gastro intestinal system

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main 2 functions of gastro intestinal system
- nutrient intake
- solid waste elimination
what are the 6 main organs of the gi system
- mouth (oral cavity)
- esophagus
- stomach
- small intestine
- large intestine
- rectum
mouth (oral cavity) main functions

contains tongue and teeth
prehension?

process of getting food into mouth
masticaton
process of grindnig up food or chewing
degluttion

process of swallowing food
main functions of saliva
- produced by mouth by salivy glands
- contains enzymes which lubricate and break down food
salivation

reflex action in respinse to presence of food
where are the salivary glands located?
- parotid
- mandibular
- sublingual
- zygomatic
main facts and functions of esophagus
- long tubular muscle
- only function is to transport food from mouth to stomach
- transports by peristalsis (wave like motion by involuntary muscles)
main functions of stomach
- stores food for short time
- digestive enzymes and hydrochloris acid continue to breakdown food
main functions of small intestine
- digestion and absorbtion of water electrolytes nutrients
- sponge like surface full of folds and turns to increase absorptive area
- consists three parts of duodenum jejunum ileum
what are the three parts of the small intestine?
- duodenum
- jejunum
- ileum
what are the 2 other organs involved
- liver
- pancreas
main functions of the liver
- largest organ in body
- storage area for blood
- regulates total circualting blood volume
- stroage area for iron
- produces bile which is stored in the gallbladder
main functions of pancreas
- internal secretion, produces insulin and glucagon
- external secretion,pancreatic enzymes released into small intestine
- helps to break down food

Author

eleanorgwenmurtagh

189725

Card Set

gastro intestinal system

Description

midterm prep

Updated

2012-12-16T05:03:20Z

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