Earthworm Dissection. QUESTION: What is the purpose of studying an dissecting an earthworm? INTRODUCTION: Annelids are segmented worms that make up the phylum annelida. The phylum includes the earthworms and other relatives, for example, leeches and a large number of marine worms also known as plychaetes. There are about 9000 species of annelid known today.
Parasitic worms often referred to as helminths, they are a division of eukaryotic parasites. Helminths are worm like organisms that lived and feed off living hosts, receiving nourishment and protection while disruption their hosts’ nutrient absorption, causing weakness, diseases, and possible death. One example of a parasitic worm is the Ancylostoma duodenale, which belong to the genus Ancylostoma. Ancylostoma duodenale is also known as the hookworm. Hookworm lives in the small intestine of hosts such as humans, cats and dogs, where it is able to mate and mature.
* Smoking can generate cell-damaging free radicals (oxidation stress on hair). * Smokers tend to have thinner hair that also tends to lose colour pigmentation or grey hair earlier than non smokers. * Men who smoke are twice at risk of losing hair than non-smokers. | Eyes | * Smoking can cause cataracts more likely by the age of 80, by putting oxidative stress (inflammation of conjunctiva, comea and uvea) on lens of eye. * Smokers have 22% risk of cataract extraction, causing blind spot directly in line of sight.
In the book it says,“Most parasites live in more than one kind of animal, but they’re all trying to reach their final host, the ultimate vector”(60). Parasites can kill their host but once their host is dead they die along with it in Peeps it says,“One thing about parasites—they’re great at living inside other organisms, but once they hit the outside world, they’re not so tough.”(109) In some ways the parasite situation form the book could be true only some aspects could. The unusual strength, night vision, heightened senses, and an affinity with rats cannot be a realistic benefit form a sexual transmitted parasite. Parasites
Lifestyle choices often can be a cause of ageing as damages to body systems such as high cholesterol diets causing Coronary Heart Disease or being out in the sun a lot causing the wrinkling of skin. Hormonal control Women usually experience a major decrease in the hormone oestrogen following the stage of menopause where a women stops having her periods, meaning she is not able to have any more children. This decrease in oestrogen is associated with osteoporosis. Women are more at risk of having osteoporosis than men because bone strength is influenced by the reduction of osteoporosis. Some people may be more at risk of osteoporosis than others because osteoporosis may be influenced by genetic inheritance.
It adds more particles and things into the lungs making the amount of mucus larger and larger causing the cilia to work harder. However, even after the first drag from a cigarette the cilia begin to slow their movement gradually. Eventually they will become paralyzed and with even more time, will end up deteriorating completely. The smoker no longer has the cilia to remove the mucus so they are required to cough it up. Coughing is often worse in the morning due to mucus buildup throughout the night.
Diverticulitis usually gets worse throughout the first day. It starts out as small pain or diarrhea and slowly turns into vomiting and sharp pains. Many people do not have the discomfort or the symptoms. There are other diseases like inflammatory bowel disease and stomach ulcers are mistaken for Diverticulitis. One main cause of Diverticulitis is the lack of fiber in a person’s diet.
An ischemic stroke is typically caused by excess buildup of plague on the blood vessel walls that narrows blood flow dramatically. A hemorrhagic stroke typically occurs when the blood vessel walls weaken over time, which leads to a bulge or rupture of the vessel. Aneurysm is the most common type of hemorrhagic strokes with a low survival rate. They also kill brain cells, which can never regenerate. The affect of strokes on the body can range between mild dizziness or slight numbness to impaired speech and loss of motor control.
Sometimes the recurrences decrease in time. It is possible that a person becomes aware of the infection after the first outbreak years after the infection is in their system. The virus usually affects the penis, vulva, or the rectum cause by HSV-2. Recurrences may be milder and less frequent than other symptoms. Symptoms of Genital Herpes include bumps, rashes in the genital areas, and recurrent clusters of blisters.
Usually within two to three hours the effects will die down and the user will feel sleepy. There are many ways that marijuana can harm the body, both short term and long term. The effect that marijuana can have on the brain and central nervous system are very serious. Marijuana can decrease the amount of blood pumped into the brain which causes short term memory loss. Smoking marijuana reduces the strength and speed of communications between the mind and body.