| Question |
Answer |
| Digestion begins in |
Mouth |
| 2 functions: |
Digestion: chemically & physically break down food into smaller mosequlr units.-----Absorprion: pass digestied food from Digestive system to circulatory system! |
| 2 types of digestion: |
-Mechanical: food is mixed, chewed & broken down into smaller units-Chemical digestion: enzymes--protines--change chemical make up of the food |
| Three areas of digestion: |
salavary glands:Oral CavityAbdominal cavity |
| Salavary glands: |
inside throat area:-submaxilary gland: paired glands-drain digestive juices => -Wharton's duct:base of tongue-Stensen's duct: Paraded Glands: drains at upper mholers-Sublinqual Gland: Drains contents at base of tongue and joins at wharton's duct- |
| Oral Cavity |
Dentition pattern: determins diet by size, shape and number of teeth. |
| Rats dentention formula: |
Incisor=> 1/1 Canines=> 0/0Premholers=>0/0Mholers=>3/31003 |
| Human dentition formula: |
2123 |
| Space between cheek and teeth |
Vestibule |
| Tongue |
attatched to back floor of mouth by lingual frenula (2)-paletine rougi |
| Top of mouth: |
hard pallett: supported by bone and ridgessoft pallett: muscle =>postiour is the uvula, which only humans have. |
| Structures that drain into oral cavity |
Eustacian tubes drain inner ears ito oral cavity:---external nairs: |
| Tongue: |
covered by papilli-3 types: anterour-fungiform-postirour: fillaform, adjecent to mholler teeth-circumvallate=> most posterour and the biggest. |