CHAPTER 15

LESSON 1: THE CARDIOVASCULAR SYSTEM

• Your heart helps circulate gases, nutrients, and waste.
• The heart contains the atria, ventricles, and septum.
• Blood: white and red cells, platelets, and plasma.
• Veins, arteries, and capillaries move blood around.
• Disordes: murmurs, anemia, hemophilia, leukemia.

LESSON 1: THE LYMPHATIC SYSTEM

• Lymph is a clear fluid that fills body space.
• Lymph nodes are small organs in the lymph stream.
• Behaviors: eat well, exercise, and get checkups.
• Problems: tonsillitis, immune deficiency, and Hodgkins disease.
• Lymph nodes swell when a disease or illness is present.

LESSON 2: THE RESPIRATORY SYSTEM

• Internal Respiration: oxygen from blood to cells.
• External Respiration: oxygen from lungs to blood.
• Throat to lungs: pharynx, trachea, bronchi, alveoli.
• Diaphragm: muscles that separates chest from abdomen.
• Problem: sinusitis, bronchitis, asthma, pneumonia, tuberculosis.

LESSON 3: THE DIGESTIVE SYSTEM

• Process: digestion, absorption, elimination.
• Eating Organs: teeth, salivary glands, tongue.
• Stomach Tasks: mixing, storing, and moving food.
• Digestive Parts: uvula, small/ large intestine, villi, bile.
• Problems: indigestion, constipation, heartburn, gas, nausea.

LESSON 4: THE EXCRETORY SYSTEM

• Organs: lungs, skin, large intestine, liver, urinary system.
• The kidneys filter the nutrients and eliminate waste.
• Excretory Problems: Cytisis & urethritis
• Kidney Problems: nephritis, stones, uremia, and failure.
• Ureter/urethra tubes: kidneys to bladder, bladder to outside.

This chapter was over the functions of the body. The three main systems are the cardiovascular, respiratory, and the digestive systems.