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[FREE] Chapter 15 Digestion And Nutrition Mastery Test Answers | new!
Examples of herbivores, as shown in Figure These animals have evolved digestive systems capable of handling large amounts of plant material. Herbivores can be further classified into frugivores fruit-eaters , granivores seed eaters , nectivores...
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Facultative carnivores are those that also eat non-animal food in addition to animal food. Note that there is no clear line that differentiates facultative carnivores from omnivores; dogs would be considered facultative carnivores. Carnivores like...
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From the gizzard, the food passes through the intestine, the nutrients are absorbed, and the waste is eliminated as feces, called castings, through the anus. Vertebrate Digestive Systems Vertebrates have evolved more complex digestive systems to adapt to their dietary needs. Some animals have a single stomach, while others have multi-chambered stomachs. Birds have developed a digestive system adapted to eating unmasticated food. Humans and many animals have a monogastric digestive system as illustrated in Figure The process of digestion begins with the mouth and the intake of food. The teeth play an important role in masticating chewing or physically breaking down food into smaller particles. The enzymes present in saliva also begin to chemically break down food. The esophagus is a long tube that connects the mouth to the stomach.
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Using peristalsis, or wave-like smooth muscle contractions, the muscles of the esophagus push the food towards the stomach. In order to speed up the actions of enzymes in the stomach, the stomach is an extremely acidic environment, with a pH between 1. The gastric juices, which include enzymes in the stomach, act on the food particles and continue the process of digestion. Further breakdown of food takes place in the small intestine where enzymes produced by the liver, the small intestine, and the pancreas continue the process of digestion. The nutrients are absorbed into the blood stream across the epithelial cells lining the walls of the small intestines.
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The waste material travels on to the large intestine where water is absorbed and the drier waste material is compacted into feces; it is stored until it is excreted through the rectum. However, in the rabbit the small intestine and cecum are enlarged to allow more time to digest plant material. The enlarged organ provides more surface area for absorption of nutrients. Rabbits digest their food twice: the first time food passes through the digestive system, it collects in the cecum, and then it passes as soft feces called cecotrophes. The rabbit re-ingests these cecotrophes to further digest them. Avian Birds face special challenges when it comes to obtaining nutrition from food. They do not have teeth and so their digestive system, shown in Figure Birds have evolved a variety of beak types that reflect the vast variety in their diet, ranging from seeds and insects to fruits and nuts. Because most birds fly, their metabolic rates are high in order to efficiently process food and keep their body weight low.
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The stomach of birds has two chambers: the proventriculus, where gastric juices are produced to digest the food before it enters the stomach, and the gizzard, where the food is stored, soaked, and mechanically ground. The undigested material forms food pellets that are sometimes regurgitated. Most of the chemical digestion and absorption happens in the intestine and the waste is excreted through the cloaca. The avian esophagus has a pouch, called a crop, which stores food. Food passes from the crop to the first of two stomachs, called the proventriculus, which contains digestive juices that break down food. From the proventriculus, the food enters the second stomach, called the gizzard, which grinds food. Some birds swallow stones or grit, which are stored in the gizzard, to aid the grinding process.
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Birds do not have separate openings to excrete urine and feces. Instead, uric acid from the kidneys is secreted into the large intestine and combined with waste from the digestive process. This waste is excreted through an opening called the cloaca. Parts of the Digestive System The vertebrate digestive system is designed to facilitate the transformation of food matter into the nutrient components that sustain organisms. Oral Cavity The oral cavity, or mouth, is the point of entry of food into the digestive system, illustrated in Figure The food consumed is broken into smaller particles by mastication, the chewing action of the teeth.
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All mammals have teeth and can chew their food. The extensive chemical process of digestion begins in the mouth. As food is being chewed, saliva, produced by the salivary glands, mixes with the food. Saliva is a watery substance produced in the mouths of many animals. There are three major glands that secrete saliva—the parotid, the submandibular, and the sublingual.
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Saliva contains mucus that moistens food and buffers the pH of the food. Saliva also contains immunoglobulins and lysozymes, which have antibacterial action to reduce tooth decay by inhibiting growth of some bacteria. Saliva also contains an enzyme called salivary amylase that begins the process of converting starches in the food into a disaccharide called maltose. Another enzyme called lipase is produced by the cells in the tongue. Lipases are a class of enzymes that can break down triglycerides.
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The lingual lipase begins the breakdown of fat components in the food. The chewing and wetting action provided by the teeth and saliva prepare the food into a mass called the bolus for swallowing. The tongue helps in swallowing—moving the bolus from the mouth into the pharynx. The pharynx opens to two passageways: the trachea, which leads to the lungs, and the esophagus, which leads to the stomach.
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The trachea has an opening called the glottis, which is covered by a cartilaginous flap called the epiglottis. When swallowing, the epiglottis closes the glottis and food passes into the esophagus and not the trachea. This arrangement allows food to be kept out of the trachea. Digestion of food begins in the a oral cavity. Food is masticated by teeth and moistened by saliva secreted from the b salivary glands. Enzymes in the saliva begin to digest starches and fats. With the help of the tongue, the resulting bolus is moved into the esophagus by swallowing.
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The chewed and softened food passes through the esophagus after being swallowed. The smooth muscles of the esophagus undergo a series of wave like movements called peristalsis that push the food toward the stomach, as illustrated in Figure The peristalsis wave is unidirectional—it moves food from the mouth to the stomach, and reverse movement is not possible. The peristaltic movement of the esophagus is an involuntary reflex; it takes place in response to the act of swallowing. The esophagus transfers food from the mouth to the stomach through peristaltic movements. A ring-like muscle called a sphincter forms valves in the digestive system. The gastro-esophageal sphincter is located at the stomach end of the esophagus. In response to swallowing and the pressure exerted by the bolus of food, this sphincter opens, and the bolus enters the stomach. When there is no swallowing action, this sphincter is shut and prevents the contents of the stomach from traveling up the esophagus.
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List 4 Organic nutrients and give a fu Start studying chapter 15 digestive system and nutrition chapter assessment. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Nov 15, - Chapter 15 Digestion And Nutrition Pdf chapter 15 digestion and nutrition is a free HD wallpaper sourced from all website Chap15studyoutline - Chapter 15 Digestive System and Nutrition Introduction ; Biology Student Edition answers to Chapter 30, Digestive and Excretory Systems - Standardized Test Prep - Page 3 including work step by step written by community members like you. Textbook Authors: Miller, Kenneth R. It means that anything gained from reading autograph album will be long last time investment. You may not need to acquire experience in genuine condition that will spend more money, but you can assume the way of reading. The digestive system is continually at work, yet people seldom appreciate the complex tasks it performs in a choreographed biologic symphony.
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Consider what happens when you eat an apple. You may Chapter 15 Digestion and Nutrition Digestive System: Digestion refers to the mechanical and chemical breakdown of foods so that nutrients can be absorbed by cells. The digestive system consists of the alimentary canal through which all of the organs the food actually passes and the accessory organs that aid in digestion. Free Biology Flashcards about Digestion Ch. Quizlet flashcards, activities and games help you improve your grades. Read Free Chapter 15 Digestion And Nutrition Mastery Test locations, allowing you to get the most less latency time to download any of our books like this one. Chapter 15 — Digestion and Nutrition Digestion refers to the mechanical and chemical breakdown of foods so that nutrients can be absorbed by cells.
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The digestive system carries out the process of digestion. Chapter 12 Digestion and nutrition. Download this image for free in HD resolution the choice "download button" below. If you do not find the exact resolution you are looking for, then go for a native or higher resolution. Study Understanding Nutrition discussion and chapter questions and find Understanding Nutrition study guide questions and answers. Chapter 15 Answers: Digestive System What is the digestive system? The digestive system consists of organs that break down food, absorb its nutrients, and expel any remaining food waste. The Digestive and nutrition. Digestion Ch. Question Answer; Digestion is the mechanical and chemical breakdown of foods and the absorption of the resulting nutrients by cells.
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True: The mouth, pharynx, esophagus, stomach, and large and small intest Start studying Chapter 15 Digestion and Nutrition. Start studying Chapter 15 Digestive System. Rate 5 stars Rate 4 stars Rate 3 stars Rate 2 stars Rate 1 star. Forced Order. Support Sporcle. Chap15outline 1 - Chapter 15 Digestion and Nutrition Seventh Edition P. McDonald R. Edwards J. Greenhalgh P Advances in Physiological Sciences, Volume Nutrition, Digestion, Metabolism covers the proceedings of the 28th International Congress of Physiological Sciences, held in Budapest in , which mainly focuses on human nutrition, digestion, and metabolism.
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Download Digestion And Nutrition Mastery Test
This compilation is divided into eight parts. This text first gives an introduction to vitamins and trace elements, including its role Chapter 1. Section 1: Food and Energy. Explain why the body needs food. Name the 6 essential nutrients needed for normal body functioning. Describe how the energy in foods is measured. Describe digestion in a bivalve mollusc. Digestion in Bivalves Digestion in bivalve molluscs is a coordination of three cycles: 1 Feeding, 2 extracellular digestion, and 3 intracellular digestion. A resting stage is preparative for extracellular digestion. ILP Chapter 16 and Objective: Broad Concept: Humans need to digest and absorb a variety of essential nutrients in order to maintain proper growth and development. Section 3. Human physiology.
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Chapter 15 Digestion And Nutrition Mastery Test
Alimentary canal is different from digestive system. Answer: Alimentary canal is a long, muscular coiled tube. It is also known as digestive tract. The alimentary canal with its associated glands constitute the digestive system. These glands are salivary glands, liver and pancreas. Question Windpipe runs adjacent to the foodpipe. What will happen if food particles enter the windpipe? Answer: The windpipe carries air from the nostrils to the lungs. It runs adjacent to the foodpipe. If, by chance, food particles enter the windpipe, we feel choked, get hiccups or cough. Explain how is small intestine designed to absorb digested food. Answer: The finger-like projections called villi are present in the inner walls of the small intestine.
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The villi increase the surface area. The large surface area of small intestine helps in the rapid absorption of the digested food. Label the given figure as directed below in A to D and give the name of each type of teeth. Briefly describe the process of digestion in Amoeba with the help of labelled diagram. It is a very simple animal and cannot be seen by naked eyes. Amoeba has a cell membrane, a rounded dense nucleus and many small bubble-like vacuoles in its cytoplasm. These vacuoles are of two types, i. Food vacuole contains food surrounded by water while contractile vacuole contains liquid or water and controls water regulation activity in Amoeba. Its shape is not fixed, i. The body of Amoeba has finger-like projections, called pseudopodia or false feet. It captures food and helps in locomotion of Amoeba.
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The food of Amoeba are microscopic organisms like tiny plants and animals present in pond water. When Amoeba senses its food, it pushes out pseudopodia around the food particle and engulfs it. The two pseudopodia join around the food particle and trap the food particle with a little water forming vacuole around food, thus the food gets trapped. Digestive juices present inside the vacuole, acts on the food and break it into simpler substances.
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This digested food is then absorbed and is used for growth, maintenance and multiplication of Amoeba. The undigested food residue is expelled outside by the vacuole. The basic process of digestion of food and release of energy is as similar to the other organisms. Question 3. Label the following parts of above figure and name them. Little Rishi student of class VI was watching his favourite cartoon serial on television.
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Suddenly he got hiccups. His elder brother Shubham who was sitting near by him gave him a glass of water and suggested not to eat too fast in a hurry. He asked his father. His father smiled and explained him that it is only a myth. He also explained him the proper scientific reason behind it. It may result in a choking sensation called hiccups. Question 5. Jaya returned from school and found that grandmother was scolding her maid, Rani as she did not come yesterday.
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She also suggested her to give his son a solution of sugar and salt in clean water, many times a day for fast recovery. Jaya was surprised. She rushed to her mother and asked the scientific reason for it. Her mother smiled and explained her the importance of this solution. Why is it given to a person suffering from diarrhoea?
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It is given to a person suffering from diarrhoea to prevent the dehydration. Question 6. Read the following passage carefully and answer the questions that follow it. Bile juice is stored in a sac called, gall bladder, located near its organ of secretion, liver. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Though bile juice is devoid of any digestive enzymes, it is required for the digestion of fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from the pancreas a Which organ secretes the bile juice?
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Question 7. Define oral rehydration solution and when it is given to the patient? How can you prepare ORS at home? Answer: Oral rehydration solution is the solution of sugar and salt in a particular ratio in the clean water. When a person passes out watery stools frequently, the disease is called diarrhoea. In this condition there is a loss of water and salt from the body of a person. This is called dehydration which may be fatal if not cured at proper time. In order to prevent dehydration, the person or patient should be given ORS.
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ORS makes up the loss of water and salts in the body and sugar provides energy which helps in the recovery of disease. It should be given to a patient suffering from diarrhoea at a regular interval. At home the ORS can be prepared by dissolving a teaspoonful of sugar and pinch of salt in a glass of clean water. The water used for preparing ORS should be first boiled and then cooled so that all the microorganisms or harmful bacteria may be killed.
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Question 8. Open your mouth, look into a mirror and try to count the different types of teeth of teeth in your mouth. Compare them with figure 2.
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Nervous System Mastery Test Answers. Digestive System Quizzes. Archives — Health. Digestive system study guide. Anatomy of the Digestive System. Integumentary system parts: Quizzes and diagrams Kenhub. Alimentary Canal. Accessory Organs. Wildlife Online Questions amp Answers Squirrels. Course Descriptions. When people should go to the book stores, search foundation by shop, shelf by shelf, it is in reality problematic. Start a live quiz. Classic Which of these is a function of the digestive system? Where does digestion begin? Athletic Training and TherapyHuman Anatomy and. PhysiologyStudent Study Guide to Accompany.
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Digestive & Excretory Systems Quiz - Quizizz
Digestion Mastery Test Flashcards Quizlet. Chapter 1 Anatomy Test Review Guide answers. Anatomy of the Digestive System - Chute. Study Guide - Digestive System. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Digestive System Test Bank Objective 5. What is the main function of the digestive system? Hold and receive food b. Control the chemical activities of the body c. Break the food down to be used for energy d. Remove excess waterThis quiz will evaluate your knowledge of the many portions of the anatomy of the Digestive, or Gastrointestinal System. There is one correct answer for each question and no time limit on this Digestive Anatomy Quiz. Each correct answer is worth one point. Good luck, and remember that you can take the Digestive Anatomy Quiz multiple times on multiple days.
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Disclaimer — All answers are felt to be correct for the Digestive Anatomy. Anatomy What system do the kidneys and ureters belong to. Urinary What system does the liver belong to? Digestive What is the study of the general form and superficial markings of an organism called? Surface anatomy The term for the study of a liver cell would be called what?
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