Female reproductive organ which
houses the embryo and fetus before child birth.
Ligaments of uterus
These are the true ligaments of the uterus because they
lengthen with prolapse of that organ and hence must help to hold it in check
False ligaments are
The two are formed from the gubernaculum
artery from the
internal iliac artery
Ovarian artery from
the abdominal aorta. The two anastomose at the mesosalpinx (see below).
The Uterine arteries
have a unique away of supplying the whole of the uterus. Firstly they
divide into anterior and posterior arcuate arteries at the uterine walls.
Then they pass transversely across the uterine tissue anastomosing with
each other (left and right vessels). They provide radial branches which
pass into the myometrial layers and then give the spiral or helicine
arterioles, which supply the endometrium. These helicine arterioles are
important in the process of
veins drain into the internal iliac vein.
drain into the inferior vena cava on the right) and left renal vein on the
left. The two veins anastomose at the mesosalpinx. The rule is for vein
and artery to be in contact so much that materials can diffuse from one to
another in the process known as venoarterial passage. This influences the
circulation, making it a closed one, and a functional portal system, since
venous blood coming from the
contains large amounts of hormones would have diffused its hormones into
the arteries that supply the organs along the mesosalpinx and later on
the sides of the
vagina and the
cervix. There is a longitudinal anastomoses from the
superiorly at the level of the ovary to the
or artery of the vagina below, which is a tributary (or branch) of
pudendal vein. The vessels, which take part in this anastomoses are as
Branches of the
Motor fibers are poorly understood. Vasoconstrictor nerves
are sympathetic and probably motor to uterine musculature.
Sensory fibers are from the paraysympathetic and
Pain from the
mediated via the
(parasympathetic) from S2-4
Pain of labor (uterine) is mediated by sympathetic nerves
from the lower segments of the thoracic spinal cord.
More on uterus
Human Anatomy Laboratory