Chapter 16Chapter 16

Lesson 2Lesson 2

Did You Know?Did You Know?

Most problems of the cardiovascular Most problems of the cardiovascular and lymphatic systems can be and lymphatic systems can be prevented with proper care and prevented with proper care and healthy decisions.healthy decisions.

Health Behaviors and the Health Behaviors and the Cardiovascular and Lymphatic Cardiovascular and Lymphatic

SystemsSystemsA.A. These healthful habits can help reduce These healthful habits can help reduce

many of the risk factors associated with many of the risk factors associated with problems of the cardiovascular and problems of the cardiovascular and lymphatic systems:lymphatic systems:

1. Follow a well-balanced diet that is low in 1. Follow a well-balanced diet that is low in saturated fats, cholesterol, and salt.saturated fats, cholesterol, and salt.2. maintain a healthy weight.2. maintain a healthy weight.3. Participate in regular aerobic exercise for at 3. Participate in regular aerobic exercise for at least 30 minutes three to four times per week.least 30 minutes three to four times per week.4. Avoid the use of tobacco products.4. Avoid the use of tobacco products.5. Avoid illegal drugs.5. Avoid illegal drugs.

B. Blood pressure is an indicator of cardiovascular B. Blood pressure is an indicator of cardiovascular health.health.

Discussion QuestionDiscussion Question

What health behaviors can you What health behaviors can you choose that will reduce problems choose that will reduce problems with high blood pressure?with high blood pressure?

Cardiovascular System Cardiovascular System ProblemsProblems

A.A. Certain heart problems are congenital, or Certain heart problems are congenital, or present at birth.present at birth.

B.B. Cardiovascular disease is a group of Cardiovascular disease is a group of diseases of the cardiovascular system.diseases of the cardiovascular system.

C.C. Heart murmurs are abnormal sounds Heart murmurs are abnormal sounds made as blood flows through the heartmade as blood flows through the heart

D.D. Varicose veins form if valves in the veins Varicose veins form if valves in the veins do not close tightly enough to prevent do not close tightly enough to prevent backflow of blood. Physical activity helps backflow of blood. Physical activity helps prevent varicose veins.prevent varicose veins.

Cardiovascular System Cardiovascular System ProblemsProblems

E. Anemia is a condition in which the E. Anemia is a condition in which the ability of the blood to carry oxygen is ability of the blood to carry oxygen is reduced. reduced.

F. Leukemia is a form of cancer in which F. Leukemia is a form of cancer in which any one of the different types of white any one of the different types of white blood cells is produced excessively blood cells is produced excessively and abnormally.and abnormally.

G. Hemophilia is an inherited disorder in G. Hemophilia is an inherited disorder in which the blood does not clot properly.which the blood does not clot properly.

Lymphatic System ProblemsLymphatic System Problems

A. Immune deficiencies occur when the A. Immune deficiencies occur when the immune system can no longer protect immune system can no longer protect against infection. Some immune against infection. Some immune deficiencies are congenital.deficiencies are congenital.

B. Hodgkin’s disease is a type of cancer that B. Hodgkin’s disease is a type of cancer that affects the lymph tissue.affects the lymph tissue.

C. Tonsillitis is another possible problem C. Tonsillitis is another possible problem with the lymphatic system. Tonsils are part with the lymphatic system. Tonsils are part of the immune system and help reduce the of the immune system and help reduce the number of pathogens entering the body.number of pathogens entering the body.