細静脈、小静脈
WordNet
- a minute vein continuous with a capillary (同)venula, capillary vein
- a star-shaped group of venules in the renal cortex
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2014/05/28 07:11:03」(JST)
[Wiki en表示]
Vein: Venule |
Simplified illustration of capillary system - arteries give rise to arterioles, venules from capillaries from veins.
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Latin |
venula |
A venule is a very small blood vessel in the microcirculation that allows blood to return from the capillary beds to the larger blood vessels called veins. Venules range from 7 to 50μm in diameter. Veins contain approximately 70% of total blood volume, 25% of which is contained in the venules.[1]
Venules are blood vessels that drain blood directly from the capillary beds. Many venules unite to form a vein.
Contents
- 1 Structure
- 2 See also
- 3 References
- 4 External links
Structure
Venule walls have three layers: An inner endothelium composed of squamous endothelial cells that act as a membrane, a middle layer of muscle and elastic tissue and an outer layer of fibrous connective tissue. The middle layer is poorly developed so that venules have thinner walls than arterioles. They are extremely porous so that fluid and blood cells can move easily from the bloodstream through their walls.
In contrast to regular venules, high endothelial venules are a special type of venule where the endothelium is made up of simple cuboidal cells. Lymphocytes exit the blood stream and enter the lymph nodes via these specialized venules when an infection is detected.
They form from anastomosis of capillaries, using the beta form of semi-red blood cells and white blood cells to form.
See also
References
- ^ Woods, Susan (2010). Cardiac Nursing. New York: Lippincotts. p. 955. ISBN 9780781792806.
External links
Circulatory system: Arteries and veins (TA A12.0, TH H3.09.02, GA 6.543/GA 7.641)
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Systemic circulation |
(Left heart) → Aorta → Arteries → Arterioles → Capillaries → Venules → Veins → Vena cava → (Right heart)
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Pulmonary circulation |
(Right heart) → Pulmonary arteries → (Lungs) → Pulmonary vein → (Left heart)
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Blood vessels |
- Tunica intima (Endothelium, Internal elastic lamina)
- Tunica media
- Tunica externa
- Vasa vasorum
- Vasa nervorum
- Rete mirabile
- Circulatory anastomosis
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Arteries |
- Nutrient artery
- Arteriole
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Capillaries |
- (Continuous, Fenestrated, Sinusoidal)
- Precapillary sphincter
- Precapillary resistance
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Veins |
- Vena comitans
- Superficial vein
- Deep vein
- Emissary veins
- Venous plexus
- Venule
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Lymphatic |
- Lymphatic vessel
- Lymph
- Lymph capillary
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anat (a:h/u/t/a/l,v:h/u/t/a/l)/phys/devp/cell/prot
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noco/syva/cong/lyvd/tumr, sysi/epon, injr
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proc, drug (C2s+n/3/4/5/7/8/9)
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UpToDate Contents
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English Journal
- 3D Analysis of Intracortical Microvasculature During Chronic Hypoxia in Mouse Brains.
- Yoshihara K, Takuwa H, Kanno I, Okawa S, Yamada Y, Masamoto K.SourceDepartment of Mechanical Engineering and Intelligent Systems, University of Electro-Communications, Chofu, Tokyo, Japan.
- Advances in experimental medicine and biology.Adv Exp Med Biol.2013;765:357-63.
- The purpose of this study is to determine when and where the brain microvasculature changes its network in response to chronic hypoxia. To identify the hypoxia-induced structural adaptation, we longitudinally imaged cortical microvasculature at the same location within a mouse somatosensory cortex w
- PMID 22879056
- Chemokine overexpression in the skin by biolistic DNA delivery.
- Jalili A.SourceDivision of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University of Vienna, Vienna, Austria, ahmad.jalili@meduniwien.ac.at.
- Methods in molecular biology (Clifton, N.J.).Methods Mol Biol.2013;940:175-88. doi: 10.1007/978-1-62703-110-3_15.
- Chemokines are a family of small, secreted proteins that function in leukocyte and tumor cell trafficking and recruiting. CC chemokine ligand 21 (CCL21)/secondary lymphoid chemokine (SLC) belongs to the inflammatory subgroup of chemokines and is expressed by stromal cells in the T-cell-rich zones of
- PMID 23104343
Japanese Journal
- Neural regulation of respiration during exercise -Beyond the conventional central command and afferent feedback mechanisms-
- Ishida Koji,Miyamura Miharu
- The Journal of Physical Fitness and Sports Medicine 1(2), 235-245, 2012
- … The vascular distension hypothesis has advocated that a rapid increase in peripheral blood flow is sensed as a plethysmometric change by the mechanoreceptors around the venule near the contracting muscles, stimulating the respiratory center through group IV afferents so as to match ventilation with metabolic rate. …
- NAID 130001930863
- Kawashima Hiroto
- Trends in glycoscience and glycotechnology 22(126), 211-225, 2010-11-30
- 近年、遺伝子ターゲッティングマウスを用いた研究により、硫酸化糖鎖の様々な生理機能が明らかになってきた。二つの硫酸基転移酵素N-アセチルグルコサミン6-O-スルホトランスフェラーゼ(GlcNAc6ST)-1およびGlcNAc6ST-2を欠損する遺伝子ターゲッティングマウスを用いた解析により、それらの硫酸基転移酵素がリンパ節の高内皮細静脈(HEV)に発現するムチン様糖タンパク質の硫酸化を介してリンパ球 …
- NAID 10027893003
Related Links
- venuleとは。意味や和訳。[名]1 小脈,小葉脈.2 (昆虫の)小翅脈(しみゃく).ven・u・lar[形] - goo英和辞書は14万項目以上を収録し、発音、音声、慣用句、例文が分かる英和辞書です。
- (anatomy) any of the small branches of a vein that receives oxygen-depleted blood from the capillaries and returns it to the heart via the venous system ... venule ven·ule (věn'yōōl, vēn'-) n. A small vein, especially one joining capillaries ...
Related Pictures
★リンクテーブル★
[★]
- 関
- small vein、venula、venulae、venule
[★]
細静脈、小静脈
- 関
- small vein、venulae、venular、venule
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細静脈、小静脈
- 関
- small vein、venula、venular、venule
[★]
- 英
- venule (Z)
- ラ
- venula
- 同
- 小静脈
[★]
- 英
- venule (Z)
- 関
- 細静脈