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In the
human body The human body is the 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 systems. They ensure homeostasis and the life, viabi ...

human body
, the adductor longus is a
skeletal muscle Skeletal muscles (commonly referred to as muscles) are Organ (biology), organs of the vertebrate muscular system that are mostly attached by tendons to bones of the skeleton. The muscle cells of skeletal muscles are much longer than in the other ...

skeletal muscle
located in the
thigh In Outline of human anatomy, human anatomy, the thigh is the area between the hip (pelvis) and the knee. Anatomically, it is part of the Human leg, lower limb. The single bone in the thigh is called the femur. This bone is very thick and strong ...

thigh
. One of the
adductor muscles of the hip The adductor muscles of the hip are a group of muscles mostly used for bringing the thigh In human anatomy The human body is the structure of a human being. It is composed of many different types of cells that together create tissues and ...
, its main function is to
adduct An adduct (from the Latin ''adductus'', "drawn toward" alternatively, a contraction of "addition product") is a product of a direct addition of two or more distinct molecules, resulting in a single reaction product containing all atoms of all comp ...
the thigh and it is innervated by the
obturator nerve The obturator nerve in human anatomy arises from the ventral divisions of the second, third, and fourth lumbar nerves in the lumbar plexus; the branch from the third is the largest, while that from the second is often very small. Structure The obt ...
. It forms the medial wall of the
femoral triangle The femoral triangle (or Scarpa's triangle) is an anatomical region of the upper third of the thigh. It is a subfascial space which appears as a triangular depression below the inguinal ligament In human anatomy, the inguinal region refers to eith ...
.


Origin and insertion

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 The adductor magnus is a large triangular muscle, situated on the medial Medial may refer to: Mathematics * Medial magma, a mathematical identity in algebra Geometry * Medial axis, in geometry the set of all points having more than one close ...

adductor magnus
, and near the femur, the
adductor brevis The adductor brevis is a muscle in the thigh situated immediately deep to the pectineus and adductor longus muscle, adductor longus. It belongs to the Adductor muscles of the hip, adductor muscle group. The main function of the adductor brevis ...

adductor brevis
is interposed between these two muscles. Distally, the fibers of the adductor longus extend into the
adductor canal The adductor canal, also known as the subsartorial canal or Hunter’s canal, is an Aponeurosis, aponeurotic tunnel in the middle third of the thigh. It extends from the apex of the femoral triangle to the adductor hiatus. Structure The adductor c ...

adductor canal
. It is inserted into the middle third of the medial lip of the ''
linea aspera The linea aspera ( la, rough line) is a ridge of roughened surface on the posterior surface of the shaft Shaft may refer to: Rotating machine elements * Shaft (mechanical engineering), a rotating machine element used to transmit power * Line s ...
''.


Relations

The adductor longus is in relation by its anterior surface with the pubic portion of the
fascia lata The fascia lata is the deep fascia Deep fascia (or investing fascia) is a fascia A fascia (; plural fasciae ; adjective fascial; from Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European l ...
, and near its insertion with the
femoral artery The femoral artery is a large in the and the main arterial supply to the thigh and leg. The femoral artery gives off the deep femoral artery or and descends along the anteromedial part of the thigh in the . It enters and passes through the , ...
and
vein Veins are blood vessels The blood vessels are the components of the circulatory system The circulatory system, also called the cardiovascular system or the vascular system, is an organ system An organ system is a biological system A b ...
. By its posterior surface with the
adductor brevis The adductor brevis is a muscle in the thigh situated immediately deep to the pectineus and adductor longus muscle, adductor longus. It belongs to the Adductor muscles of the hip, adductor muscle group. The main function of the adductor brevis ...

adductor brevis
and
magnus Magnus, meaning "Great" in Latin, was used as of in the first century BCE. The best-known use of the name during the Roman Empire is for the fourth-century Western Roman Emperor Flavius Magnus the assassin, often just called . The name gained ...

magnus
, the anterior branches of the
obturator artery The obturator artery is a branch of the internal iliac artery that passes antero-inferiorly (forwards and downwards) on the lateral wall of the pelvis, to the upper part of the obturator foramen, and, escaping from the pelvic cavity through the obtu ...
,
vein Veins are blood vessels The blood vessels are the components of the circulatory system The circulatory system, also called the cardiovascular system or the vascular system, is an organ system An organ system is a biological system A b ...
, and
nerves A nerve is an enclosed, cable-like bundle of nerve fibers called axon An axon (from Greek ἄξων ''áxōn'', axis), or nerve fiber (or nerve fibre: see American and British English spelling differences#-re, -er, spelling differences), is a ...
, and near its insertion with the profunda artery and
vein Veins are blood vessels The blood vessels are the components of the circulatory system The circulatory system, also called the cardiovascular system or the vascular system, is an organ system An organ system is a biological system A b ...
. By its outer border with the
pectineus The pectineus muscle (, from the Latin word ''pecten'', meaning comb) is a flat, quadrangular muscle, situated at the anterior (front) part of the upper and medial (anatomy), medial (inner) aspect of the thigh. The pectineus muscle is the most ante ...

pectineus
, and by the inner border with the gracilis.


Actions

Its main actions is to adduct and laterally rotate the thigh; it can also produce some degree of flexion/anteversion.


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 in human anatomy arises from the ventral divisions of the second, third, and fourth lumbar nerves in the lumbar plexus; the branch from the third is the largest, while that from the second is often very small. Structure The obt ...
. 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, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contain ...

spinal cord
from L2, L3, and L4.Saladin, Kenneth S. Anatomy & Physiology: The Unity of Form and Function. 5th ed. Boston: McGraw-Hill, 2009.


Development

Adductor longus is derived from the
myotome A myotome is the group of muscle Skeletal muscles (commonly referred to as muscles) are organs An organ is a group of tissues with similar functions. Plant life and animal life rely on many organs that co-exist in organ systems. A given or ...

myotome
of
spinal rootA nerve root (Latin: ''radix nervi'') is the initial segment of a nerve leaving the central nervous system. Nerve roots can be classified as: *cranial nerves, Cranial nerve roots: the initial or proximal segment of one of the twelve pairs of cranial ...
s L2, L3, and L4.


References


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 thigt. Cross section. File:Slide1DEEA.JPG, Muscles of Thigh. Anterior views.


External links

* *
PTCentral
{{DEFAULTSORT:Adductor Longus Muscle Hip adductors Hip flexors Thigh muscles Medial compartment of thigh