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Chapter Three Unit A Human Body Systems Lesson 1 What are the circulatory & respiratory systems? Vocabulary Words Artery Capillary Circulatory system Heart Respiratory system Vein- Standards Students know how blood circulates through the heart chambers, lungs, and body and how carbon dioxide and oxygen are exchanged in the lungs and tissues Respiratory System: passage for air (pg. 73) 1. Oxygen enters mouth or nose 2. Trachea 3. Bronchial tubes 4. Lungs 5. Alveoli (air sacs) 6. Capillaries (small tubes for blood) 7. Oxygen moves to blood Circulatory System: passage for blood (pg. 74) 1. Blood receives oxygen in lungs 2. Heart 3. Arteries- large tubes carry blood away from heart and around body 4. Capillaries- small tubes for blood 5. Cells 6. Veins- large tubes carry blood back to heart Heart The heart has 4 chambers The top chambers: right & left atrium • receive blood from the body The bottom chambers: right & left ventricle • pump blood to the body Lesson 2 What is the digestive system? Vocabulary Words Digestive system Esophagus Large intestine Small intestine Stomach- Standards Students know the steps of digestion and the roles of the teeth, mouth, esophagus, stomach, small intestine, large intestine, and colon in the function of the digestive system Digestive System: passage for food (pg. 85) 1. 2. 3. 4. 5. Teeth chew food Saliva breaks down food Esophagus Stomach Stomach acid breaks down food & creates nutrients (1-3 hrs) 6. Small intestine (1-6 hrs) 7. Large intestine (12-36 hrs) Foods Easy/Hard to Digest bread fried food Noodles spicy food rice chocolate plain crackers citrus drinks "instant" hot cereal dairy bananas ice cream cereal without milk apple sauce plain potato onion broccoli beans gum Lesson 3 What is the excretory system? Vocabulary Words Excretory system Bladder Kidney- Standards Students know the role of the kidney in removing cellular waste from blood and converting it into urine, which is stored in the bladder Excretory System: passage for waste (pg. 93) 1. Kidneys filter blood & take out waste 2. Urine is created 3. Ureters 4. Bladder 5. Sensors detect size of bladder & signal brain to empty Kidneys pg. 94 Keeping kidneys healthy • Drink a lot of water • Exercise • Eat healthy Unhealthy Kidneys • Need dialysis • Kidney transplant • Humans can live with one kidney Body Systems Respiratory System Pathway for air pg. 73 - Mouth and Nose Trachea Bronchial tubes Lungs Alveoli Capillaries Circulatory System Digestive System Excretory System Pathway for blood Pathway for food Pathway for waste pg. 74 pg. 85 pg. 93 - Lungs Heart Arteries Capillaries Veins - Teeth Esophagus Stomach Small intestine Large intestine Kidneys Ureter Tubes Bladder