Digestive and Circulatory Systems Review Identify the 6 class of nutrients. Carbohydrates Proteins Vitamins Lipids Water Minerals Explain what a food label tells you. The nutritional facts found in processed foods. 1. Identify the following information for the food to the left. a. Serving size 2 crackers b. Total carbohydrates 10g c. Calories 60 d. Protein 2g 2. How many calories would you consume if you ate 2 servings of these crackers? 120 calories Identify each structure labeled in the diagram. oral cavity gall bladder large intestine stomach pancreas small intestine rectum 1. Where does protein digestion begin? In the stomach 2. What is the function of F? Absorb water 3. Where are nutrients absorbed into the blood? In the small intestine 4. What does C produce? Where does it go? Pancreatic juice Goes to the small intestine 5. What is the function of G? store bile 6. Chemical digestion is completed in this structure. small intestine 7. What type of digestion occurs in A? mechanical and chemical 1.What is the name of this process? What is its function? •peristalsis •To push food through the digestive tract 1.Where in the digestive tract does this process occur? esophagus, stomach, small intestine, large intestine 1. What is structure F? What is the function of this substance? •to produce bile •liver 2. Identify structure B. What kind of digestion occurs here? •stomach •chemical digestion 3. What is the function of structure A? The esophagus pushes food down into the stomach using peristalsis. 1. Through which of these structures does food pass? Esophagus (A) Small intestine (D) Stomach (B) 1. Which organs are not part of the gastrovascular tract? How do they aid in digestion? •Liver (F) – produces bile that goes to the SI •Gall bladder (E) – stores bile •Pancreas (C) – releases pancreatic juice into SI Describe the role of the small intestine in digestion. •Where most chemical digestion occurs •Where chemical digestion is completed •Lined with VILLI which absorb nutrients into the blood Identify the labeled organs. A - Oral cavity B - Esophagus C – Stomach D – Pancreas E - Large intestine F - Appendix G - Small intestine H – Gall bladder I - Liver 1. Through what organs does food pass? (in order) Oral cavity Esophagus Stomach Small intestine Large intestine Rectum Anus 2. In which structures does peristalsis occur? Esophagus, stomach, small intestine, large intestine, rectum 1. Where excess water reabsorbed? Large intestine 2. What occurs in structure G? Villi absorb nutrients into blood 3. What does I produce? Where does it go? Bile – into small intestine 4. This is where chemical digestion begins. Oral cavity 5. This is where chemical digestion ends. Small intestine Identify organs where there is no digestion occurring. Esophagus Liver Salivary glands Pancreas Glass bladder Which part of the human blood: 1. is the most numerous? rbc’s 2. contains a nucleus? wbc’s 3. is biconcave? rbc’s 4. is produced in the bone marrow? rbc’s, wbc’s, platelets 5. consists mainly of water? plasma white blood cell Y red blood cell Identify structures X, Y, and Z. Z platelet Which activity is not a function of white blood cells in response to an invasion of the body by bacteria? 1. engulfing these bacteria 2. producing antibodies to act against this type of bacteria 3. preparing for future invasions of this type of bacteria 4. speeding transmissions of nerve impulses to detect these bacteria Which part of the human blood transports hormones and nutrients? 1. plasma 2. platelets 3. red blood cells 4. white blood cells The breaking apart of platelets in the blood helps in the 1. synthesis of hemoglobin 2. formation of a clot 3. release of antibodies 4. deamination of amino acids Cardiovascular diseases interfere most directly with the normal functioning of system? Explain the difference between arteries and veins. •Arteries carry blood AWAY from heart. Veins carry blood to the heart. •Arteries are larger, more muscular and elastic than veins. •Arteries carry blood under higher pressure than veins. •Veins have valves to prevent the backflow of blood. Arteries do not have valves. Explain what occurs in capillaries and why. The exchange or diffusion of substances into or out of the capillary. Capillaries are extremely small and have a VERY thin lining that allows for diffusion to occur. The diagram represents a capillary near some cells. 1. Identify the substances diffusing out of the capillary and into cells. 2. Identify the substances diffusing out of cells into the capillary. Blood normally flows from the capillaries directly into 1.small arteries 2.small veins 3. lymph vessels 4. heart atria The movement of blood from the legs toward the heart is hindered by gravity. The effect of gravity is counteracted by a. smooth muscle in the capillaries b. cilia lining the blood vessels c. valves in the veins d. lymph nodes near major vessels Which statement best describes arteries? a. They have thick walls and transport blood away from the heart. b. They have thick walls and transport blood toward the heart. c. They have thin walls and transport blood away from the heart. d. They have thin walls and transport blood toward the heart. 1. Identify the upper chambers of the heart. Right and left atria 2. Identify the lower chambers of the heart. Right and left ventricles 3. Identify the structures that separate the upper and lower chambers. valves 4. Identify the wall that separates the right and left side of the heart. septum Identify structures B, D, E, F and H. aorta left atrium right atrium left ventricle right ventricle When blood passes through the heart from the left atrium (D) to the left ventricle (E), it must first pass through a valve Identify the part of the heart being described. 1. Chamber that receives oxygenated blood. Left atrium 2. Wall that separates the right and left side of the heart. Septum 3. Large artery that carries oxygenated blood to the rest of the body. Aorta 4. Chamber that pumps out deoxygenated blood. Right ventricle 5. Chamber that receives deoxygenated blood. Right atrium 6. Prevents the backflow of blood between atria and ventricles. Valves 7. Chamber that pumps out oxygenated blood. Left ventricle For blood to pass through the heart from the left atrium to the left ventricle, it must first pass through a. an artery b. a valve c. a vein d. a capillary