直腸静脈叢
WordNet
- a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels (同)rete
- of or involving the rectum; "rectal cancer"
PrepTutorEJDIC
- (神経・血管などの)網状組織
- 直腸(rectum)の
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/09/30 01:13:37」(JST)
[Wiki en表示]
Rectal venous plexus |
Scheme of the anastomosis of the veins of the rectum.
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The veins of the right half of the male pelvis.
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Details |
Latin |
Plexus venosus rectalis,
plexus haemorrhoidalis |
Drains to
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Superior rectal vein |
Identifiers |
Gray's |
p.676 |
Dorlands
/Elsevier |
p_24/12648664 |
TA |
A12.3.10.010 |
FMA |
18933 |
Anatomical terminology |
The rectal venous plexus (or hemorrhoidal plexus) surrounds the rectum, and communicates in front with the vesical venous plexus in the male, and the uterovaginal plexus in the female.
A free communication between the portal and systemic venous systems is established through the rectal venous plexus.
Contents
- 1 Parts
- 1.1 Internal plexus
- 1.2 External plexus
- 2 Support
- 3 References
Parts
It consists of two parts, an internal in the submucosa, and an external outside the muscular coat.
Internal plexus
The internal plexus presents a series of dilated pouches which are arranged in a circle around the tube, immediately above the anal orifice, and are connected by transverse branches.
This internal plexus is also known in some medical communities as the Irving plexus.
External plexus
- The lower part of the external plexus is drained by the inferior rectal veins into the internal pudendal vein
- The middle part of the external plexus is drained by the middle rectal vein which joins the internal iliac vein.
- The upper part of the external plexus is drained by the superior rectal vein which forms the commencement of the inferior mesenteric vein, a tributary of the portal vein.
Support
The veins of the hemorrhoidal plexus are contained in very loose connective tissue, so that they get less support from surrounding structures than most other veins, and are less capable of resisting increased blood-pressure.
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
Veins of the abdomen and pelvis
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To azygos system |
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IVC
(Systemic) |
To IVC or left renal vein
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- inferior phrenic
- hepatic
- central veins of liver
- liver sinusoid
- suprarenal
- renal
- gonadal
- ovarian ♀/testicular ♂
- pampiniform plexus ♂
- lumbar
- common iliac
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Common iliac
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Unpaired
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Internal iliac
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posterior:
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- iliolumbar
- superior gluteal
- lateral sacral
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anterior:
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- inferior gluteal
- obturator
- uterine ♀
- vesical
- vesical plexus
- prostatic plexus ♂
- deep of penis ♂/clitoris ♀
- posterior scrotal ♂/labial ♀
- vaginal plexus/vein ♀
- middle rectal
- internal pudendal
- inferior rectal
- bulb of penis ♂/vestibule ♀
- rectal plexus
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External iliac
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- inferior epigastric
- deep circumflex iliac vein
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Portal vein
(Portal) |
Splenic
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- short gastric
- left gastroepiploic
- pancreatic
- inferior mesenteric
- superior rectal
- left colic
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Superior mesenteric
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- right gastroepiploic
- pancreaticoduodenal
- jejunal
- ileal
- middle colic
- right colic
- ileocolic
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Direct
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- cystic
- left gastric/esophageal
- right gastric
- paraumbilical
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Index of the circulatory system
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Description |
- Anatomy
- Arteries
- head and neck
- arms
- chest
- abdomen
- legs
- Veins
- head and neck
- arms
- chest
- abdomen and pelvis
- legs
- Development
- Cells
- Physiology
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Disease |
- Congenital
- Neoplasms and cancer
- Lymphatic vessels
- Injury
- Vasculitis
- Other
- Symptoms and signs
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Treatment |
- Procedures
- Drugs
- beta blockers
- channel blockers
- diuretics
- nonsympatholytic vasodilatory antihypertensives
- peripheral vasodilators
- renin–angiotensin system
- sympatholytic antihypertensives
- vasoprotectives
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UpToDate Contents
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Related Links
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★リンクテーブル★
[★]
- 英
- rectal venous plexus, hemorrhoidal plexus
- ラ
- plexus venosus rectalis
[★]
神経叢
- 関
- plexal、plexuses
[★]
- 関
- rectum
[★]
神経叢
- 関
- plexal、plexus