What are the structure and function of a rat?
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Structure is the actual physical makeup of the rat...the muscles...the bones...the cells and membranes, etc.\n\nFunction is how the rat's body uses it's structures and chemistry to perform the actions that make it and keep it alive....Functions are things like moving (using muscle and bone structure), breathing (using muscle, respiratory and circulatory structures), metabolism, reproduction, eating, etc.
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Field Rat.  He would know how to fight dirty and to the death.  Dogs really just play.
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In biology, an organ (Latin: organum, "instrument, tool") is a group of tissues that perform a specific function or group of functions. Usually there is a main tissue and sporadic tissues. The main tissue is the one that is unique for the specific organ. For example, main tissue in the heart is the myocardium, while sporadic are the nervous, blood, connective etc. (Wikipedia.org)\n\nIn zootomy and dermatology, skin is an organ of the integumentary system made up of multiple layers of epithelial tissues that guard underlying muscles and organs. As the interface with the surroundings, it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation, sensation and vitamin D and B synthesis. Skin is considered one of the most important parts of the body.(Wikipedia.org)\n\nPretty much the skin is considered an organ because it is a group of tissues speciallizing in a certain task / tasks. For example the skin regulates temperature by using the sweat glands to produce sweat - sweat evaporates and cools the body.
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similar structures with different functions...\n\nBats arms and human arms have similar structure, but different function. Bats wings fly and we use our hands for dexterity
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yes because of their hard shell.rats can survive too.
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>>Wild rats: At normal conditions generally are at an average of 500 grams (1 lb) in weight but seldom weigh over 500 grams (1 lb) in the wild.\n\n>>For pet rats (fancy rats): Bucks (male rats) reach an average weight of between 400g and 800g, while does (female rats) can average between 250g and 450g.♥
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since i'm not an airhead-i'll answer on a fishing theme\na rat is a common name for a kingfish(yellowtail-usually)\nso a rat rod is designed for them\nit has a strong butt-short length and not too flexible tip\nthey are a very strong fish that make many runs when hooked\nhence ---the name rat---like a rat up a drainpipe--(really fast)
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Wow, you are nosy. 2 points for rat. Yayyy , cheese time:)
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Ew.  You have a rat.  Not sure about rats.  Dogs go though.
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1, = different species.\n2, = have no idea\n3. = stone is usually smaller than a rock.\n4, = different species and rats are much larger than mice\n5, = you can have a wheel without a tyre, tyre is a covering for a wheel\n6, = different species, different size.
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cell-tissue-organ-organ systems-organism (population)\nTissues are a group of specialized cells that perform a function. Organs are groups of specialized tissues that perform an even more complex function. Organ systems are groups of organs that perform a function in a series of complex, yet related steps. An organism is a body with  several organ systems necessary to maintain homeostasis. This can be extended to population which is several organisms existing together to survive (think food webs).\n\nUnicellular organisms do not have specialized cells. They have only one cell to perform all the functions it needs.
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Cell membrane? Structure is a phospholipid bi-layer. Function is semi-permeability, signaling/receptor, active/passive transport. This is all on wikipedia, by the way.
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"Rats" is a very crude term.  If you mean members of the genus Rattus, there are several species which will spend large amounts of time in trees.  Black rats tend to spend more time  climbing than brown rats.  They were once a comparable problem  aboard ships as they were very happy in the riggings of wooden sailing vessels.  Now they are much less common in the metal/concrete hulls of modern ships.\n\nIf you define rat to more broadly mean largeish murines, then there are many arboreal varieties.  The Philippines have a radaition of almost squirrel-like rats that include the cloudrunners (Crateromys).  Dephomys, Grammomys, Hylomyscus, Lenothrix, Mallomys, Mesembriomys, Phloeomys, Pogonomys, and Vandeleuria are all genera of Old World rats (some border on being "mice") that spend much of their time in trees.
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Muscular System\n\nMuscle tissue can be organized into separate muscles that are considered individual organs. Together, they form the muscular system.The cells in a muscle have two major duties: movement and heat production. Although the joints of the skeletal system allow movement, they cannot make the movement themselves. For this they require the contraction of striated muscle. Movement inside the body cavity is provided by muscles made up of smooth muscle cells. For example, the movement of food through the digestive tract is provided by the smooth muscles in the esophagus, stomach, and intestines. Urine is moved through the urinary system by smooth muscles in the ureters, bladder, and urethra. Air is moved in and out of the lungs by smooth muscle in the diaphragm. The muscular system also serves as the major heat generator for the body, keeping tissues warm.\n\nMuscle is made almost entirely of protein. When protein intake through food is low or when food protein is not digested or absorbed properly, it must come from some other source. That source is the muscle tissue. Even when enough protein is provided by the diet, cancer cells will raid the muscles for protein to change into glucose. When muscle tissue decreases, the individual muscle is less able to perform its job, causing weakness in movement and the sensation of coldness due to loss of heat production. Although cancer of the muscular system is very rare, cancer in general can cause a serious loss of muscle tissue.\n\nEndocrine System\nThe endocrine system includes the pituitary and pineal glands; the hypothalamus, thyroid, and adrenal glands; the pancreas; and the testes or ovaries and placenta. These glands release their hormones into the bloodstream directly, as opposed to the exocrine glands, which release their products into ducts. The cell citizens of an endocrine gland are writers. They compose messages called hormones, which are distributed primarily through the bloodstream. Glands perform the same job as the nervous system: communication, integration, and control of bodily functions. The signals travel slower but are much longer lasting. Hormones are the main regulators of metabolism, growth and development, and reproduction.\n\nEndocrine cell tumors are called carcinoids. Cancers of the endocrine system include the following:\n\nGerm cell cancers—These include testicular cancer (male), gestational trophoblasic neoplasms (placental), and ovarian cancer (female). Pancreatic cancer—Over 90 percent of the carcinomas of the pancreas are mucinous adenocarcinomas that originate in the pancreatic duct. Thyroid cancer. Because they stimulate abnormal hormone production, cancers of the endocrine system are often able to produce symptoms in distant sites.\n\nHope this helps, good luck.
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it has so many functions.. all concerning autonomic actions (involuntary actions) - \nthe most important are: \n1- control of cardiac activity (it has 2 centers: cardiac accelerating and inhibitory centers)\n2- control of respiration (via dorsal and ventral motor neurones)\n3- regulation of heart rate and respiratory rate via central chemoreceptors\n4- regulation of arterial blood pressure by controlling the diameter of arterioles via vaso-motor center\n5- control of vital actions as swallowing ...etc
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LIPIDS:\nOne function for Lipids is that of Energy storage. Lipids contain a lot of calories in a small space. Since Lipids are generally insoluble in polar substances such as water, they are stored in special ways in you body's cells. Lipids can also function as structural components in the cell. Phospholipids are the major building blocks of cell membranes. Lipids are also used as hormones that play roles in regulating our Physiology (metabolism). \n\nCARBOHYDRATES:\nThe main function of carbohydrates is to provide energy, but they also play an important role in the structure and function of the body organs and nerve cells \n\nPROTEINS:\nProteins have many functions. They serve as enzymatic catalysts, are used as transport molecules (hemoglobin transports oxygen) and storage molecules (iron is stored in the liver as a complex with the protein ferritin); they are used in movement (proteins are the major component of muscles); they are needed for mechanical support (skin and bone contain collagen-a fibrous protein); they mediate cell responses (rhodopsin is a protein in the eye which is used for  vision); antibody proteins are needed for immune protection; control of growth and cell differentiation uses proteins (hormones).  These are just a few examples of the many, many functions of proteins.
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In zootomy, epithelium is a tissue composed of a layer of cells. Epithelium lines both the outside (skin) and the inside (e.g. intestine) of organisms. The outermost layer of our skin is composed of dead squamous epithelial cells, as are the mucous membranes lining the inside of mouths and body cavities. Other epithelial cells line the insides of the lungs, the gastrointestinal tract, the reproductive and urinary tracts, and make up the exocrine and endocrine glands.\n\nConnective tissue is any type of biological tissue with an extensive extracellular matrix and often serves to support, bind together, and protect organs. There are four basic types:\n\n    * Bone contains specialized cells called osteocytes embedded in a mineralized extracellular matrix, and functions for general support.\n    * Blood functions in transport. Its extracellular matrix is blood plasma, which transports dissolved nutrients, hormones, and carbon dioxide in the form of bicarbonate. The main cellular component is red blood cells.\n    * Cartilage makes up virtually the entire skeleton in osteichthyes. In most other vertebrates, it is found primarily in joints, where it provides cushioning. The extracellular matrix of cartilage is composed primarily of collagen.