REVIEW SHEET HOMEOSTASIS
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1 1. What is Homeostasis? The maintenance of stable/constant internal environment despite changing external environment What is another term for Homeostasis? Dynamic Equilibrium Active Balancing
2 2.What is Thermoregulation? Temperature balance -Too hot: Sweat -Too cold: Shiver 3.How does blood sugar level demonstrate feedback? Message is sent to the Pancreas insulin produced lower sugar level pancreas stops insulin production homeostasis maintained to return something back to its set point
3 4. Give examples of negative feedback in the human body Too hot sweat Too cold shiver Too much sugar insulin Too little sugar glucagon
4 5. How do plants maintain water balance and carry out gas exchange? Through the guard cells and stoma
5 6. Construct a graph demonstration blood sugar level and homeostasis.
6 7. How is homeostasis related to disease? Disease is the failure of homeostasis 8. Describe the 5 factors that cause disease Genetic Pollution Organ malfunction Harmful Lifestyle Disease-non infectious & infections (pathogen)
7 9. What are microorganisms & how do they enter the body? Microscopic organisms Enter the body through an opening Cut Nose Mouth mucus membrane
8 10. What is a pathogen? Disease Causing Microorganism Bacteria Fungus Viruses
9 11. Identify 3 ways in which WBC work 1. Engulf phagocytes - non specific 2. Recognize identify antigens specific B cells 3. Produce antibodies against antigens specific- T cells
10 12. What change in the human body might cause a WBC to increase in number and release antibodies? Invasion of a pathogen causing infection
11 13. Explain the difference between active immunity & passive immunity Active: self made, longer lasting Passive: made by others, shorter lasting
12 14. What is AIDS and how does it effect the immune system? Acquired Immune Deficiency Syndrome Invades the WBC that recognizes & identifies antigens Leaving no defenses against pathogens
13 15. Compare and contrast AIDS & SCIDS AIDS is acquired SCIDS is genetic 16. What is an allergic reaction? inflammatory response to a foreign substance 17. What are histamines? Fluids containing WBC flood into problem area
14 18. What are auto immune disease? Attack normal body tissue Examples: Rheumatoid Arthritis, Lupus 19. What is the danger associated with organ transplant? New organs will be recognized as foreign and attacked
15 20. What is your body s first line of defense? Barriers - Physical (skin) - Chemical (tears and mucus) Other 2 defenses a. Inflammatory b. Immune Response
16 21. Identify 3 ways in which disease can be prevented Wash hands Healthy life style Barriers 22. What is cancer? uncontrolled cell division near by cells are starved of blood and nutrients
17 23. Explain the difference between an benign growth and a malignant growth Benign - causing no damage Malignant growth that has spread through the blood & lymph system
18 24. What are antibodies? WBC The bodies defense again invasion How do they work? Recognize Engulf produce
19 25. Explain the difference between antibodies & antibiotics Antibodies- WBC that engulf Antibiotics- Medical chemicals that kill bacteria
20 26. What are the content of a vaccine? A weaken or a dead portion of the microbe How does it protect the body from disease? Triggers body to recognize & produce WBC What are they important for school children? Prevent spread of disease
21 27. When a person receives a vaccine, where do the antibodies come from? Another organism that made them 28. Explain why the antibodies for chicken pox not work on the measles? The chicken WBC will not recognize the measles virus
22 29. Put in correct order: Cure Treatment Diagnosis Prevention Diagnosis Treatment Cure Prevention 30. What do hormones, antibodies, and enzymes all have in common?
23 31. What is an antigen? TRIGGERS WBC PRODUCTION ANTIBODY GENERATOR 32. What is a parasite? Lives in/on another organism (host) What does it do to it s host USES IT FOR FOOD & SHELTER
24 33. Disease of inheritance. Sickle Cell anemia. Poor circulation, pain, failure to deliver oxygen and nutrients. Can be treated with transfusion 34. Disease of toxic substances. Emphysema. Inability to breathe normal, susceptible to respiratory infection. Stop smoking (don t even start)
25 35. Disease of poor nutrition. Atherosclerosis. Hardening of the arteries, restricting blood flow; Can lead to heart attacks Change in diet low fat/cholesterol 36. Which body system is most affected by the vaccination? Immune system
26 What is the best way to prevent the failure of living environment???
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