Abdominal Wall Anatomy Quiz
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Abdominal Wall Anatomy Quiz

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@FelicitousCognition

Questions and Answers

Which structure separates the abdominal cavity from the pelvic cavity?

Pelvic inlet

Which of the following landmarks separates the anterior abdominal wall from the lower limb?

Inguinal Ligament

Which landmark separates the posterolateral abdominal wall from the gluteal region?

Iliac crest

Which of the following is used to describe the location of abdominal organs and the pain associated with abdominal problems?

<p>Topographical divisions</p> Signup and view all the answers

Which structure in the abdominal wall is formed by the fusion of the internal oblique and transversus abdominis muscles?

<p>Conjoint tendon</p> Signup and view all the answers

Which of the following is not part of the nerve supply of the abdominal wall?

<p>Inguinal ligament</p> Signup and view all the answers

Which of the following is one of the two schemes most often used to describe the abdominal quadrants and regions?

<p>Nine-region pattern</p> Signup and view all the answers

Which plane passes through the umbilicus and the intervertebral disc between LIII and LIV?

<p>Horizontal transumbilical plane</p> Signup and view all the answers

Which plane passes through the pylorus of the stomach and is midway between the jugular notch and the pubic symphysis at the level of LVI/LV2?

<p>Subcostal (Transpyloric)plane</p> Signup and view all the answers

Which fascial layer covers the inner surface of the transversus abdominis muscle?

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

Which layer of the abdominal wall serves to reinforce the portion of the wall that lacks bony support?

<p>Scarpa's fascia</p> Signup and view all the answers

Which layer of the abdominal wall is continuous over the inguinal ligament with the superficial fascia of the thigh?

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

Which muscle of the anterolateral abdominal wall has its fibers divided by tendinous intersections?

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

Where do the superficial lymphatics above the umbilicus drain to?

<p>Axillary nodes</p> Signup and view all the answers

Where do the superficial lymphatics below the umbilicus drain to?

<p>Superficial inguinal nodes</p> Signup and view all the answers

Which artery does the deep parasternal node drainage follow back?

<p>internal thoracic artery</p> Signup and view all the answers

Where do the deep upper lymphatics drain to?

<p>Parasternal nodes</p> Signup and view all the answers

Where do the deep lymphatics below the umbilicus drain to?

<p>External Iliac nodes</p> Signup and view all the answers

Which lymph nodes receive drainage from the anterolateral abdominal wall?

<p>All of the above</p> Signup and view all the answers

Which muscles of the anterolateral abdominal wall function in trunk movement, breathing, defecation, and support?

<p>All of the above</p> Signup and view all the answers

What is the origin of the external abdominal oblique muscle?

<p>Lower 8 ribs</p> Signup and view all the answers

What is the insertion of the transversus abdominis muscle?

<p>Rectus sheath (linea alba)</p> Signup and view all the answers

What is the innervation of the muscles of the anterolateral abdominal wall?

<p>Lower 6 intercostal, subcostal, iliohypogastric &amp; ilioinguinal nerves</p> Signup and view all the answers

Which muscle forms an arch over the spermatic cord in males and the round ligament in females?

<p>Internal abdominal oblique</p> Signup and view all the answers

What is the arterial supply of the superior part of the abdominal wall?

<p>Musculophrenic artery</p> Signup and view all the answers

What is the venous drainage of the superficial epigastric veins in the abdominal wall?

<p>Great saphenous vein</p> Signup and view all the answers

What are the landmarks of the abdomen

<p>costal margin (ribs 7-10) Pubic tubercle &amp; ASIS Iliac crest (L4)</p> Signup and view all the answers

What separates the anterior abdominal wall from the lower limbs?

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What creates the 4 quadrant pattern of the abdominal wall

<p>Horizontal transumbilical plane (L3-L4) Median Plane (xiphoid process to pubic symphysis)</p> Signup and view all the answers

Match each plane to its corresponding quadrant pattern

<p>Nine region = Midclavicular planes (2) Four region = Horizontal Umbilical Plane (L3-L4) Four region = median plane nine region = subcostal(transpyloric) plane (below rib 10)/ intertubercular plane</p> Signup and view all the answers

Which plane passes through the pylorus of the stomach and is found midway between the jugular notch and the pubic symphysis at L1/L2

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Camper's fascia forms dartos fascia as it continues over the scrotum in men

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

Match each muscle to its origin

<p>Rectus abdominis = Pubic crest External abdominal oblique = 8 lower ribs Internal Oblique = lateral 2/3 of inguinal ligament, iliac crest and thoracolumbar fascia Transversus abdominis = lower ribs, lateral 1/3 of inguinal ligament, iliac crest and thoracolumbar fascia</p> Signup and view all the answers

Rectus abdominis inserts into

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Where do external oblique, internal oblique and transversus abdominis insert

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What is the insertion point of the conjoint tendon?

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

Extraperitoneal fascia is anterior to transversalis fascia

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

What is closed in men but has two openings in women where the uterine tubes provide a passage to the outside?

<p>peritoneal cavity</p> Signup and view all the answers

What happens in portal hypertension?

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What is Colles' fascia an extension of?

<p>Scarpa's fascia</p> Signup and view all the answers

Study Notes

Abdominal and Pelvic Cavities

  • The peritoneum separates the abdominal cavity from the pelvic cavity.
  • The inguinal ligament separates the anterior abdominal wall from the lower limb.

Anatomical Landmarks

  • The iliac crest divides the posterolateral abdominal wall from the gluteal region.
  • The abdominal quadrant system is used to describe the location of abdominal organs and related pain.

Abdominal Wall Muscles and Structures

  • The conjoint tendon is formed by the fusion of the internal oblique and transversus abdominis muscles.
  • The rectus sheath is formed by the aponeuroses of the abdominal wall muscles.
  • The external oblique, internal oblique, and transversus abdominis insert into the linea alba.

Innervation and Vascular Supply

  • Nerve supply to the abdominal wall includes the lower intercostal nerves (T7-T11) and the subcostal nerve (T12).
  • The superior part of the abdominal wall receives arterial supply from the inferior epigastric artery and the lower intercostal arteries.

Lymphatic Drainage

  • Superficial lymphatics above the umbilicus drain to the axillary lymph nodes.
  • Superficial lymphatics below the umbilicus drain to the inguinal lymph nodes.
  • Deep upper lymphatics drain to the parasternal lymph nodes.
  • Deep lymphatics below the umbilicus also drain to inguinal lymph nodes.

Muscle Functions and Insertions

  • The rectus abdominis muscle is characterized by tendinous intersections dividing its fibers.
  • The abdominal wall muscles assist in trunk movement, breathing, defecation, and support.
  • The external abdominal oblique muscle originates from the lower eight ribs (ribs 5-12).

Planes and Quadrants

  • A plane that traverses the umbilicus and the intervertebral disc between L3 and L4 is known as the transumbilical plane.
  • A plane that bisects the pylorus of the stomach is located at L1/L2, midway between the jugular notch and the pubic symphysis.

Fascia and Structural Support

  • The transversalis fascia lies deep to the transversus abdominis and is reinforced by extraperitoneal fascia, which is anterior to it.
  • Camper's fascia forms dartos fascia when it transitions into the scrotum in males.
  • Colles' fascia is an extension of the superficial fascia and helps in structural support.

Clinical Considerations

  • In portal hypertension, increased pressure leads to collateral circulation developing due to blocked blood flow through the liver.
  • The processus vaginalis, created during embryonic development, is closed in males but maintains two openings in females where the uterine tubes originate.

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Description

Test your knowledge of the internal and external structures of the abdominal wall with this quiz. Topics covered include linea alba, rectus abdominis, anterior rectus sheath, transversalis fascia, and more.

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