The internal iliac lymph nodes (or hypogastric) surround the
internal iliac artery
The internal iliac artery (formerly known as the hypogastric artery) is the main artery of the pelvis.
Structure
The internal iliac artery supplies the walls and viscera of the pelvis, the buttock, the reproductive organs, and the medial com ...
and its branches (the ''hypogastric vessels''), and receive the
lymphatics corresponding to the distribution of the branches of it, i. e., they receive lymphatics from all the pelvic viscera, from the deeper parts of the
perineum
The perineum (: perineums or perinea) in placentalia, placental mammals is the space between the anus and the genitals. The human perineum is between the anus and scrotum in the male or between the anus and vulva in the female. The perineum is ...
, including the membranous and cavernous portions of the
urethra
The urethra (: urethras or urethrae) is the tube that connects the urinary bladder to the urinary meatus, through which Placentalia, placental mammals Urination, urinate and Ejaculation, ejaculate.
The external urethral sphincter is a striated ...
, and from the
buttock
The buttocks (: buttock) are two rounded portions of the exterior anatomy of most mammals, located on the posterior of the pelvic region. In humans, the buttocks are located between the lower back and the perineum. They are composed of a laye ...
and back of the
thigh
In anatomy, the thigh is the area between the hip (pelvis) and the knee. Anatomically, it is part of the lower limb.
The single bone in the thigh is called the femur. This bone is very thick and strong (due to the high proportion of bone tissu ...
. The internal iliac lymph nodes also drain the superior half of the rectum, above the
pectinate line
The pectinate line (dentate line) is a line which divides the upper two-thirds and lower third of the anal canal. Developmentally, this line represents the hindgut- proctodeum junction.
It is an important anatomical landmark in humans, and fo ...
.
It does not receive lymph from the
ovary
The ovary () is a gonad in the female reproductive system that produces ova; when released, an ovum travels through the fallopian tube/ oviduct into the uterus. There is an ovary on the left and the right side of the body. The ovaries are end ...
or
testis
A testicle or testis ( testes) is the gonad in all male bilaterians, including humans, and is Homology (biology), homologous to the ovary in females. Its primary functions are the production of sperm and the secretion of Androgen, androgens, p ...
, which drain to the
paraaortic lymph nodes
The periaortic lymph nodes (also known as lumbar) are a group of lymph nodes that lie in front of the lumbar vertebrae near the aorta. These lymph nodes receive drainage from the gastrointestinal tract and the abdominal organs.
The periaortic ly ...
.
Additional images
File:Lymph node regions.svg, Regional lymph tissue
File:Gray623.png, Deep lymph nodes and vessels of the thorax and abdomen.
See also
*
External iliac lymph nodes
The external iliac lymph nodes are lymph nodes, from eight to ten in number, that lie along the external iliac vessels.
They are arranged in three groups, one on the lateral, another on the medial, and a third on the anterior aspect of the vessel ...
*
pararectal lymph nodes
The pararectal lymph nodes are lymph nodes that are in contact with the muscular coat of the rectum.
Structure
The pararectal lymph nodes are located on the left and right of the rectum. Their efferent lymph ducts pass to the pre-aortic lymph n ...
References
{{Portal bar, Anatomy
Lymphatics of the torso