Teen Health Course 3

Chapter 16: Your Body Systems

Student Web Activities - Teacher Content

1. The two things teens can do to reduce the risk of fractured bones later in life are eat calcium-rich foods and get plenty of physical activity.



2. The build up and breakdown process of bones is called remodeling..



3. The six nutrients your body needs to build strong bones are calcium, vitamin A, vitamin C, vitamin D, magnesium and zinc.



4. The impact of weight and pull of muscle during exercise stimulates the body to build stronger, denser bones.



5. Habits that many teenagers have that can steal calcium from their bones and weaken their skeletons for life include:

a. Skipping meals
b. Replacing milk with nondairy drinks like soda or fruit-flavored juices
c. Cigarette smoking
d. Poor diets
e. Eating disorders

Below are some additional resources on keeping the skeletal system healthy.

1. The California Dairy Council: http://www.dairycouncilofca.org/
2. National Osteoporosis Foundation: http://www.nof.org/
3. Niams: http://www.niams.nih.gov/hi/topics/osteoporosis/kidbones.htm
4. University of Arizona : http://ag.arizona.edu/maricopa/fcs/bb/teen.html

1. Deep breathing can relieve headaches, backaches, stomachaches, sleeplessness, and stress.



2. The body's automatic reaction to stress is rapid, shallow breathing.



3. Letting your stomach expand as much as possible insures that you breathe in as much air as possible.



4. Pursing your lips allows you to control how fast you exhale and keeps your airways open as long as possible.



5. The natural mood enhancers deep breathing releases into the body are called endorphins.

Below are additional resources that discuss the use of deep breathing as a way to reduce stress and improve health.

1. Mayo Clinic:
   http://www.mayoclinic.com/print/yoga/CM00004/METHOD=print
2. Help Guide:
   http://www.helpguide.org/mental/stress_relief_meditation_yoga_relaxation.htm#breathing
3. CNN:
   http://archives.cnn.com/2002/WORLD/europe/12/11/biz.trav.breathing/
4. iVillage:
   http://health.ivillage.com/mindbody/mbstress/0,,4866,00.html
5. National Women's Health Resource Center :
   http://www.healthywomen.org/take10/january2005/fitnessminute.html