Functions of the Digestive System
epiglottis
A flap of tissue that seals off the windpipe and prevents food from entering. Otherwise, you would choke
enzyme
A type of protein that speeds up the rate of a chemical reaction in your body
the small intestine
Absorption of food into the blood stream takes place where?
duodenum
As chyme leaves your stomach, it enters the first part of you small intestine, called what?
produce vitamin K, B
Bacteria in the intestines have positive benefits. Name one
as much as three days
Chyme might stay in the large intestine how long?
speed
Enzymes _________ up the rate of a chemical reaction in your body
changed or used up
Enzymes work without being ___________ or __________
villi
Fingerlike projections in the small intestine that increase surface area and maximize the absorption of nutrients.
saliva
Fluid in the mouth, contains water, electrolytes, mucus and enzymes
the esophagus
Food enters the stomach from where?
1. Ingestion 2. Digestion 3. Absorption 4. Elimination
Food is processed in your body in four stages. Name them.
2 to 4 hours
How long does food stay in the stomach?
it destroys bacteria that are present in food
In addition to aiding in chemical digestion, what other important role does hydrochloric acid have in the stomach?
bile
In the duodenum, a greenish fluid from the liver is added. What is it called?
in the duodenum
Most digestion takes place where?
Chemical Digestion
Occurs when chemical reactions occur that break down large molecules of food into smaller ones
chyme
Partially digested, semiliquid food mixed with digestive enzymes and acids in the stomach. Moves into the small intestine from the stomach.
False
T/F Digestion takes place in the esophagus?
True
T/F Mechanical and chemical digestion takes place in the stomach?
Mechanical Digestion
Takes place when food is chewed, mixed, and churned
gas
The breakdown of intestinal materials by bacteria produces what?
Digestion
The process that breaks down food into so mall molecules so that they can be absorbed and moved into the blood
hydrochloric acid
What acidic solution is found in the stomach to aid in chemical digestion?
1. tongue 2. teeth 3. salivary glands 4. liver 5. gallbladder 6. pancreas
What are the 6 accessory organs associated with the digestive system?
1. mouth 2. esophagus 3. stomach 4. small intestine 5. large intestine 6. rectum 7. anus
What are the 7 major organs of your digestive tract?
1. the digestive track 2. accessory organs
What are the two parts of your digestive system?
1. Mechanical 2. Chemical
What are the two types of digestion?
anus
What controls the release of semisolid wastes from the body in the form of feces?
Pepsin
What enzyme is in your stomach, it helps aid chemical reactions that break down complex proteins
rectum
What is the last section of the large intestine?
to absorb water from the undigested mass of chyme, which maintains homeostasis
What is the main function of the large intestine?
the internal lining of the stomach is covered with mucus
What isn't your stomach digested by the acidic digestive solution?
As soon as food enters your mouth
When does the breakdown of food begin?
the mouth (chewing and saliva)
Where does mechanical and chemical digestion begin?
1. liver 2. gallbladder 3. pancreas
Which accessory organs produce or store enzymes and chemicals that help break down food as it passes through the digestive tract?
Amylase
Which enzyme is produced by glands in near the mouth? This enzyme helps speed up the breakdown of complex carbohydrates, such as starch, into simple carbohydrates -sugar.
Pancreas
Which organ is on the back outside of the stomach and releases several enzymes through a tube into the small intestine?
enzymes
Without ___________, the chemical reactions of your body would not happen. In fact, you would not exist.
peristalsis
waves of muscular contraction that help push food through your digestive system