Carefully worded directions and fullcolor photographs ensure a superior dissection for study. Rat dissection prelab and vocabulary prelab background information use pre lab packet to answer following questions. External jugular internal jugular lateral thoracic vertebral anterior vena cava intercostal posterior vena cava renal right gonadal common iliac external iliac. Full text full text is available as a scanned copy of the original print version. Rat dissection colouring worksheet teaching resources. Pdf an optimized method of vessel dissection in establishment of. You can analyse the circulatory system, respiratory system and digestive system through this dissection. A rapid method for the regional dissection of the rat brain. Find the digits, which are like fingers on both the fore and hind limbs 6. Excretion helps remove waste main components kidneys bladder movement move on four feet use there tails to maintain balance can stand on back legs respiration brings oxygen.
A rapid method for the regional dissection of the rat braini thomas g. Most of what you learn on the rat is applicable to the anatomy of other mammals, such as humans. Conclusion we conclude that the rat has a similar anatomy to humans though some things are different. Take the appropriate safety steps when dealing with the. String is used to fasten the limbs of the rat back.
Cranial foramina in proechimys were identified and named on the basis of comparison with the rat and anatomical literature on the rat and other mammals. Bile secreted from liver travels to duodenum via bile duct to break it. Note the hairy coat that covers the rat and the sensory hairs whiskers located on the rat s face, called vibrissae. Vaginal orifice is the opening into the vagina part of the reproductive system. Nares the nares plural or naris singular are the external openings into the nasal cavity. Anatomical terms cranialtoward the head caudaltoward the tail dorsaltoward the backbone ventraltoward the belly side lateraltoward the side medialtoward the middle proximalcloser to the the base of a structure distalfarther away from a structure. External features long tail, rasplike, may constitute 85% of body length, the scales overlap. Rats are most frequently used as type specimen for mammalian dissection because they are readily available and they possess the typical mammalian body plan. You may want to consult your text beforehand for the functions of the starred structures. Microdissection of rat brain into various regions is extremely important for the study of different neurodegenerative diseases.
Dans le cas dune carence en fer, les dents seront blanches. Fusiform body covered by hair except on nose, palms, lips, and soles. Before you start, obtain safety goggles, and nitrile gloves. The mouth has a large cleft in the upper lip which exposes large front incisors. Virtual rat dissection step by step the biology corner. Four species of rats are common in india, of which three are wild. Nitrile gloves come in different sizes, most women will wear a medium and most men will wear a large. Manuel sur le soin et lutilisation des animaux dexperimentation.
Although many differences exist between humans and rats, the basic body plans are similar. Dissection of rodent brain regions dissection and narrow pattern forceps cur ved 14. Male urogenital structures penis is hidden on the male rat beneath a fold of skin the foreskin or prepuce. It is important when doing dissections to make sure you know what you are doing before you start cutting. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Dissection tools probe needle forcepsscissors scalpel 4. Preserved rat scissors pins scalpel apron goggles markerspins dissecting tray probe hand lens. The laboratory rat was domesticated and bred from initially wildranging brown rats.
Apres dissection, les cerveaux ont ete postfixes pendant 4h dans du pfa 4. Compare the rats heart structure to that of a human heart. As you are dealing with a organisms make sure you clean your benches after use, use gloves and a lab coat. Important role for heat loss and used as a balance organ. Rats are among the most commonly studied organisms in biology. Induction of aortic dissection in rats using n2aminoethyl. Female urogenital structures urethral orifice is the opening into the urethra part of the urinary system. Experience virtual dissection of a rat with rat dissection for the ipad from punflay. You want to view all of the structures in place or in situ, so work carefully with your specimen. Rat anatomy and dissection are presented in a clear stepbystep manner for a meaningful, effective learning experience. Note the hairy coat that covers the rat and the sensory hairs whiskers located on the rats face, called vibrissae. Dissect the digestive, respiratory, circulatory, excretory, and reproductive systems of the rat and relate each structure to its function. Massons staining from the control group a and d, 100 mgkg aeea. Believe it or not, the white rat is similar in composition to a human.
Introduction to rat anatomy white albino rats, rattus norvegicus are representatives of a major lineage of animals, the deuterostomes. Seiden3 department of pharmacological and physiological sciences and committee on biopsychology, department of behavioral sciences, the university of chicago, chicago, il 60637 received 25 june. What disease did rats carry that was responsible to killing almost half of the population of. It is often helpful to work in pairs on this dissection. While it is not clear when and where this process occurred, it is obvious that this animal was used as an object for experiment as early as in egypt, although the first documented reports come from greece, about 250 bc, when aristotle conducted autopsies in dogs. Buy online, pick up in store is currently unavailable, but this item may be available for instore purchase. Make sure you know what is expected of you before you start. Of late, due to prevailing high cost, guinea pig is being replaced by rat.
An optimized method of vessel dissection in establishment of the rat aortic. Effects on behavior, brain chemistry and neuroanatomy in rats. Rat paper dissection by biology buff teachers pay teachers. Vers une surveillance des zoonoses associees aux rats rattus. Use the scissors to cut the corner of the mouth where the maxilla. Appareil respiratoire dune souris dissequee, vue ventrale loupe binoculaire. Rats can be obtained from pet shops, biological supply companies or pharmaceutical firms. First identify all the external structures visible on the head, thorax and abdomen of the rat. Rats are gnawing mammals, and these incisors will continue to grow for as long as the rat lives. Scored a 1010 on the rat dissection quiz the following week. A large solid organ that lies in the right upper quadrant immediately below the diaphragm. The head of the rat, rattus norvegicus, and head of a south american rodent, proechimys trinitatus, were dissected, and nerves and blood vessels leaving and entering the skull were traced. Get a printable copy pdf file of the complete article 292k, or click on a page image below to browse page by page.
Les rats dexperimentation eleves en captivite ont ete introduits aux. This video demonstrates microdissection of four major brain regions include olfactory bulb, frontal cortex, striatum and hippocampus in fresh rat brain tissue. Dissection of the rat rattus norvegicus springerlink. Skeleton on the demonstration table there is a skeleton of a rat. This group includes such diverse organisms as starfish, sea urchins, and all vertebrates. It has the same circulatory system, similar muscles, and a similar skeletal structure. A laboratory manual of the anatomy of the rat by hunt, harrison randall, 1889publication date 1924 topics rats, anatomy publisher new york, the macmillan company collection.
Mission statement my role as an educator is to teach, and in doing so, positively impact the lives of young people in my class and at my school. In the biology lab, you will be working with specimens that have been preserved in chemicals and you will be working with sharp instruments. This is the new installment of my paper animal dissections. Determine if your frog is male or female by looking at the innermost finger of the forelimb. Deuterstomes are classified together because all share a similar developmental pattern. Save the skin to wrap around your rat if you need to stop and begin again at another time. Locate the liver, which is a dark colored organ suspended just under the diaphragm. In this article we will discuss about the dissection of rat. Dissection of the rat introduction you will be looking at the anatomy of the white rat.
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