Abdominal Wall Inguinal Region

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Author:
ashleesumilat
ID:
290550
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Abdominal Wall Inguinal Region
Updated:
2014-12-03 14:00:03
Tags:
anatomy grossanatomy
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Questions from abdominal wall & inguinal region
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  1. Contents of the rectus sheath
    • 1. Thoracoabdominal nn.
    • 2. Superior epigastric a.
    • 3. Intercostal aa.
    • 4. Inferior epigastric a.
    • 5. Rectus abdominal m
  2. What passes through the superficial inguinal ring?
    • M: spermatic cord + ilioinguinal n.
    • F: ligamentum teres of the uterus + ilioinguinal n.
  3. Contents of
    1) median fold
    2) medial fold
    3) lateral fold
    • 1) obliterated urachus
    • 2) obliterated umbilical aa.
    • 3) inferior epigastric vessels
  4. Umbilical fossae and hernias
    1) central umbilical fossa
    2) medial umbilical fossa
    3) lateral umbilical fossa
    • 1) --
    • 2) direct inguinal hernia (inguinal ∆ of Hesselbach)
    • 3) indirect inguinal hernia
  5. Boundaries of Inguinal ∆
    • Lateral: inferior epigastric vessels
    • Medial: Rectus abdominis
    • Inferior: Inguinal ligament
  6. Walls/Boundaries of inguinal canal
    • A=  External oblique aponeurosis
    • I/F= Inguinal ligament
    • S= Fibers of internal oblique+ transversus abdominis muscle
    • P= Transversalis fascia and conjoint tendon
  7. Characteristics of spermatic cord
    • - Contents: ductus deferens + VAN bundle
    • - Structures meet at deep inguinal ring 
    • - Cord begins lateral to the inferior epigastric vessels*
    • - Gains its coverings as it passes through the inguinal canal and exits the superficial inguinal ring
    • - Coverings derive from the anterolateral abdominal wall
  8. Spermatic cord coverings + origins
    • 1. Internal spermatic fascia // O: Transversalis fascia
    • 2.Cremasteric muscle and fascia// O: Internal oblique muscle
    • 3. External spermatic fascia // O: External oblique aponeurosis

    **Transversus abdominus does NOT contribute to the covering of the spermatic cord
  9. Spermatic cord contents
    • 1. Testicular a.*
    • 2. Ductus deferens*
    • 3. Genital br. of genitofemoral n.*
    • 4. Testicular vv.--Pampinoform plexus*
    • 5. Cremaster m. + a. + v.
    • 6. Obliterated processus vaginalis
    • 7. Autonomic nerves--testicular plexus
    • 8. Fascia: external spermatic, internal spermatic, & cremasteric
  10. Venous return from testis and epididymus--Pampiniform plexus*
    • L testicular v.: drains into L renal v.*
    • R testicular v.: drains directly into IVC*
  11. Lymphatic drainage--testis vs. scrotum
    • Testis: para-aortic (lumbar) lymph nodes
    • Scrotum: superficial inguinal lymph nodes
  12. Indirect inguinal hernia
    • - intestine leaves lateral to inferior epigastric vessels
    • - enters through deep inguinal ring
    • - lies within cord
  13. Direct inguinal hernia
    • - intestine leaves medial to inferior epigastric vessels
    • - protrudes through the inguinal (Hesselbach’s) triangle
    • - Lies outside of the processus vaginalis, parallel to spermatic cord and its coverings

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