Could anyone direct me to information on the tarantula's digestive system?
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Check:\nhttp://www.earthlife.net/chelicerata/s-anatomy.html\nhttp://www.greensmiths.com/spiders.htm
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http://www.reptileallsorts.com/spcsheet.htm\nthis site is awesome
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This website is pretty good.\n\nhttp://biog-101-104.bio.cornell.edu/Biog101_104/tutorials/frog.html#general
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Try these two links:\nhttp://www.scienceaid.co.uk/endocrinesystem.html\nhttp://www.scienceaid.co.uk/nervoussystem.html
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try this search page\nhttp://uk.search.yahoo.com/search?p=Leishmania+Protist&prssweb=Search&ei=UTF-8&fr=fp-tab-web-t-1&x=wrt&meta=vc%3D
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Introductory Anatomy: Digestive System\nDr D.R.Johnson, Centre for Human Biology\nPurpose\n\nThe digestive system prepares food for use by hundreds of millions of body cells. Food when eaten cannot reach cells (because it cannot pass through the intestinal walls to the bloodstream and, if it could would not be in a useful chemical state. The gut modifies food physically and chemically and disposes of unusable waste. Physical and chemical modification (digestion) depends on exocrine and endocrine secretions and controlled movement of food through the digestive tract.\n\nMouth\n\nMouth Food enters the digestive system via the mouth or oral cavity, mucous membrane lined. The lips (labia) protect its outer opening, cheeks form lateral walls, hard palate and soft palate form anterior/posterior roof. Communication with nasal cavity behind soft palate. Floor is muscular tongue. Tongue has bony attachments (styloid process, hyoid bone) attached to floor of mouth by frenulum.\nPosterior exit from mouth guarded by a ring of palatine/lingual tonsils. Enlargement = sore throat, tonsillitis. \nFood is first processed (bitten off) by teeth, especially the anterior incisors. Suitably sized portions then retained in closed mouth and chewed or masticated (especially by cheek teeth, premolars, molars) aided by saliva Ducted salivary glands open at various points into mouth. This process involves teeth (muscles of mastication move jaws) and tongue (extrinsic and intrinsic muscles). Mechanical breakdown, plus some chemical (ptyalin, enzyme in saliva). Taste buds allow appreciation, also sample potential hazards (chemicals, toxins)\n\nSwallowing\n\nIn leaving the mouth a bolus of food must cross the respiratory tract (trachea is anterior to oesophagus) by a complicated mechanism known as swallowing or deglutination which empties the mouth and ensures that food does not enter the windpipe. \nSwallowing involves co-ordinated activity of tongue, soft palate pharynx and oesophagus. The first (buccal) phase is voluntary, food being forced into the pharynx by the tongue. After this the process is reflex. The tongue blocks the mouth, soft palate closes off the nose and the larynx rises so that the epiglottis closes off the trachea. Food thus moves into the pharynx and onwards by peristalsis aided by gravity. If we try to talk whilst swallowing food may enter the respiratory passages and a cough reflex expels the bolus.\n\nOesophagus\n\nThe oesophagus (about 10") is the first part of the digestive tract proper and shares its distinctive structure. Basic tissue layers of the gut are \n1. mucosa. Innermost, moist lining membrane. Epithelium (friction resistant stratified squamous in oesophagus, simple beyond) plus a little connective tissue and smooth muscle. \n2. submucosa. Soft connective tissue layer, blood vessels, nerves, lymphatics \n3. muscularis externa. Typically circular inner layer, longitudinal outer layer of smooth muscle \n4. serosal fluid producing single layer.\n\nStomach\n\nC shaped, left side abdominal cavity (because liver is on right). Cardioesophageal sphincter guarding entrance from oesophagus is of doubtful anatomical integrity (though functionally the diaphragmatic pinch cock serves). Pyloric sphincter guarding the outlet is much better defined. Fundus, body and pylorus recognised as distinct regions. Stomach secretes both acid and mucus (for self protection). Surface area increased by rugae. Serves as a temporary store for food which is also churned by muscular layers (three here) to form chyme, creamy substance voided via pyloric sphincter to duodenum\n\nDuodenum\n\nFirst part of small intestine. C shaped 10" long and curves around head of pancreas and entry of common bile duct (accessory organs of digestion, pancreas, liver see below). Chemical degradation of small controlled amounts of food controlled by pyloric sphincter begins here, enzymes secreted by pancreas and duodenum itself aided by emulsifying bile (which also
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http://www.earthlife.net/chelicerata/arachnophobia.html
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Angie,\n\nI'm assuming that you want some information on the organism's effect on the body, rather than information on the organism itself.\n\nTry http://www.pathguy.com  This is a website that is run in it's entirety by a pathology professor.  All the information in every lecture (all the 'articles' you find there are actually lectures he gives to his students), cites specific articles that appeared on NEJM, Disease-a-month, etc...nothing is anecdotal.\n\nGood luck!
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http://www.usq.edu.au/spider/info/guide.htm
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The following link has info about habitat, size, pics, etc.\n\nhttp://www.discoverlife.org/nh/tx/Vertebrata/Mammalia/Dipodidae/Zapus/hudsonius/
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I saw that someone answered that tarantulas are omnivores (meaning that they eat both animal and plant matter).  This is incorrect.  Most tarantulas are insectivores (they eat insects).  Some are considered carniverous however because they are large enough and do attack small mamals and birds.  Tarantulas really couldn't be omnivores because of their mouth structure.  It would be implausible for them to eat plant matter.  They are oviparous, meaning they lay eggs.  They lay the eggs in a cacoon-like egg sack which the female will carry with her in most species.  The eggs usually hatch in 4-6 weeks, depending on the species.  Hope this answered your question.
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They have the short, simple digestive system of a carnivore that is very tolerant of rotting food full of bacteria.\n\nSome reptiles are also very tolerant of rotting food.
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Link below is PDF article on this species
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Your digestive system.
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The Grammostola cala, or Rose Hair Tarantula, one of the most popular pet "spiders", have a life span of about 5 years. They are 3 - 4 inches standard leg span and native to the country of Chile.
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http://mywebpages.comcast.net/wnor/stomach.htm\nhttp://anatomy.med.umich.edu/gastrointestinal_system/stomach_ans.html\nhttp://education.yahoo.com/reference/gray/subjects/subject?id=247
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1. Draw and label a picture of the digestive system and trace the route that food takes through your body using a red crayon. (Hint: The picture at The Digestive System is a simpler to draw. You may want to use that site to get your drawing started.)\n \n2. Describe your digestive system. What mixes with the food when it is in the stomach? What does it do to the food? How long does food stay in each area? Share two interesting facts you learned about the digestive system.\n \n3. Draw a food pyramid and label it with the different food groups. Name the different categories of foods and how many servings a day you should eat.\n \n4. Below your food pyramid, list the food groups in a row across the paper. Under each food category list all the food you have eaten in that category for one whole day.\n \n5. Evaluate your eating habits. How did you do? What should you do differently to have a healthy body?