Welcome Mr. Hickey’s Class!

Digestive SystemMr. Brainard7th Health

Unit OutlineCrossword Puzzle – 10 ptsQuiz – 20 ptsNotebook Check – 10 ptsReview Sheet – 35 ptsExam – 50 ptsTotal of 125 points!You will find all materials on my

website!If absent, you need to see me to make

up work!

Plate It! Intro Activity

Digestive System Learning GoalsUnderstand the structure and

function of the digestive system.Identify problems and diseases

associated with the digestive system.

Identify techniques that keep the digestive system healthy.

Lets get a quick visual of the system and how it works!http://

www.youtube.com/watch?v=Z7xKYNz9AS0

3 Main Functionsa. Digestion – breakdown of

foods within stomach and intestines for use by body’s cells

b. Absorption – passage of digested food from digestive tract into blood

c. Elimination – body’s expulsion of undigested food or body wastes.

The Digestive Process4 sections

◦1. Mouth◦2. Throat◦3. Stomach◦4. Intestines

The Digestive Process - Moutha. Teeth break food you eat

into smaller pieces b. Mastication – the process of

chewingc. Saliva is produced by

salivary glands. Saliva contains an enzyme that breaks down food in the mouth – Amylase.

The Digestive Process - Mouthd. Tongue – shapes and

prepares food for swallowing Make sure to brush tongue to avoid bad

breath!!!

The Digestive Process – The Throata. The uvula – small flap of

tissue at the back of the throat that prevents food from going to the nasal passages

b. The epiglottis – flap of tissue which covers the throat, preventing food from entering your airways.

The Digestive Process – The Throatc. When food is swallowed, it

enters the esophagus – a 10 inch tube that connects the throat to the stomach

d. Peristalsis – series of involuntary muscle contractions that move food through the digestive system

e. (similar to squeezing a tube of toothpaste from the bottom up)

Peristalsishttp://

www.youtube.com/watch?v=YJ34Qx6hzJk

The Digestive Process - Stomacha. Stomach - hollow sac-like

organ connected to the esophagus

b. Functions:- digests food with gastric

juices- moves food into small

intestinec. Converts food into chyme - a

creamy mixture of food and gastric juices.

The Digestive Process - Intestines

a. from the stomach, food moves into small intestines◦20-23 feet long, 1 inch in diameter◦This is where most of the nutrients

from food are absorbed into the body!!!

b. inner lining contains villi – tiny fingerlike projections that help absorb nutrients

The Digestive Process - Intestinesc. any unabsorbed material goes

from the small intestine into the large intestine

d. here water is absorbed; helps to eliminate waste

e. undigested food passes through the large intestine; or the colon

f. exited through the anus

Helpers of the Digestive System

1. It is important to note food DOES NOT pass through these organs!

2. Pancreasa. produces enzymes to help break down foodb. produces insulin to help regulate blood sugar levels

Helpers of the Digestive System3. Liver

a. produces bileb. Bile – a green fluid that

helps breakdown fats

4. Gallbladder a. small pouch which stores

the bile

Crossword puzzle – 10 ptsIdentify parts of the digestive

system

Functional Problem:

What is it? Causes?

Symptoms?

Heartburn

Gas

Nausea

HEARTBURN

GAS

NAUSEA

GASTRITIS

LACTOSE INTOLERANCE

PEPTIC ULCER

HEMORRHOIDS

Digestive System Care1. Eat foods high in fiber!

◦Fiber helps food and waste pass through the digestive tract

◦Reduces risk of colon cancer◦Beans, Prunes, Pears, and Leafy

Green Vegetables are good sources

Digestive System Care2. Drink plenty of water

◦8 glasses a day!◦Helps keep things moving regularly

Digestive System Care3. Eat slowly and don’t hurry

through your meals◦Eating too fast can cause gas or

indigestion

Extra Credit! EXTRA CREDIT – DIGESTIVE SYSTEM 1. EAT A MEAL/SNACK WITH HIGH FIBER AND LOW IN

FAT TO EARN CREDIT FOR THIS, YOU MUST BRING IN THE

FOOD LABEL OF THE SNACK YOU ATE AND ATTACH IT TO THE EXTRA CREDIT SHEET

2. DRINK 8 GLASSES OF WATER IN A DAY THIS CAN ONLY BE COMPLETED ON A WEEKEND SO YOU

CAN HAVE YOUR PARENTS WITNESS THIS THROUGHOUT THE DAY. HAVE THEM SIGN EXTRA CREDIT SHEET!

3. HAVE A 30 MINUTE SIT DOWN DINNER WITH YOUR FAMILY! EAT SLOWLY, RELAX, AND ENJOY YOUR MEAL!

HAVE YOUR PARENT FILL OUT AN EXTRA CREDIT WITNESS SLIP AFTER YOUR DINNER!