In the
human body
The human body is the entire structure of a Human, human being. It is composed of many different types of Cell (biology), cells that together create Tissue (biology), tissues and subsequently Organ (biology), organs and then Organ system, org ...
, the adductor longus is a
skeletal muscle
Skeletal muscle (commonly referred to as muscle) is one of the three types of vertebrate muscle tissue, the others being cardiac muscle and smooth muscle. They are part of the somatic nervous system, voluntary muscular system and typically are a ...
located in the
thigh. One of the
adductor muscles of the hip
The adductor muscles of the hip are a group of muscles in the medial compartment of the thigh mostly used for bringing the thighs together (called adduction).
Structure
The adductor group is made up of:
* Adductor brevis
* Adductor longus
* A ...
, its main function is to
adduct the thigh and it is innervated by the
obturator nerve. It forms the medial wall of the
femoral triangle.
Structure
The adductor longus arises from the body of pubis inferior to pubic crest and lateral to pubic symphysis.
It lies ventrally on the
adductor magnus, and near the femur, the
adductor brevis is interposed between these two muscles. Distally, the fibers of the adductor longus extend into the
adductor canal.
It is inserted into the middle third of the medial lip of the ''
linea aspera''.
Innervation
As part of the medial compartment of the thigh, the adductor longus is innervated by the anterior division (sometimes the posterior division) of the
obturator nerve.
The obturator nerve exits via the anterior rami of the
spinal cord
The spinal cord is a long, thin, tubular structure made up of nervous tissue that extends from the medulla oblongata in the lower brainstem to the lumbar region of the vertebral column (backbone) of vertebrate animals. The center of the spinal c ...
from L2, L3, and L4.
[Saladin, Kenneth S. Anatomy & Physiology: The Unity of Form and Function. 5th ed. Boston: McGraw-Hill, 2009.]
Relations
The adductor longus is in relation by its anterior surface with the pubic portion of the
fascia lata, and near its insertion with the
femoral artery and
vein.
By its posterior surface with the
adductor brevis and
magnus, the anterior branches of the
obturator artery,
vein, and
nerves, and near its insertion with the
profunda artery and
vein.
By its outer border with the
pectineus, and by the inner border with the
gracilis.
Actions
Its main actions are to adduct and externally rotate the thigh; it can also produce some degree of flexion/anteversion.
Development
Adductor longus is derived from the
myotome of
spinal roots L2, L3, and L4.
Additional images
File:Gray235.png, Right hip bone. External surface.
File:Gray430.png, Muscles of the iliac and anterior femoral regions.
File:Gray433.png, Deep muscles of the medial femoral region.
File:Gray549.png, The left femoral triangle.
File:Gray550.png, The femoral artery.
File:Gray823.png, The lumbar plexus and its branches.
File:Thigh cross section.svg, Cross section through thigh.
File:Anatomical dissection7.JPG, Adductor longus muscle
File:Slide3eee.JPG, Adductor longus muscle
File:Slide2rrr.JPG, Adductor longus muscle
File:Slide10CCCC.JPG, Adductor longus muscle
File:Slide3FFFFF.JPG, Adductor longus muscle
File:Slide5GGGGG.JPG, Adductor longus muscle
File:Slide5JJJJ.JPG, Adductor longus muscle
File:Slide5LLLL.JPG, Adductor longus muscle
File:Slide16LLLL.JPG, Adductor longus muscle
File:Slide2EA.JPG, Muscles of thigh. Cross section.
File:Slide1DEEA.JPG, Muscles of thigh. Anterior views.
References
External links
*
*
PTCentral
{{DEFAULTSORT:Adductor Longus Muscle
Hip adductors
Hip flexors
Thigh muscles
Medial compartment of thigh