between the anterior superior iliac spine and the pubic tubercle.</p> Signup and view all the answers

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