Week 7 digestive system Flashcards
Transports food from mouth to esophagus
Pharynx
Transports food into Stomach
Esophagus
Organ that Produces Chyme
sromach
Organ that Digest and absorbs food
Small Intestines
where feces is stored
rectum
Organ that Absorbs water, Produces feces and Vit K
Large Intestine
There are two types of motility within the Gastrointestinal tract:
Peristalsis
Segmentation
Motility is possible due to the following:
Plexus located within the digestive organs & Smooth muscle found within the digestive organs
What are the two types of plexus located within the digestive organs?
Submucosal &
Myentric
Where does peristalsis take place?
esophagus and stomach
What is the function of perstalsis?
Moves food down the GI tract ,
Coordinated muscle movement, muscles behind food contract
Random smooth muscle contraction :
SEGMENTATION
submucosal plexus is located where?
the submucosa of the organ
where is myentric plexus located?
muscle of the organ
What is segmentation?
Random smooth muscle contraction
Where is segmentation located?
small intestines
What is the function of segmentation?
Mixes food with digestive secretions
What is chyme?
semi digested food
What are the two main functions of the stomach?
Digestion and storage
How does digestion in the stomach work?
gastric juice breaks down food into semi digested food-chyme
How does storage in the stomach work?
sends food in small segments to the duodenum , storing some
What are the three gastric glands found in the stomach?
Mucus neck cells, parietal cells and chief cells
What do the gastric glands secrete and produce?
gastric juice