PREGLEDNI LANCI - PROFESSIONAL REVIEWS PRAXIS MEDICA 2005 ...

PREGLEDNI CLANCI - PROFESSIONAL REVIEWS

PRAXIS MEDICA

2005; 33 (1-2) 77-80

HISTOLO[KA GRA\A TANKOG CREVA

Krivoku}a D.1, [aranovi} \.2, Vukovi} M.3, Moqevi} M.3, Eri} M.1 1Zavod za anatomiju, Medicinski fakultet Novi Sad 2Katedra za radiologiju, Medicinski fakultet Beograd 3Klini~ki centar Novi Sad, Institut za hirurgiju, Klinika za abdominalnu i endokrinu hirurgiju

HISTOLOGICAL STRUCTURE OF SMALL INTENSTINE

Krivoku}a D.1, [aranovi} \.2, Vukovi} M.3, Moqevi} M.3, Eri} M.1 1Department of Anatomy, Medical Faculty Novi Sad 2Department of Radiology, Medical Faculty Belgrade 3Clinical Center Novi Sad, Institute for Surgery, Clinic for abdominal and endocryne surgery

SUMMARY

The surface area of the small intestine is enhanced by three morphologic features that are peculiar to the gut: plicae circulares, the villi and the microvilli. The plicae circulares (circular folds) consist of mucosal/submucosal invaginations that are predominantly located in the duodenum and jejunum. These infoldings are visible on gross inspection. The intestinal villi, finger-like projections that protrude into the intestinal lumen, are approximately 0,5-1,5 mm long and cover the mucosal surface. They can be viewed by close inspection of the mucosa under low-power microscopy. Their microscopic appearance varies: duodenal villi are characteristically broad and leaf-shaped, jejunal villi are tall and thin, and ileal villi are short and broad. The length and shape of the villi also vary with geographic region. At the base of the villi, the epithelium enters the lamina propria and forms the crypts of Lieberk?hn, which extend almost to the muscularis mucosae. The microvilli are sub-light microscopic tubular projections that are extensions of the apical cell membrane and compose the brush border. There are the enzymes and receptors in these structures which are required for terminal digestion and absorption.

Key words: Small intestine, Mucosa, Plicae circulares, Villi, Microvilli.

SA@ETAK

: (plicae circulares), (villi intestinales) (microvilli). / . . , , 0,5-1,5 . . . . , . , , . Lieberk?hn- . (brush border). .

Kqu~ne re~i: T , S, K , C , M.

. 3 , . 2,5 , .(1)

, . , , .

1) UCOSA . , . .

) (plicae circulares; Kerckring- ) . 1,0-1,5 . , , , . , , . ,

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2005; 33 (1-2) 77-80

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PREGLEDNI CLANCI - PROFESSIONAL REVIEWS

8 . 5 . papillae duodeni major , , . . .(2) . erckring- , .(3)

) (villi intestinales) ( ) () , , . . , 0,5-1,5 , 0,1 . 20 - 30 2. . . .(4) .(3)

( ), , . , , . (Bricke- , ) "", . . . , , () .

) (microvilli) - . - 1 0,1 . 1 2 200 .

1 2. , , , -

15-30 , 900 2.(5)

(glandulae s. cryptae intestinales; Lieberk?hni). Lieberk?hn- 0,2 - 0,5 . , .

(epithelium) Lieberk?hn- . , Lieberk?hn- . , , Lieberk?hn- . . Lieberk?hn- : , , Paneth- , , - () . , . 4 16. , . .(4)

(; epitheliocytus columnaris villi) . . , 25 ?. . , Golgi , , . () . (; brush border) .(5)

. . , , , ( ), ( ) ( ).(4)

(zonulae adherens desmosom). , , , . (5)

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PRAXIS MEDICA

2005; 33 (1-2) 77-80

1,5-3 . , Lieberk?hn- , ( ; extrusion zone).(5)

(exocrinocytus caliciformis) . ( ), . . , . Golgi , .

. .(5)

, Lieberk?hn- . (theca), . . 4 - 6 . Lieberk?hn- . , . , , , ( ). (alcian blue positive) .(5)

PANETH- ( ) Lieberk?hn- . . . , Paneth- . , , . . , Paneth- , .

Paneth- - ,

, . -5 -6 . (30-35 ) "in vitro". (4)

Paneth- . 30 .

( ) Lieberk?hn- , . , , , ( ) HCl.(5)

.(4)

- Payer- . - . , (microfold cells).(5) - , , - . - , , . . , . - .(5) .

- Lieberk?hn- .

( ) Lieberk?hn- Paneth- , . , . . - , , Paneth- -

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.(5) Paneth- -

2 - 6 . Lieberk?hn- , , , . Paneth- , , Lieberk?hn- .(5)

Lamina propria Lieberk?hn- . , , , , . , .(5) - / CD4+, / (CD8+). -. (Ig), Ig IgG.(4)

- Payer . Payer- 10-400 e . Payer- 12-20 , 8-12 , 30 .(4) . Payer- , -. Payer- 11. .(5) Payer- , Payer- .(4) Payer- .

, .

Lamina muscularis mucosae : - - . Bricke- .(5) Bricke- , -

, .

2) SUBMUCOSA , , Kerckring- . - (plexus submucosus; eissneri). eissner- uerbach- . .(4)

3) TUNICA MUSCULARIS : - - . (plexus myentericus; Auerbachi). :

- - ;

- - , , .

4) SEROSA . , -, . .(5)

LITERATURA

1. Sljivi B.: Sistematska i topografska anatomija abdomen i karlica. Sedmo izdanje, Naucna knjiga, Beograd 1991; 83.

2. Bannister L.H.: Alimentary system. In: Bannister L.H., Berry M.M., Collins P., Dyson M., Dussek J.E., Ferguson M.W.J.: Gray's anatomy; Churchill Livingstone, New York Edinbourgh London Tokyo Madrid and Melbourne 1995; 1766-7.

3. Sobi V., Sobi P., Saranovi .: Radiologija digestivnog trakta. U: Lazi J., Sobi V.: Radiologija. Medicinska knjiga, Medicinske komunikacije, Beograd 1997; 185-241.

4. Rubin D.C.: Small intestine: Anatomy and Structural Anomalies. In: Yamada T.: Textbook of Gastroenterology. 2nd Edition, J.B. Lippnicott Company, Philadelphia, 1995; 1557-64.

5. Somer Lj., Anelkovi Z.: Digestivni trakt. U: Anelkovi Z., Somer Lj., Perovi M., Avramovi V., Milenkovi Lj., Kostovska N. i sar. Histoloska graa organa. GIP "Bonafides", Nis 2001; 45-9.

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