internal oblique muscle

noun

A flat muscle situated under the external oblique muscle in the lateral and ventral part of the abdominal wall, that have aponeuroses extending medially to ensheathe the rectus muscles and fusing in the midventral line in the linea alba, and that act to compress the abdominal contents and to assist in expelling the contents of various visceral organs (as in urination, defecation, parturition, and expiration).

Similar
obliquus internusobliquus internus abdominis

Meanings

nouninternal oblique muscle (plural internal oblique muscles)

plural internal oblique muscles · alternative internal oblique

  1. anatomyA flat muscle situated under the external oblique muscle in the lateral and ventral part of the abdominal wall, that have aponeuroses extending medially to ensheathe the rectus muscles and fusing in the midventral line in the linea alba, and that act to compress the abdominal contents and to assist in expelling the contents of various visceral organs (as in urination, defecation, parturition, and expiration).

    Synonyms: obliquus internus, obliquus internus abdominis

Synonyms & antonyms

nounA flat muscle situated under the external oblique muscle in the lateral and ventral part of the abdominal wall, that have aponeuroses extending medially to ensheathe the rectus muscles and fusing in the midventral line in the linea alba, and that act to compress the abdominal contents and to assist in expelling the contents of various visceral organs (as in urination, defecation, parturition, and expiration).

Similar
obliquus internusobliquus internus abdominis

Translations

Chinese Mandarin 腹內斜肌 /腹内斜肌
  • 腹內斜肌 /腹内斜肌 (fùnèixiéjī)muscle
Cite this entry
APA

internal oblique muscle. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/internal%20oblique%20muscle

MLA

“internal oblique muscle.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/internal%20oblique%20muscle. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “internal oblique muscle,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/internal%20oblique%20muscle.

Source: internal oblique muscle on Wiktionary, CC BY-SA 4.0.