Transport Systems Essay In single celled organisms‚ nutrients‚ water and various substances that are need for basic cellular processes can easily be transported in and out through the cell membrane. This is an effective transport system for microscopic organisms‚ but multicellular organisms require a more complex transport system to sustain itself. Take humans for example; unlike a cell‚ only the outer layer of skin is in contact with the body’s outside environment. It’s not possible for substances
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Nervous System The nervous system is the part of an animal’s body that coordinates the voluntary and involuntary actions of the animal and transmits signals between different parts of its body. In most types of animals it consists of two main parts‚ the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists mainly of nerves‚ which are long fibers that connect the CNS to every other part of the body. The PNS includes motor
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Tiffany Goh Biology SAC 3 “The Transport systems play an essential role in the survival of flowering plants and mammals” It is imperative that the organism’s cells have an ideal supply of the necessary materials to ensure its survival. At the same time‚ waste material must be removed to make room for the new material coming in and to avoid infection. Necessary substances and waste material merely move in and out of unicellular organisms by diffusion‚ osmosis or active transport due to direct
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There is around 4% of every breathe that the body intakes the oxygen is absorbed into the blood. There are two body systems that are involved in the getting the oxygen and energy into the blood‚ respiratory and digestive system. The role of a respiratory system goes through many steps before the oxygen gets into the blood. The first step is when the air enters the nose and mouth and travels down into through the pharynx‚ larynx and towards the trachea. After it pasts the trachea‚ the air will travel
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most important systems in the body is the lymphatic system. One of many functions in the lymphatic system is to cleanse leaked plasma of bacteria and other foreign substances and return it to the blood stream. This also acts as a surveillance system for immune system cells. Another function of the lymphatic system is to stop or slow pathogen entry‚ prevent disease-causing microorganisms from spreading and to strengthen the response of the immune system. Also‚ the lymphatic system protects against
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The Lymphatic System http://www.healthyskincarehelp.com/wp-content/uploads/2011/07/lymphatic-system-simple.gif Pass – The lymphatic system plays a huge part in our bodies. It is essential for us to maintain a good health. It is a very complex system that is connected to the immune system. The lymphatic system acts as a one way drainage system The primary function of the lymphatic system is to transport ‘lymph’ which is a clear fluid that contains white blood cells (lymphocytes) and drain it
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RESPIRATORY SYSTEM A complete‚ schematic view of the human respiratory system with their parts and functions. Latin: systema respiratorium The respiratory system (or ventilatory system) is a biological system consisting of specific organs and structures used for the process of respiration in an organism. The respiratory system is involved in the intake and exchange of oxygen and carbon dioxide between an organism and the environment. The primary function of the respiratory system is to supply
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The Excretory System from The Human Body Systems Series catalog # 3292 Published & Distributed by… AGC/UNITED LEARNING 1560 Sherman Avenue Suite 100 Evanston‚ IL 60201 1-800-323-9084 24-Hour Fax No. 847-328-6706 Website: http://www.agcunitedlearning.com E-Mail: info@agcunited.com 1 THE EXCRETORY SYSTEM Grade Levels: 6-9 (Review for Grades 10-12) Viewing Time: 17 minutes with video quiz INTRODUCTION This video is designed for use in grades 6 - 9 as an introduction to
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The lymphatic system is an extensive drainage network that is closely connected to both the circulatory and immune systems. It is responsible for keeping bodily fluids in balance and defends the body against infections. It is made up of a network of very small tubes known as lymphatic vessels that carry lymph‚ a colourless fluid that contains a high number of white blood cells and resembles plasma‚ throughout the body. The major parts of the lymph tissue are located in the bone marrow‚ spleen‚ thymus
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The lymphatic system The lymphatic system belongs to the circulatory system; it consists of a network of lymphatic vessels which carry around fluid which is known as lymph. These carry the fluid towards the heart in different directions. These vessels are spread out the human body. The vessels are similar to that of the circulatory systems vessels as it consists of smaller lymphatic capillaries that form vessels. Lymph fluid is when the tissue fluid is collected though the lymph capillaries. When
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