DIGESTIVE SYSTEMDIGESTIVE SYSTEM

WHAT DO YOU KNOW ABOUT IT?

How long is it?

What is the purpose of the D.S.?

How long does it take to digest your food?

MouthMouth Is Mechanical digestion

Teeth – Cuts or Grinds the food

Helps you to swallow

Saliva - water, breaks down the food through

ENZYMES – break down starches into glucose

tonguetongue1. Balls food to the back of the mouth2. Helps you swallow3. taste

pharynpharynxx

Opening to the throat

EsophagusEsophagus12 inches longMuscles push food down..Like a Snake

EPIGLOTTIS flap that blocks food and water from going into the lungs.

StomachStomachIs Chemical Digestion

Lined in MUCUS (Protects From ACID)

Growling is Empty – Stomach Muscles are Contracting

GASTRIC JUICES – 1.HYDROCHLORIC ACID: Protects you from bacteria2. ENZYMES:Break down proteins and carbs into something …called

BREAKS THE FOOD INTO CHYME CHYME GOES TO THE SMALL INTESTINE

MAIN FUNCTION OF THE STOMACH… BREAK THE FOOD

DOWN…LIKE A FOOD PROCESSOR

SMALL SMALL INTESTINEINTESTINE

18 – 23 FEET LONG1 inch in diameter

Function: 1 Chemical Digestion 2 Absorption of Nutrients are completed

Villi = Tiny fingers contains tiny blood vessels(capillaries) absorb nutrients into the blood stream

Large Large intestineintestine5 feet long

2.5 inches in diameter

Fiber and other materials that are not broken down go here and absorbed

Water absorbed into intestinal wall

Chyme …becomes FECES

RectuRectumm

anusanusFinal phase of the digestive system.

Feces comes out of the rectum

KidneysKidneysThe filter system of the body.Kidneys filter waste out of the blood and most liquid is re-absorbed into the blood stream.

1% is not useful and goes to the bladder as urine.

LIVERLIVERIt acts as a warehouse where the blood takes all the nutrients.

Weights 3 ½ pounds

Produces BILE = breaks down fat(remember fat does not dissolve in blood or water)

BILE BILE Made in the LiverMade in the Liver

1. Sent to the Gallbladder

2. To the small Intestine and breaks down fat.

3. Then takes FAT to the walls of the Sm. Int. and absorbed into the blood stream

Pancreas

Makes insulin – and helps regulate sugar levels

Makes Enzymes that react to the chyme

GallbladderStores Bile and sends it to the small intestine

(acts as a warehouse)

Tips to take care Tips to take care of D.S.of D.S.

1. Chew slowly2. Brush and Floss3. Exercise

4. Nutritious food…fiber foods