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How is the pH scale and “inverse scale?
It’s an inverse scale because the more Hydrogen ions there are, the more acidic and the lower the number on the scale.
What is the pH levels for cells, blood, stomach, and small intestine?
cells= 6.8
blood= 7.4
stomach= 1.5 (acidic)
small intestine= 7-9
What systems control pH levels of the body.
Urinary, respiratory and circulatory systems all control pH levels using feedback loops to maintain homeostasis.
Breathing out= lowers pH
secreting ammonia= removes hydrogen ions and increase pH
Bicarbonate can also be reabsorbed by urinary system organs like kidneys which lowers pH
What are the organs and accessory organs of the digestive system
oral cavity
tongue
esophagus
stomach
small intestine
large intestine
rectum
liver
gallbladder
what are the function of each organ?
oral cavity- teeth and saliva are the initial breakdown of food
tongue- muscle that moves food from oral cavity to esophagus
esophagus- transports food from mouth to esophagus
stomach- uses enzymes and stomach acid to break down food in stomach to make a paste
small intestine- continues to break down food using bile and absorbs nutrients. Bile breaks down fats and vitamins and removes waste
large intestine- processes waste for defecation
rectum- stores and releases stool
liver- produces bile
gallbladder- stores bile/ brings it to the small intestine
what organs use chemical and mechanical digestion?
Mechanical
-stomach/contracts
oral cavity/ teeth
Chemical
-oral cavity/ saliva
stomach/acid
small intestine/ bile
large intestine
what enteric coating?
protects the active ingredients of a medication from enzymes in saliva and stomach acid
it will only dissolve in the basic/alkaline environment of the small intestine
Note 
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