Structures of the Digestive System Flashcards Preview

Microbiology 39 > Structures of the Digestive System > Flashcards

Flashcards in Structures of the Digestive System Deck (15):
1

What are the two parts to the digestive system?

-Gastrointestinal tract (GI tract)
-Accessory digestive organs

2

What is the Gastrointestinal tract (GI tract)?

-The pathway from the mouth to the anus
-Most organs of the GI tract protected by the peritoneum

3

What is the Accessory digestive organs?

-Grinding food
-Providing digestive secretions

4

What does the Gastrointestinal Tract do?

-Digests food
-Absorbs nutrients and water into the blood
-Eliminates waste

5

Components of the gastrointestinal tract

-Mouth- food is moistened and chewed
-Esophagus-tube leading to the stomach
-Stomach-secretes chemicals to digest foods
-Small intestine-majority of digestion and absorption of nutrients
-Large intestine (colon)-completes absorption of nutrients and water
-Rectum and anus- store and eliminate waste

6

Components of the accessory digestive system

-Tongue and teeth- chew food
-Salivary glands- secrete saliva
-Liver- neutralizes or removes harmful substance, produces bile for digestion
-Gallbladder-concentrates and stores bile that is made in the liver
-Pancreas-pancreatic juice that neutralizes stomach acid, further digests food

7

Components of the Digestive System

-Tongue
-Teeth
-Esophagus
-Stomach
-Duodenum
-Jejunum
-Ileum
-Colon
-Rectum

8

Normal Microbiota of the Digestive System of the Tongue and teeth

Viridans streptococc

9

Normal Microbiota of the Digestive System of the

-Microbiota = microbial antagonists
-Echerichia
-Enterobacter
-Klebsiella
-Mucous membrane

10

Bacterial Diseases of the Digestive System

-Dental caries
-Gingivitis
-Periodontal disease
-Peptic ulcers
-Bacterial gastroenteritis
-Bacterial food poisoning (intoxication)

11

What is Bacterial Gastroenteritis?

-Inflammation of the stomach or intestines due to the presence of bacteria
-Contaminated foods or water

12

General features for Bacterial Gastroenteritis

-Nausea
-Vomiting
-Diarrhea
-Abdominal pain
-Cramps

13

Sever Bacterial Gastroenteritis

Produces loose, frequent stool containing mucus and blood

14

Common viral diseases of the digestive system

-Oral herpes
-Mumps
-Viral gastroenteritis
-Viral hepatitis

15

Two Protozoal gastrointestinal diseases

-Giardiasis
-Amebiasis

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