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Gastrointestinal tract

Begins with the mouth where food enters and ends with the anus

1

The four functions of the digestive system

Ingestion, digestion, absorption and elimination

2

Ingested

Complex food material taken into the mouth

3

Digested

Broken down, mechanically and chemically as it travels through the gastrointestinal tract

4

Digestive enzymes

Speed up chemical reactions in aid the breakdown of complex nutrients

5

Amino acids

Complex proteins are digested to simple

6

Glucose

Sugars are reduced to simple sugars

7

Fatty acid's. And triglycerides

Three-part fatty acid

8

Cheeks

Form the walls of the oval shaped oral cavity

9

Lips

Sure around the opening to the cavity

10

Hard palate

Forms the anterior portion of the roof of the mouth in the muscular soft palate

11

Soft palate

Lies posterior to the hard palate

12

Rugae

Irregular ridges in the mucous membrane covering the anterior portion of the hard palate

13

Uvula

A small soft tissue projection hangs from the soft palate

14

Tongue

Extends across the floor of the oral cavity and muscles that attach it to the lower jaw bone

15

Mastication and deglutition

Swallowing

16

Papillae

Small raised areas on the tongue containing taste buds that are sensitive to the chemical nature of food and allow discrimination of different tastes as food moves across the town

17

Tonsils

Masses of lymphatic tissue located in depressions of the mucous membranes Lie on both sides of the oropharynx they are filters to protect the body from the invasion of micro organisms and produce lymphocytes, disease fighting white blood cells

18

Gums

Fleshy tissue surrounding the sockets of the teeth

19

Crown

Shows about the gum line

20

Enamel

Protects the tooth

21

Dentin

The main substance of the tooth lies been easy email mall and extends throughout the crown

22

Cementum

Covers, protects, and supports the dentin in the root

23

Periodontal membrane

Surrounds the cementum him and holds the two's in place in the tooth socket

24

Pulp

Lies underneath the dentin

25

Pharynx or throat

Muscular tube about 5 inches long line with a mucous membrane it serves as a passageway both war air traveling from the nose to the windpipe