today - mrs. ashley · 2019. 8. 2. · 14.digestive system.notebook february 24, 2015 the digestive...
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14.Digestive System.notebook February 24, 2015
TODAY:
1. Quiz2. Lesson: The
DigestiveSystem
3. Game4. Homework
14.Digestive System.notebook February 24, 2015
Circulatory System Quiz /5
1. The circulatory system consists of three components. One is blood. What are the other two? (list them)
2. The circulatory systema) moves oxygen to the body tissues.b) moves nutrients to the body tissues.c) removes waste from the body tissues.d) none of the above.e) all of the above.
3. There are three types of blood vessels. One are veins. What are the names of the other two? (list them)
14.Digestive System.notebook February 24, 2015
Circulatory System Quiz ANSWERS /5
1. The circulatory system consists of three components. One is blood. What are the other two? (list them)-Blood vessels-heart
2. The circulatory systema) moves oxygen to the body tissues.b) moves nutrients to the body tissues.c) removes waste from the body tissues.d) none of the above.e) all of the above.
3. There are three types of blood vessels. One are veins. What are the names of the other two? (list them)-arteries-capillaries
14.Digestive System.notebook February 24, 2015
The digestive system takes in and digests food, then eliminates the remaining waste. It provides nutrients which the circulatory system delivers to body cells.
The digestive tract is the long, tubular portion of the of the digestive system that includes:• mouth• esophagus• stomach• small intestine• large intestine• anus
14.Digestive System.notebook February 24, 2015
THE DIGESTIVE TRACT
MOUTH teeth & tongue break food into smaller pieces (mechanical)
water & chemicals in saliva softens food (chemical digestion)
ESOPHAGUS peristalsis (muscular contractions) moves the food down the esophagus to the stomach
STOMACH chemicals & acids break down food muscular contractions assist is mixing of chemicals and food breakdown
INTESTINE moves food by peristalsismost breakdown and absorption of nutrients occur in the small intestinewater is removed from remaining solid matter in the large intestine, forming feces, which leave the body through the anus.
14.Digestive System.notebook February 24, 2015
http://www.youtube.com/watch?v=s06XzaKqELk
14.Digestive System.notebook February 24, 2015
ACCESSORY ORGANS:
The following organs help in the digestion of food in our bodies:
LIVER makes digestive chemicalsproduces bile, which helps break down fats
PANCREAS makes digestive chemicals(also produces insulin which helps the body convert glucose/simple sugar into energy)
GALL BLADDER stores chemicals & bile from the liver until they're ready to be used in the digestive tract
14.Digestive System.notebook February 24, 2015
Accessory Organs
14.Digestive System.notebook February 24, 2015
FOOD ADDITIVES
Food additives are substances added to food during processing.
The are used in foods to improve• colour• flavour• texture• shelf life (freshness)
Many can be harmful to the body.
14.Digestive System.notebook February 24, 2015
https://www.youtube.com/watch?v=9libgB9cu14
14.Digestive System.notebook February 24, 2015
SENSITIVITIES
Sensitivities are unpleasant but usually not dangerous. People may be sensitive to lactose (milk sugar), fructose (fruit sugar), gluten, etc. The digestive systems of people with these sensitivities cannot process the food. Symptoms may include irritatibility in the bowels, headaches, nausea, and a general ill feeling.
14.Digestive System.notebook February 24, 2015
ALLERGIES
Allergies can be very dangerous because they cause the body to release harmful chemicals. The symptoms can include all those of food sensitivities plus:
• hives• rashes &/or• swelling
Reactions can be fatal if the passageways of the mouth and throat swell.
Some common food allergies are peanuts, tree nuts, and shellfish.
http://www.brainpop.com/health/diseasesinjuriesandconditions/allergies/
14.Digestive System.notebook February 24, 2015
Homework:Check Your Learning #1,2,4,5,6 (pg. 99)