Invertebrate Endocrinology Overview of the Endocrine System * System of ductless glands that secrete hormones * Hormones are “messenger molecules” * Circulate in the blood * Act on distant target cells * Target cells respond to the hormones for which they have receptors * The effects are dependent on the programmed response of the target cells * Hormones are just molecular triggers * Basic categories of hormones * Amino acid based: modified amino acids (or amines)
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The purpose of this paper is to briefly discuss a tiny thing in your brain called the pituitary gland‚ talk about a few symptoms one may have if their pituitary gland is not functioning as it should‚ and what type of tests are done to help solve these issues. So have you ever just felt off‚ not like yourself‚ sluggish or irritable? Well good news it is probably just the pituitary gland that is acting up like a wayward teenager. While I may make light of this‚ it could be something extremely serious
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Physiology of stomach:- For understanding approaches for gastro retention‚ it is essential to overview gastric physiology and gastric motility. The stomach is situated in the left upper part of the abdominal cavity immediately under the diaphragm. Human stomach has a resting volume of 25-50ml‚ which can distend upto1500ml following a meal. It is divided into 5 anatomical parts: a) Cardia:- First part of the stomach below the esophagus. It contains cardiac spincter‚which is a thin ring of muscle
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DIGESTION OF CARBOHYDRATES Digestion of carbohydrate begins in the mouth‚ with the secretion of the enzyme salivary amylase from the serous cells of the salivary gland. This enzyme breaks starch and glycogen into disaccharides. The mucous cells of the salivary gland secrete a mucus‚ which causes the food to stick together‚ and acts as a lubricant to aid in swallowing. The salivary glands are grouped into three categories: the parotid gland‚ submandibular glands‚ and sublingual‚ all located
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I have always been interested in the human body. So why not learn more about it? When I get older I want to be an orthodontist. Learning about digestive system helps me learn more about how the body works. Before I started this research I didn’t really know that much about the digestive system. I mostly knew the basics‚ like that food moves from the mouth to the throat to the stomach and then leaves the body. But in reality there is much more to digestion that I didn’t know about. I found plenty
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TASK 1: The main components of a healthy diet. How the diet and energy requirements of the following individuals vary to meet their specific needs: - An 18 month old baby - A 17 year old girl - A man/woman working physically in the building trade - A pregnant woman - A lactating woman - A 70 year old man/woman. TASK 2: Explain the mechanical and chemical digestion. (a) Ingestion (b) Digestion (c) Absorption (d) Assimilation (e) Egestion TASK 3: The process of
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Cells of the body are organized into four fundamental tissues; epithelial‚ connective‚ muscle and nerve. Epithelial tissues line all surfaces of the body: the skin‚ cavities‚ ducts‚ vessels. They are named according to the cell shape on the free surface. Cells of a tissue are held together by the basement membrane and intercellular fibbers. These tissues receive their nutrition by diffusion‚ for they are without blood vessels. Simple squamous epithelium lines all blood and lymphatic vessel‚ including
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Integumentary System Definition Integument comes from the Latin word integumentum‚ meaning "cover" or an external layer.In animals and plants integument is any natural external covering‚ such as skin and membrane. The human integumentary system is an external body covering‚ but also much more. In human beings integumentary system is one of the organ system that protects body from various kinds of damages‚ such as water excreation. MAJOR ORGANS AND FUNTIONS OF INTEGUMENT SYSTEM: The system includes
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Endocrine system or endocrine disruptor is not something we commonly hear or discuss about in our society. However‚ they both play a big role in humans. Many people have no insight of endocrine system or endocrine disruptor. The endocrine system is glands secreting different types of hormones that go directly into bloodstream to transfer information and instruction to one set of cells to another certain cells. Hormones are the body’s chemical messenger which regulates growth and development‚ body’s
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Digestion begins in the mouth when one eats food. It begins the moment one takes a sandwich bite. The teeth are used to break the sandwich that contains lettuce and pickles into smaller particles or boluses so that the enzymes can digest the food much easier. Lettuce contains carbohydrates‚ proteins and fat. The tongue helps turn food in the mouth and mix with the saliva in the mouth which contains salivary amylase enzyme. It then passes through the esophagus to the stomach which is a mixer and grinder
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