Digestive system
Bile from the liver and digestive juices from the pancreas enter which section of the small intestine?
duodenum
Amylase chemically breaks down its substrate into what products?
maltose
Benedict's reagent detects the presence of what?
maltose
Digestion begins in the...
mouth
Where does starch digestion begin?
mouth
submandibular gland
produces 60-70% of saliva
Place the following parts of the small intestines in order from proximal to distal.
1. Duodenum 2. Jejunum 3. Ileum
Place the following organs of the digestive tract in order from proximal to distal.
1. oral cavity 2. esophagus 3. stomach 4. small intestine 5. large intestine 6. rectum
Pepsin is most effective at a pH of
2.0
What is the optimal pH for amylase?
6.8
paratoid gland
Produces 25-30% of saliva
sublingual gland
Produces 3-5% of saliva
Salivary amylase digests
carbohydrates
Accessories to GI tract:
liver, gallbladder, pancreas, salivary glands, teeth
During digestion, the major site of nutrient absorption is the...
small intestine
Amylase in an enzyme specific to what substrate?
starch
Which of the following is the substrate for carbohydrate digestion?
starch
Part of GI tract:
stomach, small intestine, large intestine, esophagus, rectum
