ネフロン
WordNet
- any of the small tubules that are the excretory units of the vertebrate kidney (同)uriniferous_tubule
UpToDate Contents
全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.
- 1. 老化する腎臓the aging kidney [show details]
…nonsclerosed) declines with age . Low nephron endowment associated with low birth weight may accelerate the age-related decline in functional nephrons in adulthood . Nephron size (both glomerulus and tubule) …
- 2. 急性腎障害でのナトリウム、尿素、その他の成分の排泄率fractional excretion of sodium urea and other molecules in acute kidney injury [show details]
…more normal nephrons. A low FENa is appropriate in these nephrons due to the continued renal ischemia and can be achieved since tubular function is relatively intact. The injured nephrons do not prevent …
- 3. 小児の慢性腎臓病：定義、疫学、病因、経過chronic kidney disease in children definition epidemiology etiology and course [show details]
…the sum of the filtration rates of all of the functioning nephrons. A reduction in GFR implies a decrease in the number of functioning nephrons due to underlying disease/injury or initial reduction due …
- 4. 原発性（本態性）高血圧の病因における低出生体重の潜在的役割possible role of low birth weight in the pathogenesis of primary essential hypertension [show details]
…growth leads to impaired renal development . The decrease in the number of nephrons results in compensatory hypertrophy in the nephrons present; the associated intraglomerular hypertension can then lead, over …
- 5. 成人における腎移植：移植片機能不全の危険因子kidney transplantation in adults risk factors for graft failure [show details]
…disproportionately fewer nephrons, and ratio of donor kidney weight to recipient weight: Old and very young donor kidneys – Old and very young kidneys have relatively decreased numbers of functioning nephrons and survive …
English Journal
Japanese Journal
Related Links
- Nephron (from Greek νεφρός - nephros, meaning "kidney") is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as ...
- The nephrort and ureteral system in the fowl were investigated by the anatomical and histological observation. The nephron was classified into Nephronum corticale and medullare according to their location in the lobule. The collecting ...
★リンクテーブル★
[★]
- 英
- nephron (Z)
- ラ
- nephronum
- 同
- 腎単位
- 関
- 皮質ネフロン、傍髄質ネフロン
- 図：SP.776
- 腎臓の機能的な単位
- ネフロン = 腎小体 + 尿細管
- ヒトのネフロンの数は片側の腎臓で約100万個といわれているが、ネフロンの数は個人差がある。
- ネフロンの数は平均血圧と反比例している
皮質ネフロンと傍髄質ネフロンとの解剖的な違い
|
|
皮質ネフロン
|
傍髄質ネフロン
|
| 腎小体
|
皮質に存在
|
髄質に近い皮質
|
| 直血管
|
×
|
○
|
| ヘンレループの下行脚
|
○
|
○
|
| ヘンレループの細い上行脚
|
×
|
○
|
| ヘンレループの太い上行脚
|
○
|
○
|
皮質ネフロンと傍髄質ネフロンとの機能的な違い
- ネフロンにより貢献する役割が異なる
- 皮質ネフロン ：不揮発酸やK分泌
- 傍髄質ネフロン：水分再吸収・Na再吸収