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Digestion
- Break down food into engery through blood stream
- Break down marco particals to micro particals
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Accesary Organs
Secretes Enzymes
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Intestines
30ft conviluted open ended tube
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Extrinsic Stimuli
brought on with sight or smell
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Intrinsic Stimuli
the feeling of hungar
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Leptin
Chemical takes makes you eat
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Mechanical Digestion
Chewing of food, breaking down by chewing
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Propulsion
Waves made by muscles that push food down
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Peristaisis
being squezzed in one direction
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Segmentation
Turning or twisting of food through around itself though intestines
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Chemical Digestion
Enzyme breakdown
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Absorption
Food absortion takes place in small intestines
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Large Intestine
Water is reabsorbed here then leaves body
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Abdominal Cavity
Intestines in center of abdominal cavity
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Partietal Peritoneum
under skin inside layer of trunk
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Visceral Peritoneum
Outside layer of GI track-"guts"
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Peritoneal Cavity
Between both visceral and parietal cavities, has fluid
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Peritonitis
- Infection in the peritoneal cavity
- Anti-biotics cure
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Appendix
- No use
- Can get infected and will spread into peritoneal cavity, causes peritonitis
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Celulase
- Secreted by appendix to break down greens
- Vestigual organ
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Retroperitoneal Position
When GI Track is shifted from center
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GI Track Layers
- Lumen
- Mucosa
- Submucosa
- Muscularis
- Serosa
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Lumen
Passage tube-not a layer
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Mucosa
- Secretes mucus
- Goblet cells that secrete mucus
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Submucosa
- Lots of blood vessels
- Goes top to bottom
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Muscularis
- Muscles
- Longitudinal and Circular
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Tunics
Layers of GI track
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Adventia
- Layer only in retroperitoneal organ
- Only large intestine and oral cavity
- Esophagus only has adventia no serosa
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Enteric neurons
Nerves that connect brain to GI track circulation
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Slanchnic
Blood vessels that supply blood to tunics
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Oropharynx
- Back of mouth
- leads to laryngopharynx
- nose and mouth join together here
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Epiglottis
- Gate between oropharynx and laryngopharynx
- gate keeper for oral and trachea tubes
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Uvula
Launguage-vowels and sounds of words and controls food volume
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Language
The movement of air, uvula and tongue
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Ankyloglossia
Tongue tied, short lingual frenulum
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3 Saliva Glands
- Sublingual
- Submandibular
- Parotid
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Parotid Gland
Mumps-infection that happens here
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Myxo viris
- Mumps-infection-in children
- Men become sterile
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Saliva
- 99.5% water
- Ph-7-neutral
- Dilutes think mucas
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Lysozine
enzyme breaks bacteria membrane to kill it with saliva
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Mastagate
Chewing break down of food
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Tooth Parts
Crown, Neck, Root
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Odantoblast
Forming of teeth
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Enamel
- Outer egde of tooth
- Calcium rich
- Strongest stuff on earth
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Dentin
Lush part of tooth between enamel and pulp
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Pulp Cavity
Blood vessels and nerves
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Cementum
Hold tooth in socket
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Periodontal ligament
Alots a little of movement of teeth
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Gomphousis
Holds tooth in joint
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Plauque
Dead cells-both invading and fighting cells that covers tooth
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Filling
Fill up dentin to protect pulp
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Calcification
Calcium sites on tooth
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Gingivitous
infection of the gums
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