WordNet

slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled; "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base"
any grammatical case other than the nominative (同)oblique case
work as an intern; "The young doctor is interning at the Medical Center this year"
an advanced student or graduate in medicine gaining supervised practical experience (`houseman is a British term) (同)interne, houseman, medical intern
deprive of freedom; "During WW II, Japanese were interned in camps in the West"
happening or arising or located within some limits or especially surface; "internal organs"; "internal mechanism of a toy"; "internal party maneuvering"
occurring within an institution or community; "intragroup squabbling within the corporation" (同)intragroup

PrepTutorEJDIC

傾いた,斜めの / 間接の,遠回しの / 〈C〉〈U〉斜線(/)
(特に戦時中)〈人・船など〉‘を'強制収容する,抑留する
『内側の』,内部にある / 『国内の』(domestic) / 内からとる,内用の

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/12/16 19:48:38」(JST)

wiki en

The internal oblique muscle (of the abdomen) is the intermediate muscle of the abdomen, lying deep to (below) the external oblique and just superficial to (above) the transverse abdominal muscle.

Structure

Its fibers run perpendicular to the external oblique muscle, beginning in the thoracolumbar fascia of the lower back, the anterior 2/3 of the iliac crest (upper part of hip bone) and the lateral half of the inguinal ligament. The muscle fibers run from these point superiomedially (up and towards midline) to the muscle's insertions on the inferior borders of the 10th through 12th ribs and the linea alba (abdominal midline seam).

In males, the cremaster muscle is also attached to the internal oblique.

Innervation

The internal oblique is innervated by the lower intercostal nerves, as well as the iliohypogastric nerve and the ilioinguinal nerve.

Function

The internal oblique performs two major functions. First, it acts as an antagonist (opponent) to the diaphragm, helping to reduce the volume of the thoracic (chest) cavity during exhalation. When the diaphragm contracts, it pulls the lower wall of the chest cavity down, increasing the volume of the lungs which then fill with air. Conversely, when the internal obliques contract they compress the organs of the abdomen, pushing them up into the diaphragm which intrudes back into the chest cavity reducing the volume of the air filled lungs, producing an exhalation.

Secondly, its contraction rotates and side-bends the trunk by pulling the rib cage and midline towards the hip and lower back, of the same side. It acts with the external oblique muscle of the opposite side to achieve this torsional movement of the trunk. For example, the right internal oblique and the left external oblique contract as the torso flexes and rotates to bring the left shoulder towards the right hip. For this reason, the internal obliques are referred to as "same side rotators."

References

Moore, Keith L; & Dalley Arthur R (2006). Clinically Oriented Anatomy (5th ed.). Lippincott Williams and Wilkins. ISBN 0-7817-3639-0.
Abdominal, unm.edu

Additional images

Diagram of a transverse section of the posterior abdominal wall, to show the disposition of the lumbodorsal fascia.
Diagram of sheath of Rectus.
Diagram of a transverse section through the anterior abdomina wall, below the linea semicircularis.
Femoral sheath laid open to show its three compartments.
Lumbar triangle
Internal abdominal oblique muscle.Anterior abdominal wall.Deep dissection.Anterior view

External links

Wikimedia Commons has media related to Abdominal internal oblique muscle.

-120586161 at GPnotebook
Origin, insertion and nerve supply of the muscle at Loyola University Chicago Stritch School of Medicine
Anatomy figure: 35:07-05 at Human Anatomy Online, SUNY Downstate Medical Center - "Incision and reflection of the internal abdominal oblique muscle."
Anatomy image:7526 at the SUNY Downstate Medical Center
internal+oblique+muscle at eMedicine Dictionary

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. 腹壁の解剖学 anatomy of the abdominal wall
2. 開腹手術における切開 incisions for open abdominal surgery
3. 腹壁閉鎖の原則 principles of abdominal wall closure
4. 運動選手および活動的な成人における股関節痛および鼠径部痛に対するアプローチ approach to hip and groin pain in the athlete and active adult
5. 冠動脈バイパス術：失敗の原因および割合 coronary artery bypass graft surgery causes and rates of graft failure

English Journal

Abdominal bracing during lifting alters trunk muscle activity and body kinematics.

Coenen P1, Campbell A1, Kemp-Smith K1, O'Sullivan P1, Straker L2.
Applied ergonomics.Appl Ergon.2017 Sep;63:91-98. doi: 10.1016/j.apergo.2017.04.009. Epub 2017 Apr 22.
PMID 28502411

CAIPIRINHA accelerated SPACE enables 10-min isotropic 3D TSE MRI of the ankle for optimized visualization of curved and oblique ligaments and tendons.

Kalia V1,2, Fritz B3, Johnson R4, Gilson WD5, Raithel E6, Fritz J7.
European radiology.Eur Radiol.2017 Sep;27(9):3652-3661. doi: 10.1007/s00330-017-4734-y. Epub 2017 Jan 23.
PMID 28116515

Localization of the trunk muscles using musculoskeletal ultrasound guidance for pedicle screw stimulation during spine surgery.

Yang TF1, Chiu JW2, Feng CK3, Hsieh YC4, Yang CY2, Wang JC2, Liao KK5.
Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia.J Clin Neurosci.2017 Sep;43:151-156. doi: 10.1016/j.jocn.2017.05.037. Epub 2017 Jun 7.
PMID 28601574

Japanese Journal

野球投手の体幹筋における形態的特性

九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University 7(2), 43-49, 2017-03-31
NAID 120006304556

Non-traumatic Internal Oblique Muscle Hematoma

Internal
NAID 130005632032

A comparison of the shoulder and trunk muscle activity according to the various resistance condition during push up plus in four point kneeling

Journal of Physical Therapy Science 29(1), 35-37, 2017
NAID 130005306414

「内腹斜筋」

Abdominal internal oblique muscle
	Muscles of the trunk.
	The Obliquus internus abdominis.
Details
Latin	Musculus obliquus internus abdominis
Origin	Inguinal ligament, Iliac crest and the Lumbodorsal fascia.
Insertion	Linea alba, Pecten Pubis (via Conjoint tendon) and ribs 10-12.
Artery	subcostal arteries.
Nerve	Thoracoabdominal nn. (T6-T11), Subcostal n. (T12), Iliohypogastric n. (L1) and Ilioinguinal n. (L1)
Actions	Compresses abdomen; unilateral contraction rotates vertebral column to same side.
Identifiers
Gray's	p.412
TA	A04.5.01.017
FMA	FMA:13891
	Anatomical terms of muscle