Conjoined tendon is formed by the aponeuroses of which two muscles?

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Study for the NBME Gross Anatomy High Yield Test. Enhance your learning with flashcards and multiple-choice questions, each detailed with hints and explanations. Prepare effectively for your anatomy exam!

Multiple Choice

Conjoined tendon is formed by the aponeuroses of which two muscles?

Explanation:
The conjoined tendon is formed by the aponeuroses of the internal oblique and transversus abdominis. Their fibers fuse behind the superficial inguinal ring to strengthen the posterior wall of the inguinal canal and attach to the pubic crest and pectineal line. The external oblique mainly contributes to the anterior wall and the superficial ring, while the rectus abdominis contributes to the rectus sheath, not the conjoined tendon. So the two muscles whose aponeuroses form this conjoint tendon are the internal oblique and transversus abdominis.

The conjoined tendon is formed by the aponeuroses of the internal oblique and transversus abdominis. Their fibers fuse behind the superficial inguinal ring to strengthen the posterior wall of the inguinal canal and attach to the pubic crest and pectineal line. The external oblique mainly contributes to the anterior wall and the superficial ring, while the rectus abdominis contributes to the rectus sheath, not the conjoined tendon. So the two muscles whose aponeuroses form this conjoint tendon are the internal oblique and transversus abdominis.

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