Digestive system.

Presentation on theme: "Digestive system."— Presentation transcript:

1 Digestive system

2 Functions Ingestion Digestion Absorption Compaction Defecation

3 Digestive tract Accessory organs mouth pharynx esohphagus stomach
small intestine large intesine Accessory organs teeth tongus salivary glands liver gallblader pancreas

4 Tissue layers

5 Innervation Swallowing - Ⅴ, Ⅶ, Ⅸ, Ⅹ, Ⅺ, Ⅻ, ansa cervicalis
Salivary glands - Ⅶ, Ⅸ Esophagus~anal canal - ANS

6 Circulation 6

7

8

9 Peritoneum

10 Peritoneum

11 Intraperitoneal - Retroperitoneal -

12 Mouth

13 Tongue Ⅻ Ⅹ Ⅺ Ⅴ Ⅶ

14 Teeth 20 32 2 3 6~30month 6~25years incisor canine molar 2 1 incisor
premolar molar 2 1 3 32 2 3 6~25years

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16 * permanent teeth

17 Salivary glands amylase lingual lipase mucus lysozyme Ig A electrolyte
mumps, serum amylase lingual lipase mucus lysozyme Ig A electrolyte mixed mucus

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19 Pharynx & Esophagus Skelectal Mix Smooth T10, esophageal hiatus

20 Stomach 50ml ➠ 1~1.5L ➠ 4L Digestion of proteins & fat

21 HCl VS mucus HCl, intrinsic factor(B12), lipase, pepsinogen
Mucous coat Tight junctions Epithelial replacement gastrin

22 분비세포 분비물 기능 목점액세포 점액 염산과 효소로부터 점막층 보호 벽세포 염산 펩신과 침 지질분해효소를 활성 내인성인자
작은창자가 B12를 흡수할 수 있게 함 그렐린 위가 비었을 때 배고픔의 감각을 인식하게 함 으뜸세포 펩시노겐 펩신을 소화단백질로 전환 G세포 가스트린 염산과 효소를 분비 촉진(주로 벽세포 자극) D세포 소마토스타틴 위분부물과 운동 억제(주로 벽세포 억제) 친크롬은세포 히스타민 염산 분비 촉진(벽세포 자극) 세로토닌 위운동을 자극

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24 Small intestine 4~8m 25cm duodental papillia peyer patches 2.5cm 텍스트
돌막창자판막 peyer patches

25 absorb mucus chyle Intestinal crypts -resist bacterial invasion

26 Large intestine Immune cell Simple columnar epithelium - absorb

27 Involuntary Voluntary Hemorrhoids

28 Accessory glands of digestion
Liver Gallbladder Pancreas

29 Function of the liver Digestion Bile acids, lecithin
Carbohydrate metabolism Galactose ➢ glucose, Stabilizes blood glucose, Lipid metabolism Lipogenesis Protein & amino acid metabolism Remove NH2, Ammonia ➢ Urea, N ➢ urine Synthesis of plasma proteins Vit D3 ➢ Calcidiol, Suply Vit D, Vit A, Vit B12 Disposal of drug, toxins, hormones Detoxifile, Bilirubin Cleansing of blood Hepatic macrophages

30 liver 1.4kg,

31 Hepatic triad Hepatic lobule Kupffer cells

32 온간동맥

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34 Gallbladder Rt. Lt. Store & Concentrate the bile Sphincter of oddi

35 Pancreas Store & Concentrate the bile Sphincter of oddi Rt. Lt.
Endocrine - α(glucagon), β(Insulin), δ(somatostantin) Exocrine - zymogens, Enzymes

36 Exocrine Secretions of the Pancreas
Function Sodium bicarbonate Neutralizes HCl Zymogens Active digestive enzymes trypsinogen becomes trypsin, protein chymotrypsinogen becomes chymotrysin, protein procarboxypeptidase becomes carboxypeptidase, aminoacid Enzymes amylase Digests starch lipase Digests fat ribonuclease Digests RNA deoxyribonuclease Digests DNA

37 인슐린 글루카곤 소마토스타틴

38 microscopic anatomy of th pancreas