Purpose The 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. Mouth Mouth
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The principal structure of the digestive system is an irregular tube‚ open at both ends‚ called the alimentary (al-i-MEN-tar-ee) canal or the gastrointestinal (GI) tract. In the adult‚ this hollow tube is about 9 meters (29 feet) long Think of the tube as a passageway that extends through the body like a hallway through a building. Food must be broken down or digested and then absorbed through the walls of the digestive tube before it can actually enter the body and be used by cells The teeth
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URINARY SYSTEM This system consists of the KIDNEYS‚ URETERS‚ URETHRA‚ and BLADDER. Not many structures‚ but very important. Functions: 1. Regulate electrolytes (K‚ Na‚ etc) in body 2. Regulate pH in blood 3. Regulate blood pressure 4. Regulate blood volume 5. Removing metabolic wastes (chemicals produces by chemical reactions in the body are excreted). This is the least important of the kidney’s functions. You can survive for a few weeks without excreting waste products in the urine‚ but hour
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1 Introduction The word system is derived from the Greek word "Systema" which means an or- ganized relationship among functioning units or components. System analysis is a structured approach to problem solving that breaks down a system into its compo- nent pieces to determine how these component work together by interacting with each other to achieve their purpose. Descartes emphasised that a problem under consideration should be divided into as many parts as possible and then examined
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computer usage and information technology systems‚ which has improved the efficiency‚ and competitiveness of a business. Technology has led to store‚ analyse and process data‚ which can be used by the information system users. (Riley‚ 2012) Information system is a system‚ which creates‚ processes and retrieves information. It is a surrounding system to information technology‚ which is software‚ hardware‚ and communication infrastructure. Information system comprises of people‚ policies and procedures
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The Systems Approach Requirement in Principle of Management Submitted by: Jenine Faye Bernardino Michelle Calles Linden Balaoro Jerome Bereber Spencer Aro BSBA MM 1-2 Submitted to: Mrs. Laila P. Chavez Submitted on: January 12‚ 2011 Page 1 Table of Contents Introduction ……………………………………………………….. Page 3 Systems Theory ……………………………………………………….. Page 4 Elements in Business System ……………………………………………… Page 5 The 7-S Model ……………………………………………………….
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Operating Systems Task 1 An operating system (OS) is a part of software which manages the operation of a computer. It controls the hardware and software of a computer‚ without it a computer would be useless. DOS Disk operating system (DOS) was released in 1981. It will load from a floppy disk each time a computer starts. DOS uses a command line interface. Command line interface can be difficult to use if you aren’t trained or experienced in using it. DOS is the predecessor to windows. DOS is
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Operating System An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. It is a program designed to run other programs on a computer. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software
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II-C Passed to: Mrs. Maryjes Calades Operating system examples As computers have progressed and developed so have the operating systems. Below is a basic list of the different operating systems and a few examples of operating systems that fall into each of the categories. Many computer operating systems will fall into more than one of the below categories. GUI - Short for Graphical User Interface‚ a GUI Operating System contains graphics and icons and is commonly navigated by using
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Chapter no | Topic | 1 | Introduction‚ Types ‚ Computer System Overview | 2 | Operating System Structure‚ Components and Functions‚ Virtual Machine | 3 | Process Concept‚ Operation‚ Process scheduling‚ symmetric multi -processing‚ Cooperating Processes | 4 | Thread Concept‚ Thread Vs Process‚ IPC ‚kernel ‚microkernel | 5 | Scheduling‚ Types‚ Scheduling in batch‚ interactive and real-time systems (SJN‚ SJF‚ FIFO‚ LJN‚ round-robin‚ priority scheduling‚ and hybrid schemes). | 6 | Deadlock:
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