...- man * Grass - deer - eagle * Grass - earthworms - bird - snake * Grass - grasshopper - frog - snake - eagle * Grass - prairie dogs - coyotes * Grass - rabbit - snake - owl - hawk * Grass - snail - bird - fox What Is Digestion? Digestion is the complex process of turning the food you eat into nutrients, which the body uses for energy, growth and cell repair needed to survive. The digestion process also involves creating waste to be eliminated. The digestive tract (or gastrointestinal tract) is a long twisting tube that starts at the mouth and ends at the anus. It is made up of a series of muscles that coordinate the movement of food and other cells that produce enzymes and hormones to aid in the breakdown of food. Along the way are three other organs that are needed for digestion: the liver, gallbladder, and the pancreas. Food's Journey Through the Digestive System Stop 1: The Mouth The mouth is the beginning of the digestive system, and, in fact, digestion starts here before you even take the first bite of a meal. The smell of food triggers the salivary glands in your mouth to secrete saliva, causing your mouth to water. When you actually...
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...Unit 9 Project – Fantastic Voyage HS130 - 04 June 19, 2012 Fantastic Voyage Good afternoon everyone! This is Lisa back again with another top health news story. Once again I will be taking my mini-sub through the miniaturization process making us only 8 microns long and traveling through the human body. Today we will be swallowed by a 55 year old man, Mr. Smith, who is currently eating a hamburger, French fries, and enjoying a nice cold root beer. Our goal today is to monitor the digestion of Mr. Smith’s meal through the gastrointestinal tract. As we progress through the body, I will be describing all the major structures that we go through as well as describing what happens to the meal as it goes through the digestion process. Let’s get started. We are going to begin our journey by watching how the food is digested via the gastrointestinal pathway and the urinary pathway. Starting with the digestive system, the food will begin to be digested in the mouth where food is acted upon by saliva and enzymes like amylase (WiseGeek, Digestive System, 2012). The brain has a reflex that triggers the flow of saliva into our mouths when we see or even think of food (WiseGeek, Digestive System, 2012). There are three major salivary glands that are involved in this process: the parotid, submandibular, and sublingual glands. These glands function to secrete saliva into our mouths in order to keep it moist, lubricate and bind our food to begin the digestion process, and...
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...It all began in the heart, through systemic circulation. This meant the blood in the heart had been oxygenated, ready to be delivered. To embark on its journey to the rest of the body, but as well to pick up carbon dioxide and waist. This is the circulatory system center, and one of the most impor system. For it keep all part function, like the brain, who conor other all other part. Sending signal, that may send hormones when problems arise increases the heart rate or decrease it. Out from the many red blood cells, one single drop awoke confused and lonely. Her name was Ponyo, and she flowed with the contraction of open mitral valve to the left ventricle, being pushed to the aorta. Traveling still alone and confused, down with the current of the aorta. She bumped into another red...
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... Hello everyone, we are back for another exciting adventure, this one a little more appetizing than the last! Today’s Fantastic Voyage will follow the path of one tasty hamburger, some fatty french fries, and a cold and sweet root beer through a fifty-five year old man’s digestive, circulatory and urinary systems. I will be narrating all structures and functions as we explore; some imagery may be a little graphic, so hold on tight if you have a weak stomach! Here we commence our journey straight into the mouth of our hungry friend, making our descent into the first part of this nine meter alimentary canal. Make sure to hold on tight, for this hollow chamber lined with mucous membranes like the rest of the digestive tract is where mechanical digestion takes place almost instantly. The teeth begin to chew the bites of food, breaking them down into smaller pieces while the salivary glands begin to secrete enzymes called salivary amylase to begin the chemical process of breaking down carbohydrates (Cleveland Clinic, 2014). Now that the carbohydrates from the hamburger, fries and root beer have begun to be digested, they have taken the shape of a moist bolus allowing it to pass through the rest of the tract with less friction. Now we are about to enter the pharynx, a tube-like structure made of muscle behind the nasal cavities and mouth. Together with the bolus, we quickly cross the upper esophageal sphincter into the esophagus. Notice the muscular...
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...overall structure of the digestive system with reference to all the major organs The function of the digestive system is “the mechanical and chemical breakdown of foods and the absorption of nutrients by cells”(1) The structure of the digestive system consists of the alimentary canal which is 9 meters in length. Its starts at the mouth and ends at the anus with the accessory organs. Alimentary Canal Mouth-Consist of the tongue, taste buds, palate , palatine tonsils and teeth. Pharynx-is the nasal and oral cavitys. Oesophagus- a muscular tube leading to the stomach Stomach-pouch shapped organ. Small intestine-organ that contains 3 parts. Large intestine- starts at the ileum contains the caecum and colon and ends at the rectum. Accessory Organs Salivary glands- There are 3: Parotid, submandibular and sublingual. Liver- It has 2 lobes Gallbladder- Pancreas- Describe the process of digestion The digestion of food begins in the mouth which contains the tongue which moves food around making it easier to chew and also contains the taste buds, palate , palatine tonsils and teeth. The tooth has 4 layers which are the crown, the root, the enamel and dentin. These all contribute to digestion by reducing the size of the food, taste the food (which makes food enjoyable), and also protects against infection. The food then continues its journey through the pharynx to the muscular tube called the oesophagus. The food then passes to the stomach through the cardiac sphincter (which...
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...Assignment: Human Digestion Summary Suehaydee Figueroa SCI/241 NUTRITION Professor Tiera Pack Lawyer March 21, 2013 The human digestive system is a complex series of organs and glands that processes food. In order to use the food we eat, our body has to break the food down into smaller molecules that it can process; it also has to excrete waste. Most of the digestive organs (like the stomach and intestines) are tube-like and contain the food as it makes its way through the body. The digestive system is essentially a long, twisting tube that runs from the mouth to the anus, plus a few other organs (like the liver and pancreas) that produce or store digestive chemicals. The start of the process starts with the mouth. The digestive process begins in the mouth. Food is partly broken down by the process of chewing and by the chemical action of salivary enzymes. These enzymes are produced by the salivary glands and break down starches into smaller molecules. On the way to the stomach: the esophagus - After being chewed and swallowed, the food enters the esophagus. The esophagus is a long tube that runs from the mouth to the stomach. It uses rhythmic, wave-like muscle movements (called peristalsis) to force food from the throat into the stomach. This muscle movement gives us the ability to eat or drink even when we're upside-down. In the stomach - The stomach is a large, sack-like organ that churns the...
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...FON 241 LL Lab 3 The Digestive System Name: Tonya Hembree Questions: 1. Describe the path food follows as it travels through the digestive system. (15 pts.) The food goes into our mouths the digestive process begins. The mastication occurs and the taste buds kick in. The bolus is then swallowed passing through the esophagus to the stomach. When it hits the stomach the gastric juice begin to break it down. The chyme is then passed to the small intestines through the pyloric sphincter aids in its route. The gallbladder and pancreas excreted enzymes is mixed with the bolus of chyme. It continues its travels passing the appendix to the large intestines. Than is onto the tail end of its journey to the colon where it waited to be defecated...
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...travels of a hamburger, french fries, and a root beer through the gastrointestinal tract of a 55 year old man. There will be a lot of sights to explore along the way. A description of the entire digestive process will take place. After the description, the voyage will continue on through the distal ilium through the mucosal membrane. Then travels will resume in the bloodstream via the superior mesenteric vein. All major passageways and structures will be described going through the superior mesenteric vein all the way to the left renal artery. Once the voyage gets to the kidney, the nearest nephron will be entered. All structures will be discussed passing through on the way to the urinary tract where the voyage will exit out through the urethra. This journey is quite far but very interesting. The gastrointestinal tract is also known as the alimentary canal. Its main function is to digest food through various muscle movements and hormone and enzyme release. The tract is around 20-25 feet in length (wisegeek, 2014). The gastrointestinal tract consists of the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus. It also consits of accessory organs which include the tongue, mouth glands, pancreas, liver, and the gallbladder. Each and every one of these parts work together to break down food so it can be easily digested. As this 55 year old man ingests his food and drink, it will first enter through his mouth. While he is chewing his food, the salivary...
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...Lab The Digestive System and its Accessory Organs 1. Parotid Gland 2. Sublingual Gland 3. Submandibular Gland 4. Liver 5. Gallbladder 6. Duodenum 7. Pancreas 8. Hepatic Flexure 9. Ascending Colon 10. Ileum 11. Cecum 12. Appendix 13. Sigmoid Flexure 14. Anus 15. Rectum 16. Sigmoid Colon 17. Descending Colon 18. Jejunum 19. Transverse Colon 20. Splenic Flexure of Transverse Colon 21. Spleen 22. Stomach 23. Esophagus 1. Parotid Gland 2. Sublingual Gland 3. Submandibular Gland 4. Liver 5. Gallbladder 6. Duodenum 7. Pancreas 8. Hepatic Flexure 9. Ascending Colon 10. Ileum 11. Cecum 12. Appendix 13. Sigmoid Flexure 14. Anus 15. Rectum 16. Sigmoid Colon 17. Descending Colon 18. Jejunum 19. Transverse Colon 20. Splenic Flexure of Transverse Colon 21. Spleen 22. Stomach 23. Esophagus The Digestive Pathway Mechanical Digestion begins in the mouth from the moment that a food bolus enters the oral cavity. Mastication, the mechanical breakdown of the food bolus by chewing occurs here. Chemical Digestion begins when the Salivary Glands (Parotid, Sublingual and Submandibular Glands) release saliva into the oral cavity. Saliva contains amylase, an enzyme that breaks down carbohydrates. After bolus has been broken down adequately, swallowing occurs. The food bolus will move through the pharynx and enter the esophagus continuing its journey via peristalsis (rhythmic contractions of the muscle layers) until it passes through the lower...
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...dissection of the sheep heart and the cardiovascular system of the fetal pig by doing the following: a. Describe the similarities and differences between the fetal pig heart and the sheep heart. Differences: 1. Size 2. The left ventricular wall is thicker in the sheep than the fetal pig. Similarities: They both have 2 atria and 2 ventricles. b. Describe the four valves of the heart, including their name, location, and function. The four valves of the heart are the tricuspid valve, the pulmonic valve, the mitral valve, and the aortic valve. The tricuspid valve: It is located between the right atria and the right ventricle. It is comprised of three “flap-like cusps” which when in its closed position, prevents the deoxygenated blood entering the heart from the body, from backing up in the right atrium from the right ventricle (regurgitation). http://www.healthline.com/human-body-maps/tricuspid-valve The Pulmonic Valve: This valve is found between the right ventricle and the lungs. As the deoxygenated blood continues on its journey through the heart from the right ventricle, it makes its exit by way of the pulmonic valve. This structure is a one-way valve with prevents the flow of blood back into the right ventricle once it leaves the heart. http://www.healthline.com/human-body-maps/pulmonary-valve The mitral valve: This valve is located between the left atrium and the left ventricle. As the now oxygenated blood flows back through the left atrium, it does so under increased...
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...IB Biology Topic 6 Human Health and Physiology Introduction – The human body is composed of cells organize into tissues, tissues organized into organs and organs organized into an organ system. This chapter will cover some of the major organ systems of the boy and how those organ systems interact with each other = physiology. 6.1 Digestion Why do we digest food? – Here is the series of the events in order: ~Ingestion: You eat the food. ~Digestion: A series of chemical reactions, whereby you convert the ingested foot to smaller and smaller molecular forms. ~Absorption: Small molecular forms are absorbed through cells of your digestive system and pass into nearby blood or lymphatic vessels ~Transport: Your circulatory system delivers the small molecular nutrients to your body cells. Digestion solves a problem of molecular size. – Many of the foods we ingest have very large molecules –to large to pass across any cell membrane. – In order to get into our bloodstream, molecules must pass through the cell membranes of our intestines and then through the cell membrane of the capillary. Therefore any food we eat must be chemically digested to a suitable size. (Page 165) Digestion allows you to turn molecules into ‘your own’ – Plant cells characteristically store excess carbohydrates in the form of starch whereas animals store excess carbohydrates as glycogen. – Each type of living organism has its...
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... Explain the physiology of two named body systems in relation to energy metabolism in the body (P4) • Energy laws To begin with in this task I am going to talking about the body systems in relation to energy metabolism in the body. Firstly, there are two different laws of energy. The first law of thermodynamic is also known as the conservation of energy and this law states that energy can be transformed but it can’t be created or destroyed. The second law of energy is known as the transformation of energy and this may not be of use or be capable of being measured. • Forms of energy There are several forms of energy that exist and the most common form is chemical energy, this form of energy is the chemical bond which joins atoms or molecules with one another, when a new bond is made between two atoms, energy is needed for its formation and it is usually in the form of heat, even though light and electrical energy can be used. Also, when the bond is broken and the atoms are released the energy that was in the bond will also be released. The other forms of energy are light, heat, sound, electrical and nuclear. • Energy metabolism Energy is not just need for muscular activity and movement but it is also to circulate blood, lymph and tissue fluids throughout the body, it is also needed for breathing and taking in oxygen, for making new cells for growth and repair, to transmit nerve impulses so we can respond to changes within the environment, and to also build complex molecules...
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...Task 1d The digestive system is very important in digesting food and breaking it down so it can be digested easily. Throughout the process there are nutrients which are absorbed. There are many things that contributed to the digestive system such as the mouth which produces saliva which helps to break down food and nutrients such as carbohydrates with the help of an enzyme called amylase. The major food groups which are called macro nutrients include carbohydrates, proteins and fats. All of these nutrients play an important role in the body. There are also many micro-nutrients which include vitamins and minerals which provide the body with health and well-being. The main macro-nutrient is carbohydrate, this nutrient is mainly to provide energy...
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...Digestive and Respiratory System Worksheet Name: Before answering the questions below, log in to ADAM and view the clinical animations for Peristalsis and Gas Exchange. Remember, you may use our text, our discussions, and the internet to write your answers, but be sure to write your answers in your own words and to use correct citations where appropriate! Cutting and Pasting your responses will result in a Zero for this assignment! 1. Trace the path of an oxygen molecule from the air outside you to your tissues. Nose --> Mouth --> Pharynx --> Larynx --> Trachea --> (LUNGS: Bronchus --> Bronchioles --> Alveoli), then back out. Air enters the body through the nose and then moves into spaces called the nasal cavities. (Hair and cilia trap dust and debris and Air is warmed and moistened) Some of the cells lining the nasal cavities produce mucus. This sticky material moistens the air and keeps the lining from drying out. Mucus also traps particles such as dust. The cells that line the nasal cavities have cilia, tiny hair like extensions that can move together in a sweeping motion. Next, air enters the pharynx. The pharynx opens to two different passages. One is connected to the esophagus, wherein food and fluids are directed and the other is linked to the trachea where the air is passed through to the lungs. From the pharynx, air enters into the larynx (the voice box). The larynx is part of the upper respiratory tract that has two main functions: a passageway...
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...originally as to treat nasal problems before it was used for recreational purposes. Meth causes the user to experience a sense euphoria, but aswell cause paranoia, decreased appetite, and leaves permanent and irreversible damages on the user’s body. Meth has been classified by the U.S. Drug Enforcement Administration as a Schedule II stimulant, which makes it legally available only through a nonrefillable prescription...
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