EXPLORING THE BODY SYSTEM BY SYSTEM: CIRCULATORY SYSTEM: (page 93, 135-140) LEARNING OUTCOME #3: INTERPRET THE HEALTHY FUNCTION OF HUMAN BODY SYSTEMS, AND ILLUSTRATE WAYS THE BODY REACTS TO INTERNAL AND EXTERNAL STIMULI 3a) describe, in general terms, body systems for respiration, circulation, digestion, excretion and sensory awareness 3b) describe in general terms, the role of individual organs and tissues in supporting the healthy functioning of the human body 3c) describe ways in which various types of cells contribute to the healthy functioning of the human body 3d) describe changes in body functions in response to changing conditions FUNCTION: is known as your transportation system. It delivers ______________ absorbed by your digestive system and __________________ in your lungs to your cells and removes __________________ products from the cells. 1. Label the following diagram. Use arrows to show the flow of blood through your body. 2. Your heart is actually 2 _____________. The __________ and ____________ sides of your heart work together to pump blood through your body. The right side of your heart pumps blood to the ___________________ where the blood is enriched with oxygen. The left side of your heart pumps the oxygen rich blood to your _____________. Superior Vena Cava (vein) Inferior Vena Cava (vein) 3. The circulatory system is one complete circuit. It is a closed system where pressure is needed to maintain blood flow. Complete the chart below starting when blood from your body enters your heart. STRUCTURE WHAT HAPPENS SUPERIOR AND -special names for the veins that return de-oxygenated blood to INFERIOR VENA the right atrium (heart) CAVA HEART (right side) The _________ _________________ receives de-oxygenated blood from the body and pumps it to the right ventricle. The __________ ________________ then pumps the de-oxygenated blood to the lungs via the pulmonary artery. LUNGS Blood gets rid of ___________ ___________ (diffusion into the alveoli) and receives _____________ from the lungs (diffusion from the alveoli to the capillaries around the alveoli). Oxygenated blood is then returned to the heart via the pulmonary vein. HEART (left side) The ___________ _________________ receives the oxygenated blood from the lungs and pumps it to the ____________ _______________. The __________ _______________ then pumps this oxygen rich out the _____________ (largest artery) to the body cells. ARTERIES to CAPILLARIES to VEINS Arteries are blood vessels that __________ the heart (usually rich in oxygen) Arteries branch into smaller and smaller vessels until they become ____________________. Here, at the cell level oxygen diffuses _______ of the blood and ______________ _____________ diffuses into the blood. The capillaries then form the de-oxygenated blood vessels called _______________ and carry deoxygenated blood back to the heart. SUPERIOR AND -CIRCUIT STARTS OVER INFERIOR VENA CAVA to the HEART AGAIN 4. Blood vessels are made up of three types of tissues: a. Connective on the _____________________. b. Muscle in the _________________________. c. Epithelial on the _______________________. 5. Arteries have _______________ ____________________ layer that helps push the blood along. 6. Veins are thinner and have _____________ that stop blood from flowing backwards. Your skeletal muscles contracting also aid blood flow back to the heart. 7. Capillaries have two adaptations for exchanging gases and nutrients. a. Made of ________________ tissue only ___ layer thick b. Is very narrow causing blood to flow in ___________ __________. 8. Sketch each type of blood vessel and label it ARTERY CAPILLARY VEIN 9. Diagram out what exchanges take place at the cell level (blood and body cell) 10. Blood is composed of ____________ tissue and consists of: a. _______ blood cells that carry oxygen and carbon dioxide, b. _______blood cells that fight infection, and c. Platelets that _______________ ______________ and plasma (55%), the ___________ part of the blood. 11. This system can be affected by a poor diet which can lead to atherosclerosis. Explain what atherosclerosis is and what it could cause (blockage-heart attack). Make a diagram. 12. What is another name for hypertension or high blood pressure? 13. A stroke has the same cause as a heart attack except the blockage occurs in the ______________________.