Iliacus muscle
3042819
224113398
2008-07-07T11:05:16Z
Vedran12
7322109
interwiki hr
{{Muscle infobox |
Name = Iliacus muscle |
Latin = musculus iliacus |
GraySubject = 127 |
GrayPage = 467 |
Image = Anterior Hip Muscles 2.PNG |
Caption = The iliacus and nearby muscles |
Image2 = Gray236.png |
Caption2 = Right [[hip bone]]. Internal surface. (Iliac fossa visible at upper left.) |
Origin = [[iliac fossa]] |
Insertion = [[lesser trochanter]] of [[femur]] |
Action = [[flexes]] and [[rotates laterally]] [[thigh]] |
Antagonist = [[Gluteus maximus muscle|Gluteus maximus]] |
Blood = [[medial femoral circumflex artery]], [[iliac branch of iliolumbar artery]] |
Nerve = [[femoral nerve]] |
MeshName = |
MeshNumber = |
DorlandsPre = m_22 |
DorlandsSuf = 12549271 |
}}
The '''Iliacus''' is a flat, triangular muscle, which fills the [[iliac fossa]].
It arises from the upper two-thirds of this fossa, and from the inner lip of the [[iliac crest]]; behind, from the anterior [[sacroiliac]] and the [[iliolumbar ligament]]s, and base of the [[sacrum]]; in front, it reaches as far as the [[anterior superior iliac spine]] and [[anterior inferior iliac spine]], and the notch between them.
The fibers converge to be inserted into the lateral side of the tendon of the [[Psoas major]], which contributes to flexing the femur anteriorly onto the pelvis. Some of the iliacus fibers may reach the body of the [[femur]], for about 2.5 cm. below and in front of the [[lesser trochanter]].
The Iliacus is sometimes considered a part of the [[Iliopsoas]] group of [[hip flexor]] muscles.
This muscle is innervated by the anterior branches of the Femoral nerve (anterior branches of L2-3).
==Additional images==
<gallery>
Image:Gray95.png|Sacrum, pelvic surface.
Image:Gray245.png|Right femur. Posterior surface.
Image:Gray344.png|Structures surrounding right hip-joint.
</gallery><gallery>
Image:Gray430.png|Muscles of the iliac and anterior femoral regions.
Image:Gray531.png|The abdominal aorta and its branches.
Image:Gray546.png|Structures passing behind the inguinal ligament.
</gallery>
<gallery>
Image:Gray547.png|The relations of the femoral and abdominal inguinal rings, seen from within the abdomen. Right side.
Image:Gray823.png|The lumbar plexus and its branches
Image:Gray827.png|Nerves of the right lower extremity. Front view.
</gallery>
<gallery>
Image:Gray837.png|Sacral plexus of the right side.
Image:Gray1036.png|Posterior view of the anterior abdominal wall in its lower half. The peritoneum is in place, and the various cords are shining through.
</gallery>
==External links==
* {{MuscleLoyola|ilia}}
* {{GPnotebook|-181075889}}
* [http://www.ptcentral.com/muscles/musclelegs.html#illiacus PTCentral]
* {{SUNYAnatomyFigs|40|07|05}} - "Muscles and nerves of the posterior abdominal wall."
* {{NormanAnatomy|pelvis}} ({{NormanAnatomyFig|femalepelvicdiaphragm}}, {{NormanAnatomyFig|malepelvicdiaphragm}})
{{Gray's}}
{{Muscles_of_lower_limb}}
{{muscle-stub}}
[[Category:Hip muscles]]
[[de:Musculus iliacus]]
[[hr:Bočni mišić]]
[[ja:腸骨筋]]
[[pl:Mięsień biodrowy]]