Digestive, Circulatory, and Respiratory Systems

[Pages:36]Teacher Workbooks

Science and Nature Series

Digestive, Circulatory, and Respiratory Systems, Vol. 1

? Copyright 2004 Teachnology Publishing Company A Division of Teachnology, Inc. For additional information, visit us at

Table of Contents

Digestive System

Class Notes-Digestion in Humans Digestive System Vocabulary Digestive System Cryptogram Digestion Graphic Organizer Digestive Word Search Digestive System Crossword Digestive System Quiz Digestive System Travel Brochure Project Digestive System Square Puzzle

Circulatory System

Class Notes-Circulatory System Circulatory System Vocabulary Circulatory System Cryptogram Circulatory Graphic Organizer Circulatory Word Search Circulatory System Crossword Circulatory System Quiz Circulatory System Matching Quiz The Cardiac 100 Project

Human Respiratory System:

Class Notes-Human Respiration Respiratory System Vocabulary Respiratory System Cryptogram Respiratory Word Search Respiratory System Crossword The Oxygen Treasure Map Project Respiratory Matching Quiz The Diaphragm in Action!

Answers

1-2 3 4 5 6 7 8 9

10

11-13 14 15 16 17 18 19 20 21

22 23 24 25 26 27 28 29

30

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Date ____________________________

Digestion in Humans

Digestion begins in the mouth. Teeth break down food mechanically. Amylase is an enzyme found in the mouth that breaks down starch.

The epiglottis covers the trachea (windpipe) allowing food to freely flow to the esophagus followed by the stomach.

Food is pushed through the digestive canal by tiny contracting smooth muscle tissue. This process is called peristalsis.

The Stomach

Food sits in the stomach for two hours. During this time, food is broken down by gastric juices secreted by the stomach wall. Gastric juice is composed of hydrochloric acid (HCl) and the enzyme pepsin. Pepsin breaks down proteins into shorter polypeptide chains.

The Small Intestine

The interior surface of the small intestine contains a number of finger-like projections called villi. Villi increase the surface area for absorbing broken down food products. The small intestine absorbs food, minerals, and a small amount of water.

Pancreas

The pancreas produces enzymes that directly or indirectly breakdown food. The pancreas is also the organ in charge of making insulin. Insulin is a hormone that regulates the amount sugar that enters the blood.

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Liver, Gallbladder, and Large Intestine

The liver produces bile. Bile is a liquid that digests large fat particles. Bile is stored in gall bladder. The gall bladder is a small sac at the base of the liver. During the digestive process, the gall bladder releases bile into the small intestine to break down fat particles. The large intestine is where the last bit of digestion takes place. Food resides are stored and a large amount of water is reabsorbed into the body in the large intestine.

Digestive disorders:

Appendicitis Constipation Diarrhea

Gallstones

Ulcers

An inflammation of the appendix. Caused due to lack of water in the intestines. Creates a condition that makes it difficult to eliminate feces. Caused due to the presence of additional water in the intestines. The feces can become very watery. Prolonged diarrhea can cause dehydration and require medical attention quickly. Small cholesterol deposits that form in the gallbladder. When gallstones can be secreted into the bile duct. When this happens, they block the flow of bile causing severe pain. Small pores or openings in the lining of the stomach. Caused due to the presence of excessive acid or bacteria in the stomach. Ulcers are painful and cause internal bleeding.

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Name __________________________________

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Amylase

Digestive System Definitions

Epiglottis

Peristalsis

Gastric Juices

Pepsin

Villi

Bile

Appendicitis

Constipation Diarrhea Gallstones Ulcers

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Digestive Cryptogram

Riddle: How many pounds of food does the average human eat in a year?

driheaar

livil

_ _ _ _ _ _ _ _

7 9 9 4 2 7

eilvr

_ _ _ _ _

aomshtc

_ _ _ _ _

2 9

lieb

_ _ _ _ _ _ _

3 5

7

4

cerlus

pspein

_ _ _ _

2

_ _ _ _ _ _

2 9 6

ioasitponcnt

_ _ _ _ _ _

2

6

1

peisdtpinaci

_ _ _ _ _ _ _ _ _ _ _ _

5 1 6 3

7 3

5 1

olsstgeanl

_ _ _ _ _ _ _ _ _ _ _ _

2 1 8

3

6

_ _ _ _ _ _ _ _ _ _

7

6 3 5 1 2 6

O_ _

1 2

ANSWER:

u _ _ _

____ ___

3 4 5

6 7 1 8

5 1 2

u _

_ _ _ _ _

4

1 8 9 2 8

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Name __________________________________

Date ____________________________

Digestion Graphic Organizer

1.

4.

3.

2. 3.

5.

6.

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