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Symbiosis in the Human Body

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Veronica Bone

on 1 March 2013

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Transcript of Symbiosis in the Human Body

Symbiosis within the Human Body All the creepy things that live ON us ... What Getting deeper... Parasitism lives when one organism benefits on on another's expense house? in your Symbiosis: Interaction
between two different organisms living in close physical association There are three different types ... Mutualism:
Symbiosis that is beneficial to both organisms involved There are many examples of this, and many are too close for comfort. Calm
down.
I'm just
kidding. I hope. Actually, it's almost as creepy. Dust mites are commonly found in mattresses or pillows of beds where they can reach a constant source of skin scales. Humans spend approximately 8 hours a day in bed and will shed roughly 1g of skin a day while sleeping. This is how they survive. Since they feed off of us, but do not harm us in any way, this is classified as commensalism. An adult female is 0.3 mm long; the adult male is slightly smaller and thinner. They are mainly translucent, but the color can vary slightly, depending on what they feed on. Commensalism:
An association between two organisms in which one benefits and the other is neither helped or harmed. What lives on me? It lives in your eyebrows ... The Demodex By late adulthood, 2/3 of us will have them living in our eyebrows or eyelashes. Although they gain nourishment and shelter, they don't harm us, so it is also classified as commensalism.
When it comes to a follicle, it burrows headfirst, stays there, and eats skin cells.
These creeper crawlers are invisible to the naked eye, so you won't really be able to tell if you have them! D: Escherichia Coli (E. coli) Essential to human body
Crucial micro flora organism that helps to absorb vitamins (K).
Located in the intestines and helps break down food
Classified as mutualism because it gets shelter and nutrients, as well as breaking down food. . Tapeworms Tapeworms are long, flat parasites that live in the intestines of pigs, cows, and humans.
Tapeworms get shelter and food, while humans lose nutrition. That's why it's categorized as parasitism.
A tapeworm gets into its host by laying its eggs in the host’s food source.
the host eats this food, and the eggs develop and grow into tapeworms, which attach themselves to the intestines of their host.
A tapeworm has been known to live in a human for ten years without being detected! Ticks!
Ticks are among the most efficient carriers of disease because they attach firmly when sucking blood, feed slowly and may go unnoticed for a considerable time while feeding. Ticks take several days to complete feeding. The tick may give the host a disease, which could weaken or kill it.

Ticks wait for host animals from the tips of grasses and shrubs (not from trees). When brushed by a moving animal or person, they quickly let go of the vegetation and climb onto the host. Ticks can only crawl; they cannot fly or jump. Ticks found on the scalp have usually crawled there from lower parts of the body. Some species of ticks will crawl several feet toward a host.

Ticks have four life stages: egg, six-legged larva, eight-legged nymph and adult. Head Lice on people's heads and Head lice are feed on their blood. An adult is about the size of a sesame seed. The lice get a food source and can reproduce, so the eggs also survive off of the host and the lice, but the parasite can sometimes transmit diseases to the host. insects that live
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