Digestive System Jeopardy

10 pts: Where does digestion start?

Mouth

BONUS 10 pts: Name 2 things in the mouth that help break down food

Teeth, tongue, saliva

esophagus

10 pts: What organ takes food from the mouth to the stomach?

Bonus 10 pts: What is the flap called that covers the glottis? Epiglottis

•Esophagus made of smooth muscle

•Contractions called peristalsis move food down throat

Stomach

10 pts: What organ comes after the esophagus in digestion?

Bonus 10 pts: Sometimes acid can go back up the esophagus, which causes this condition… Heart burn, or acid reflux

• Ring of muscle between esophagus and stomach allows food to pass through, called the esophageal sphincter

20 pts: What in the stomach helps digest food?

Stomach acid

Bonus 20 pts: What is the pH of stomach acid?

About pH 1 (Battery acid is pH 0, and Cola is 2.5)

20 pts: Why doesn’t stomach acid eat through the lining of the stomach?

Stomach secretes mucus to protect the lining of the stomach

Bonus 20 pts: What occurs if the mucus of the stomach lining wears away?

Stomach ulcer

20 pts: Besides stomach acid, how else is food digested in the stomach?

Stomach also churns food using muscle contractions

Bonus 20 pts: About how many hours does food spend in the stomach?

About 2 – 4 hours

30 pts: What is the next digestive organ after the stomach?

Small intestine

Pyloric sphincter lets food from stomach to the small intestine

Made of thick ring of muscle

30 pts: What is the main role of the small intestine?

Absorbing nutrients

Villi are small finger-like projections in the small intestine that absorb nutrients

Food spends about 3-5 hrs in the small intestine

30 pts: Bile is the enzyme that is made by this organ, which aids in digestion.

Liver

40 pts: In which organ is bile stored?

Gallbladder

40 pts: Where is the gallbladder located?

Underneath the liver – connects the liver to the small intestine

40 pts: What other organ, which is found near the stomach, secretes enzymes for digestion?

Pancreas

50 pts: What is the main job of the large intestine?

Absorbs water

Between the small and large intestine is a small pouch

In humans – the appendix (function unknown) In other mammals – the cecum (function to break

down cellulose

50 pts: Where does undigested food go after leaving the large intestine?

Rectum Undigested food can stay in the large

intestine for 10 hours to several days

50 pts: Where does food go after leaving the rectum?

Through the anus into the toilet

Next 3 questions are open to all teams – each worth 20 pts

1. This condition occurs when the large intestine doesn’t absorb enough water

Diarrhea2. This condition occurs when too much water

is absorbedConstipation3. Approximately how long in meters is the

digestive tract from beginning to end, for the average adult human? (Closest team wins)

9 meters

Final Jeopardy – make your wager!

Food is processed in 4 phases: ingestion, digestion, absorption, and elimination.

Name one organ that is involved in EACH of these phases

Ingestion – mouth Digestion – stomach Absorption – small or large intestine Elimination – rectum or anus