Van Gogh's Chair. Brain tumor. A brain tumor or brain tumour, is an intracranial solid neoplasm, a tumor (defined as an abnormal growth of cells) within the brain or the central spinal canal. Some tumors are brain cancers. Brain tumors include all tumors inside the human skull (cranium) or in the central spinal canal. They are created by an abnormal and uncontrolled cell division, usually in the brain itself, but also in lymphatic tissue, in blood vessels, in the cranial nerves, in the brain envelopes (meninges), skull, pituitary gland, or pineal gland. Within the brain itself, the involved cells may be neurons or glial cells (which include astrocytes, oligodendrocytes, and ependymal cells).
Any brain tumor is inherently serious and life-threatening because of its invasive and infiltrative character in the limited space of the intracranial cavity. Signs and symptoms[edit] Visibility of signs and symptoms of brain tumors mainly depends on two factors: the tumor size (volume) and tumor location. Cause[edit] Types[edit] Parasitism. Unlike predators, parasites typically do not kill their host, are generally much smaller than their host, and will often live in or on their host for an extended period. Both are special cases of consumer-resource interactions.[4] Parasites show a high degree of specialization, and reproduce at a faster rate than their hosts. Classic examples of parasitism include interactions between vertebrate hosts and tapeworms, flukes, the Plasmodium species, and fleas.
Parasitism differs from the parasitoid relationship in that parasitoids generally kill their hosts.[5][6][7] Etymology[edit] Types[edit] Parasites are classified based on their interactions with their hosts and on their life cycles. An obligate parasite is totally dependent on the host to complete its life cycle, while a facultative parasite is not. Parasites that live on the outside of the host, either on the skin or the outgrowths of the skin, are called ectoparasites (e.g. lice, fleas, and some mites).[16] Host defenses[edit] Parasite - Schistosoma mansoni. Schistosomes are atypical trematodes in that the adult stages have two sexes (dioecious) and are located in blood vessels of the definitive host. Most other trematodes are hermaphroditic and are found in the intestinal tract or in organs, such as the liver. The lifecycle of schistosomes includes two hosts: a definitive host (i.e. human) where the parasite undergoes sexual reproduction, and a single intermediate snail host where there are a number of asexual reproductive stages.
S. mansoni is named after Sir Patrick Manson, who first identified it in Formosa (now Taiwan).[1][2] Morphology of adult schistosomes[edit] Schistosomes, unlike other trematodes, are long and slim worms. The male S. mansoni is approximately 1 cm long (0.6–1.1 cm) [3] and is 0.1 cm wide. It is white, and it has a funnel-shaped oral sucker at its anterior end followed by a second pediculated sucker. The female has a cylindrical body, longer and thinner than the male's (1.2 to 1.6 cm long by 0.016 cm wide). Tegument. File:Oligodendroglioma1 high mag.jpg.
Droog Furniture. Mushrooms Ate My Furniture: Biodegradable Bench in Bloom. Designer Shinwei Rhoda Yen is turning furniture inside out with her ‘mushrooms ate my furniture’ chair. A contemporary addition to any garden, the seat of natural wood provides an excellent respite to enjoy your surroundings or take a break from your green thumb, while its underside provides the perfect habitat to grow mushrooms.
Left exposed to the elements, mushrooms will grow and live within the chair for years, feeding off of the nutrients of the wood. As with all things in nature, the mushroom furniture will eventually degrade, giving way to the life of its inhabitants. We’re always excited to see approaches to industrial design that inspire dialogue about product lifecycles. Via DesignBoom. Top 5 Pieces of Living, Growing Furniture. In the world of green furnishings there are always a few literalists out there looking to push the envelope and create something truly “green”.
Growing and thriving with CO2 neutralizing chlorophyll, Inhabitat’s Top 5 Living Furnishings presents a range of items from the practical to the prototypical. Some are bound by man-made restraints while others grow directly from the soil–in any form or fashion, these designs are truly alive! 5. Michel Bussien’s Growing Chair Accompanied by a Nature Manifesto, Swiss designer Michel Bussien‘s Growing Chair acts as a statement and display piece. A reconvergence of man and nature formed the inspiration for the chair. 4. Nguyen la Chanh‘s ingenious mossy bath mat provides a lush surface for stepping out of the tub, all the while making use of your post-scrub drips. 3. The Pooktre chair is an amazing example of natural living design. 2. Recommended for outdoor use, Shinwei Rhoda Yen’s mushroom stool has a dark underbelly embedded with spores. 1.