Body Systems of Various Organisms All organisms in the world have a range of systems and organs in their body. Some organisms may share similar body systems while others have absolutely nothing in common. Several of those organisms include humans‚ pigs‚ crayfish‚ and earthworms. From their mushy‚ gushy organs to their soft‚ gentle skin‚ you may think‚ “How are humans and pigs possibly alike? Or a crayfish and an earthworm?” In many ways they may not be‚ but in other ways‚ they are very much alike
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Earthworms are part of Phylum Annelida‚ Class Oligochaeta. They are classified in this phylum because their bodies are segmented and separated by an internal wall called septa. Each segment may or may not be different from the other depending on its function. Earthworms also classify with this phylum because it has a true coelom lined with a mesoderm and contain complex organ systems (Miller and Levine 694). Earthworms survive by feeding‚ circulating‚ respirating‚ excreting‚ reacting‚ moving‚ and
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to: navigation‚ search This article is about the human body as a whole. For components within the human body‚ see human anatomy. [[File:|thumb|300px|Human body features displayed on bodies on which body hair and male facial hair has been removed]] The human body is the entire structure of a human organism‚ and consists of a head‚ neck‚ torso‚ two arms and two legs. By the time the human reaches adulthood‚ the body consists of close to 100 trillion cells‚[1] the basic unit of life.[2] These
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Human Body Systems Human Body Organization The Human Body is composed of Organ Systems are composed of Organs are composed of Tissues are composed of Cells DIGESTIVE SYSTEM is a body system made up of digestive tract and glands responsible for digestion of food. Functions of Digestive System: Digestion of food. Breaking down of chunks of food into bits. Absorption of food nutrients. Excretion of undigested food. PARTS OF DIGESTIVE SYSTEM. Digestive Glands Salivary Gland –
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LEVELS OF ORGANIZATION OF NERVOURS SYSTEM: NEURONS: * STRUCTURE AND FUNCTION: Specialized cell transmitting nerve impulses; a nerve cell. Neurons have specialized projections called dendrites and axons. Dendrites bring information to the cell body and axons take information away from the cell body. Neurons communicate with each other through an electrochemical process. Information is transmitted to the receiving cell at junctions via chemical messengers called neurotransmitters. At this juncture
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Crayfish – also called crawfish‚ crawdads‚ freshwater lobsters‚ or mudbugs – are freshwater crustaceans resembling small lobsters‚ to which they are related; taxonomically‚ they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills and are found in bodies of water that do not freeze to the bottom. They are mostly found in brooks and streams where there is fresh water running‚ and which have shelter against predators. Most crayfish cannot tolerate polluted
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How Does Temperature Effect Earthworms? Introduction When one thinks of earthworms usually one thinks about slimy and nasty creatures that are only used for fishing. Wrong! If there were no worms on earth‚ farms and many plants could not be properly maintained. This paper will explain how important earthworms are to the earth and to our environment. In addition‚ this paper will cover the origin of an earthworm‚ the anatomy and other important characteristics. Origin The
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Earthworm is the common name for the largest members of Oligochaeta (which is either a class or subclass depending on the author) in the phylum Annelida. In classical systems they were placed in the order Opisthopora‚ on the basis of the male pores opening posterior to the female pores‚ even though the internal male segments are anterior to the female. Theoretical cladistic studies have placed them instead in the suborder Lumbricina of the order Haplotaxida‚ but this may again soon change. Folk names
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Earthworms are an organism which has been able to survive for millions of years due to the fact that they have been able to adapt to their surroundings in order to survive. Adaptation is an alternation or adjustment by which a species or individual improves its condition in relationship to its environment. Earthworms have adapted in many ways over the pass generations in order to improve reproduction‚ to get food and to improve their defenses. Earthworms live in moist soil which contains organic
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An earthworm can grow only so long. A well-fed adult will depend on what kind of worm it is‚ how many segments it has‚ how old it is and how well fed it is. An Lumbricus terrestris will be from 90-300 millimeters long. A worm has no arms‚ legs or eyes. There are approximately 2‚700 different kinds of earthworms. Worms live where there is food‚ moisture‚ oxygen and a favorable temperature. If they don’t have these things‚ they go somewhere else. In one acre of land‚ there can be more than
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