| 翻訳と辞書 |
| neurovascular bundle ： ウィキペディア英語版 |
neurovascular bundle
A Neurovascular bundle (Neuro: Nerve, Vascular: Veins, Lymph vessels and arteries) is a term applied to the body nerves, arteries, veins and lymphatics that tend to travel together in the body.
==Superficial and deep neurovascular bundle==
There are two types of neurovascular bundle: superficial neurovascular bundle and deep neurovascular bundle. As arteries do not travel within the superficial fascia (loose connective tissue under the skin), superficial neurovascular bundle differs from deep neurovascular bundle in both composition and function.
Superficial neurovascular bundle, without arteries in it, is mostly made up of capillaries running through different body tissues. Because capillaries function as the sites for material exchange between interstitial fluid and blood, they tend to have large surface area and short diffusion path. Normally, capillaries are consist of a central lumen lined with an endothelium, a single layer of smooth epithelial cells.
In contrast, deep neurovascular bundle, with arteries in it, has a more complicated composition. Arteries are the vessels that transfer the blood pumped by the heart to the entire body. The blood in arteries have high blood pressure. So outside the endothelium structure, arteries also have a smooth muscle and a connective tissue structure. These compositions enable the arteries to contract and transfer the blood.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「neurovascular bundle」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|