CHAPTER 15, THE CARDIOVASCULAR, RESPIRATORY, AND DIGESTIVE SYSTEMS.

THE CARDIOVASCULAR AND LYMPHATIC SYSTEMS.

• Blood circulation wouldn't go on without it's biggest muscle, the heart.
• Blood is made up of plasma, red blood cells, white blood cells, and platelets.
• Lymph circulation is a clear fluid that fills the empty space around the body cells.
• You need to maintain your circulatory health. Some ways of doing that are eating healthy and get regular checkups.
• Cardiovascular system problems can stretch from congenital heart defects to Leukemia. Some Lymphatic system problems are Tonsillitis.

LESSON 2

LESSON 3

• Digestion, absorption, and elimination all occur during digestion.
• Digestion starts with your teeth to break the food down, salivary glands to produce digestive juices, and tongue forms the food.
• Some digestive system problems are indegestion, constipation, heartburn, nausea, diarrhea, and gas.
• Structural problems have a large range of problems from tooth decay to colon cancer.

HOW EXCRETION WORKS

• Lungs, skin, and large intestine. Lungs expel carbon dioxide, when you sweat that is a form of excretion, and wastes are elminated by your intestine.
• The liver and urinary system are apart of this. The liver remkves certain toxins from the blood and the urinary system removes extra waste from blood.
• You can maintain your excretory health by drinking atleast 8 ounces of water eachday.
• Two common problems with this are cystitis (imflammation of the bladder) and urethritis (inflammation of the urethra.)
• Kidney failures can occur and many other kidney disorders.