Module 6 Flashcards
Digestive system fn
-breakdown of food/liquid in order to get cell building blocks–BIOMOLECULES like glu
ingestion means
intake of food and liquid
digestion means
processing/breakdown of food and liquid
Secretion also occurs a lot
types of digestion
- Mechanical: ie chewing
2. Chemical: breakdown with enzymes
The digestive tract is…
(AKA Alimentary Canal) the whole thing starting from the mouth all the way to the anus
Digestive system accessory organs
- teeth
- tongue
- pancreas
- liver
- salivary glands
Digestive tract layers (in>out)
- lumen
- Mucosa
- submucosa
- muscularis externa
- serosa
layers of mucosa (inner>outer)
- epithelium
- lamina propria
- muscularis mucosae
Muscularis externa laters (in>out)
- circular muscle layer
- longitudinal layer
peritoneal cavity has these serous membranes
- viseral peritoneum (inner)
- parietal peritoneum (outer)
Mesenteries meaning
extensions of the peritoneum that join organs
List the mesenteries
- Greater omentum: biggest, provides fat storage and padding for organ protection
- Lesser omentum: joins the stomach to the liver
- Mesentary proper: between the coils of the small intestine
- Mesocolon: holds large intestine in place
Oral Cavity Proper includes
inner surface of gums, teeth, tongue, pharynx
Tongue fn
- taste
- shape the bolus
Bolus def
ball of food
Salivary Glands list
- Parotid gland: from ramus
- Sublingual gland: below tongue
- Submandibular gland: below mandible
Teeth fn and names
ripping, tearing and grinding
- incisors
- canine
- premolars
- molars
Tooth structure names
- enamel
- dentin
- gingiva
- cementum
- root canal
- apical foramen
- pulp cavity
- crown
- neck
- root
peristalsis is
the downward movement in the esophagus, caused by the muscle contractions
Gross anatomy of the stomach
- cardia
- fundus: hold big meal
- body
- rugae
- Pylorus
- pyloric sphincter
- lesser curvature
- greater curvature
(deep: -gastric gland
- gastric pit
Stomach actions
mixing of food, protein digestion
Gastric gland parts aka gastric pit
- mucous cells:
- parietal cells: HCl
- chief cells: pepsinogen
- G-cells: release gastrin
pH of stomach :
1.8
ph of mucous layer
7, helps protect the cells against the acidity of stomach cells