Human Disease And Their Control

1432 words - 6 pages

Intro Sample...


Biology (B3A) Assignment Human Disease and Their Control follow up questions 1a) When people refer to pathogens, they are talking about bacteria that cause disease. 1b)The toxins actually excreted by the pathogens are the main cause of diseases although thetoxins are only by-products of the pathogen's metabolism. 2a)In most cases, the toxins excreted by the pathogens find there way into the circulatory system. Thus, sometimes, the infection is caused somewhere else from where the toxins were excreted. An example of this would be Rheumatic fever. The toxins that cause this disease is excreted by the pathogen as a by-product of metabolism. Usually, the pathogens that cause rheumatic fever is located in the throat. As the toxins enter... View More »

Body Sample...


An example of how someone would acwuire tetanus from a wound would be like this: The construction worker moves around a lot and works very hard. Down on the floor is a tetanus infected nail. As the worker is too busy caring for his job, he accidently steps on the nail and gives the tetanus bacteria a chance to get into the body. The tetanus would be succesful from coming from the nail and going to the host. As the wound would close very quickly, this provides an oxygen free atmosphere in which the tetanus bacteria could start to get active. 6a) Immune carriers can be classified as those who have recovered from a certain disease and is immune to it, but still carries the pathogens. The immune carriers show no indecation of a disease with no symptoms, but this carrier can still trnasmit these pathogens to others. 6b) One major disease carrier is the Anthropod. They pick up the pathogens in their food, where they walk and other places. As they carry the disease, they move to other places either for food or shelter purposes. When they bite or sting other organisms, the disease is trnasmitted through the anthropod and infects a new host. 7) The skin is the main protector from pathogens. The first line of defense is the structure of the skin itself. It is almost impossible for pathogens to pass the skin layer. Those who do would go through the pores in our skin. The second line of defense would try to stop those who try to enter the pores. The skin sweats which contains salt. These salts kill of most of the pathogens that enter the pores. Finally, if the pathogens are still ...

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