Bromeliad-Living Spiders Improve Host Plant Nutrition and Growth Mutualism has become an important area of research in ecology. Plant performance can be improved if organisms‚ such as ants or spiders‚ reduce the damage to floral tissues caused by phytophages. Most mutualistic relationships that have been studied focus on the influence certain organisms have on improving plant performance and the shelter/ food the plant provides in return. For example‚ the Cecropia tree is defended by colonies
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secretion‚ mixing and movement‚ digestion‚ absorption and excretion. The mouth is the first stage of the gastrointestinal tract and is arranged with numerous structures that aid in the digestion of food. These include the tongue‚ teeth‚ and salivary glands and begin the first processes of digestion. The teeth are living structures and contain blood vessels and nerves. They are the process by which we chew food in preparation for swallowing. By chewing you allow enzymes and lubricants to release
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Experiment No. 12 Aim- To study the effects of temperature on the enzymatic activity of salivary amylase on substrates starch. Materials required- Test tubes‚ beakers‚ pipettes‚ funnels‚ thermometer‚ cotton‚ starch‚ iodine‚ potassium iodide‚ sodium chloride‚ thermocol box‚ buffer solution of pH 6.8 & match box. Principle- Salivary amylase is an amylolytic enzyme found in saliva released from salivary glands. All the enzymes show optimum enzymatic activity around 37° C which is our body temperature
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Autonomic nervous system The autonomic nervous system (ANS or visceral nervous system) is the part of the peripheral nervous system that acts as a control system functioning largely below the level of consciousness‚ and controls visceral functions. The ANS affects heart rate‚ digestion‚ respiration rate‚ salivation‚ perspiration‚ diameter of the pupils‚ micturition (urination)‚ and sexual arousal. Whereas most of its actions are involuntary‚ some‚ such as breathing‚ work in tandem with the conscious
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Week 7 Digestion Lecture Study Guide Based on information found in the lecture folder or other sources‚ answer the following questions. 1. What is digestion? Digestion is the mechanical and chemical breakdown of food into usable molecules 2. List some other names of the digestive tract. Alimentary Canal (GI Tract) 3. Explain where and how the mechanical breakdown of food occurs. Teeth begin digestion mechanically‚ Chewing (“mastication”) breaks apart food‚ 2 sets
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Effects of Angelica keiskei (Ashitaba) Leaves on the Salivary Bacterial Count and Salivary Flow Baldemor‚ Levee M. Dalida‚ Racy Detaro‚ Isabella Cherr K. Espineli‚ Felipe Rafael B. Perdido‚ Lanz Gerard O. Sta. Maria‚ Danica C. Teodosio‚ Kim Crizandra D. Zantua‚ Jazelle Christine G. Introduction Angelica keiskei (Ashitaba) is a lush green plant. The name “Ashitaba” means “tomorrow’s leaf” aptly termed due to its ability to reproduce green stem
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mononucleosis) and other nasty diseases. How does the virus work? The Epstein-Barr virus appears capable of infecting only two major cell types: the outer (epithelial) cells of the salivary gland‚ and white blood cells known as B lymphocytes (B-cells). Infection with the Epstein-Barr virus develops first in the salivary gland. Large amounts of the virus are released in the saliva‚ enabling it to spread from one person to another. How mono is spread Epstein-Barr virus (EBV) can be found in saliva
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function‚ the general characteristics of each type‚ and where in the body each type is located. 9. You should be able to identify each type of tissue when looking at a prepared slide or overhead picture. 10. Explain how the endocrine and exocrine glands vary in structure and function. Endocrine: inside 11. Be able to draw and label the following orientation and directional terms: superior‚ inferior‚ anterior‚ posterior‚ medial‚ lateral proximal‚ distal‚ superficial‚ and
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and the tongue begin the mechanical breakdown of food into smaller pieces. The tongue has taste buds with receptors sensitive to substances. The eye and the olfactory receptors in the nose are important for stimulating the salivary glands in the mouth to secrete saliva. Salivary amylase begins the digestion of starch into maltose. Eventually the semi-solid‚ partially digested food particles are stuck together to form a bolus by the tongue‚ which then pushes it towards the pharynx from where it is
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that spreads malaria. When female anopheles mosquitoes‚ which prefer to feed in the night‚ bite an infected human‚ the parasites in ingested by the mosquito and in the process becomes infected with plasmodium sporozoites which are carried in the salivary glands of the mosquito. After the mosquito is infected‚ the gametocytes present in the human blood as at the time of biting and which have found its way into the mosquito’s intestine dissociates into male and female gametes. These gametes later join
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