Body Systems Review Parts 3 and 4 p.1

Name / Date
Science / Class

Body Systems Review Part 3 Digestive System

  1. Parts and function of the digestive system—complete “When Cells Get Together”
  2. Complete the following activities--a story, a table, and a full-scale model.

Anus / Appendix / Epiglottis
Esophagus / Gall bladder / Large intestine
Liver / Mouth / Pancreas
Pharynx / Rectum / Salivary glands
Small intestine / Stomach / Teeth
Tongue

STORY Please use the word bank provided above to complete the story of digestion. All of the words will be used; some of the words will be used more than once. You may consult the Glencoe texts (green Life Science or red Teen Health) or credible online sources such as

  • Human digestive system at (1.48 min)
  • The digestion process at (2.33 min)
  • Interactive digestion at (interactive animation)
  • Human digestive system at
  • Digestive system at

“Our digestive system is a continuous long tube. Special skin cells (epithelial) line the digestive tract. Food enters our digestive system through the ______, where our ______ grind and cut food. The muscular ______mixes the food and pushes it toward the ______ at the back of the mouth. These are all physical processes. At the same time, chemical changes happen to food when liquids from the ______ mix in with the food. The soft palette at the top of your mouth, and the ______ near your throat, block food from going up into your nasal cavity or down into your lungs. Your body then uses involuntary muscular movements, called peristalsis, to move food down the ______ and into a muscular sack called the ______. This organ churns food down into a pasty liquid called “chyme” by using involuntary muscle movement as well as acidic juices. When it is ready, the chyme moves along into ______, where enzymes from the ______(anorgan) and bile from the ______ (an organ) complete the breakdown of food materials. These nutrients are then able to pass through structures on the walls of the ______ to enter the bloodstream and get delivered to the cells of the body. The surface area of this organ is about equal to the size of a football field! Note: the ______ also secretes insulin, a hormone that helps to regulate the amount of sugar in the blood. Problems with insulin production can result in the disease we know as diabetes. The ______ helps with the breakdown of fats by using bile, a material that is stored in the ______. This organ also processes proteins and carbohydrates, and filters out impurities and toxins, like poisons and drugs.

Peristalsis continues to move waste material into the ______, also known as the colon or bowel. The ______ is located where the small intestine meets the large intestine; we do not know what role this organ plays in digestion, and some people have this organ removed. The ______ absorbs water and salt, manufactures vitamins, produces mucous, and forms feces. Most of the “friendly” bacteria that aid in digestion live in this organ. Waste solids move into the ______, where they are known as feces, and can be expelled from the body through the ______, an opening at the end of the digestive tract.”

TABLE We eat and drink many different kinds of things. Go online to learn about the component parts of several common foods, and how the body digests each type of food. On the table below, place an X to indicate component parts of common foods.

Materials We Eat
Food / Nutrients Found in Foods / Other Materials Found in Foods
Carbohydrates / Protein / Fat / Vitamins + Minerals / Water / Roughage
Starch / Sugar
beans
ice cream
fish
sweets
apple

MODEL With your group, create a full-size model of the digestive system with the following parts.

Model Part / Full size
Esophagus
(use a straw) / 25cm long
Stomach
(use a balloon) / 30cm long
Small intestine
(use thin string) / 610cm long
Large intestine
(use thicker string) / 152cm long
Total length of the digestive track / 817cm long

Body Systems Review Part 4 Circulatory and Respiratory Systems

a.Parts and function of the circulatory and respiratory systems—complete “When Cells Get Together” for each system.

b.Review blood graphs and respiration story (previous assignments).

c.Use multimedia to review the processes of circulation and respiration.

"Human Circulatory System."YouTube. YouTube, 15 Dec. 2013. Web. 07 May 2017. (4:52 min)

TEDEducation. "What Do the Lungs Do? - Emma Bryce."YouTube. YouTube, 24 Nov. 2014. Web. 07 May 2017. (3:21 min)