Parts of the Digestive Tract
The Pharynx.
Where is bile stored?
The gallbladder.
What are two primary organs required for mechanical digestion in the mouth?
Teeth, tounge.
How many teeth does an adult have?
32
How long is the small intestine?
Around 22 feet,
What is the first place carbohydrate digestion begins and what enzyme is involved?
Salivary amylase, the mouth.
What is the process of grinding and processing food in the mouth called?
What are the three purposes of the digestive system?
Elimination, secretion, absorbtion.
What are the three parts of the small intestine?
Duodenun, Jejunum, Ileum
Where does most chemical digestion occur?
The small intestine.
Bolus.
How much saliva is secreted per day?
One liter.
What are the accessory organs in the pharynx?
Tonsils
Name two enzymes that digest protein
Pepsin/peptidases, trypsin.
What is the processed food called after passing through the stomach?
Chyme.
What in the small intestine increase surface area for nutrient absorbtion?
The villus.
What is the purpose of the lower esophogeal sphincter.
To prevent backflow of acidic stomach contents.
The enzymes maltase, sucrase, and lactase, digest disaccharides by changing them into what?
What wave-like muscle contraction moves chewed food down the esophagus to the stomach?
Peristalsis.
DOUBLE POINTS
What hormone signals the stomach to release gastric juices?
Gastrin