DIGESTIVE SYSTEM AND

EXCRETORY SYSTEM NOTES

THE DIGESTIVE SYSTEM The Digestive System

What does the Digestive System do? Your Digestive system digests food to use as energy for

your body There are seven main organs that make up

the digestive system areThe Oral CavityThe EsophagusThe Stomach

PARTS OF THE DIGESTIVE SYSTEM CONTINUED

The Small IntestineThe Large Intestine

—also called the colon—The RectumThe Anus

Inside mouth, stomach, and smallintestine there is a lining called themucosa this lining produces juiceswhich help break down food

WHY IS THE DIGESTIVE SYSTEM IMPORTANT? Food in not the form of energy the body

can use These foods must be changed into a

form of energy that can be used by the body

This converted energy is then absorbed by the blood and carried through out the body

DESCRIPTION OF EACH ORGAN The Oral Cavity

Also known as the mouth The Oral Cavity is were the food is chewed Saliva is secreted from the mouth to help break

down the food The Esophagus

A Muscular tube in the throat to the stomach The Stomach

Stores and digests food The Small Intestine

Absorbs food as nutrients

DESCRIPTION OF EACH ORGAN Large Intestine

Stores food and wastes and prepares the food to be egested

RectumStores solid feces

Anus Feces pass through this part and gets

egested out of the body

POSSIBLE INJURIES TO SYSTEM Eating improper foods Eating too much (Bulimic) Eating too little (Anorexic) Eating too fast or too much Ripping your stomach slightly

THINGS THAT CAN HELP THE SYSTEM Eating healthy foods, such as fiber

Do not eat too much meat products Lots of water Chew food thoroughly Eat foods that have enzymes that can

help your bodyApple Vinegar

EXCRETORY SYSTEM

The function of the ExcretorySystem is ridding the body of waste.

EXCRETORY SYSTEMTHE REMOVAL OF SOMETHING IS EXCRETION.

The main organs of the excretory system are the bladder, kidneys, lungs, liver and skin.

The excretory system is like the sewage system because the excretory system gets rid of waste that the body does not need. The body also gets rid of natural gasses which can be fatal if not released from the body.

KIDNEYS One of the main jobs of the kidneys is to

filter the waste out of the blood. The kidneys filter that blood as many as

400 times a day! More than 1 million tiny filters inside the kidneys (nephrons) remove the waste.

THE URINARY SYSTEM the kidneys: filters that take the waste

out of the blood and make urine the ureters: tubes that carry the urine to

the bladder the bladder: a bag that collects the

urine the urethra: a tube that carries the urine

out of the body

LIVER The liver acts as a filter for the blood. It cleans

out toxic waste, poisons, and acid in the blood.

SKIN The skin plays a major

role in excretion. It helps the body get rid of excess water, salts, and waste such as urea. The urea is a nitrogen waste that is filtered out of the blood

LUNGS

our lungs also undergo excretion by removing carbon dioxide from the body