DIGESTIVE SYSTEM

DIGESTION

The process of breaking down food into smaller pieces.

What are the common structures of the DIGESTIVE SYSTEM?

- MOUTH

- ESOPHAGUS

- STOMACH

- SMALL INTESTINE

- LARGE INTESTINE

- ANUS

STOMACH

Digests and breaks down swallowed food into smaller bits by mixing it with hydrochloric acid containing certain digestive enzymes to help break down food even more.

CHYME

The pulpy acidic fluid consisting of gastric juices and partially digested food passing from the stomach to the small intestines.

SMALL INTESTINE

Absorbs food nutrients and molecules through the villi lining the walls.

SMALL INTESTINE SECTIONS

- DUODENUM

- JEJUNUM

- ILIUM

LARGE INTESTINE

Absorbs water, liquids, and other unabsorbed nutrients. It also stores feces and ejects them from the body.

LARGE INTESTINE SECTIONS

- ASCENDING COLON

- TRANSVERSE COLON

- DESCENDING COLON

- RECTUM

- ANUS

ACCESSORY ORGANS

- GALLBLADDER

- LIVER

- PANCREAS

PANCREAS

SECRETES DIGESTIVE JUICES AND CHEMICAL SUBSTANCES CONTAINING ENZYMES, CARRYING THEM TO THE DUODENUM.

What are the names of the ENZYMES produced by the PANCREAS?

- AMYLASE (CARBOHYDRATES)

- LIPASE (FATS)

- TRYPSIN (PROTEINS)

LIST THREE DIFFERENT DIGESTIVE TRACTS:

1) HERBIVOROUS DIGESTIVE TRACT

2) CARNIVOROUS DIGESTIVE TRACT

3) OMNIVOROUS DIGESTIVE TRACT

THREE DIGESTION TYPES

1) HERBIVOROUS

2) CARNIVOROUS

3) OMNIVOROUS

TWO TYPES OF HERBIVOROUS DIGESTION

1) RUMINANT

2) NON-RUMINANT

How many CHAMBERS are there in a COW’S STOMACH?

FOUR CHAMBERS

Name the FOUR SECTIONS that make up the COW’S STOMACH?

1) RUMEN

2) RETICULUM

3) OMASUM

4) ABOMASUM

How do rabbits process food?

RABBITS ARE CECOTROPHIC, MEANING THAT THEY EAT NUTRIENT-RICH FECES PRODUCED BY OTHER RABBITS AND CERTAIN SPECIES OF RODENTS TO IMPROVE THEIR DIGESTION.

THEY HAVE DIGESTIBLE FIBER IN THE CECUM THAT IS FURTHER BROKEN DOWN BY SPECIAL FERMENTING BACTERIA TO MAXIMIZE ABSORPTION.

What is special RABBIT POOP called?

CECOTROPHS

How are BIRDS different?

They have a completely different digestive system compared to other mammals.

E.G.) CROP & GIZZARD