First identify all the external structures visible on the head, thorax and abdomen of the rat. Rat dissection colouring worksheet teaching resources. Note the hairy coat that covers the rat and the sensory hairs whiskers located on the rats face, called vibrissae. Although many differences exist between humans and rats, the basic body plans are similar. Male urogenital structures penis is hidden on the male rat beneath a fold of skin the foreskin or prepuce. Compare the rats heart structure to that of a human heart. External jugular internal jugular lateral thoracic vertebral anterior vena cava intercostal posterior vena cava renal right gonadal common iliac external iliac. Dissection guide to the rat the norway rat rattus norvegicus family. Buy online, pick up in store is currently unavailable, but this item may be available for instore purchase. Believe it or not, the white rat is similar in composition to a human. A large solid organ that lies in the right upper quadrant immediately below the diaphragm. The mouth has a large cleft in the upper lip which exposes large front incisors. A rat dissection is a perfect way to show all the organs in the body.
Rat paper dissection by biology buff teachers pay teachers. This video demonstrates microdissection of four major brain regions include olfactory bulb, frontal cortex, striatum and hippocampus in fresh rat brain tissue. External features long tail, rasplike, may constitute 85% of body length, the scales overlap. Apres dissection, les cerveaux ont ete postfixes pendant 4h dans du pfa 4.
Pdf an optimized method of vessel dissection in establishment of. Nares the nares plural or naris singular are the external openings into the nasal cavity. A rapid method for the regional dissection of the rat braini thomas g. Introduction to rat anatomy white albino rats, rattus norvegicus are representatives of a major lineage of animals, the deuterostomes. Describe 3 ways in which the organs of the circulatory system and respiratory system are protected. You can analyse the circulatory system, respiratory system and digestive system through this dissection. It is often helpful to work in pairs on this dissection. Induction of aortic dissection in rats using n2aminoethyl. This is the new installment of my paper animal dissections. In this article we will discuss about the dissection of rat. Effects on behavior, brain chemistry and neuroanatomy in rats. It is important when doing dissections to make sure you know what you are doing before you start cutting. Use the scissors to cut the corner of the mouth where the maxilla. String is used to fasten the limbs of the rat back.
Determine if your frog is male or female by looking at the innermost finger of the forelimb. Dissection of rodent brain regions dissection and narrow pattern forceps cur ved 14. Dans le cas dune carence en fer, les dents seront blanches. Rats can be obtained from pet shops, biological supply companies or pharmaceutical firms. The laboratory rat was domesticated and bred from initially wildranging brown rats. Nitrile gloves come in different sizes, most women will wear a medium and most men will wear a large. Conclusion we conclude that the rat has a similar anatomy to humans though some things are different. Dissection tools probe needle forcepsscissors scalpel 4. Appareil respiratoire dune souris dissequee, vue ventrale loupe binoculaire.
Skeleton on the demonstration table there is a skeleton of a rat. 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. Preserved rat scissors pins scalpel apron goggles markerspins dissecting tray probe hand lens. Les rats dexperimentation eleves en captivite ont ete introduits aux. Manuel sur le soin et lutilisation des animaux dexperimentation. Carefully worded directions and fullcolor photographs ensure a superior dissection for study.
Dissect the digestive, respiratory, circulatory, excretory, and reproductive systems of the rat and relate each structure to its function. Virtual rat dissection step by step the biology corner. Female urogenital structures urethral orifice is the opening into the urethra part of the urinary system. In the biology lab, you will be working with specimens that have been preserved in chemicals and you will be working with sharp instruments. As you are dealing with a organisms make sure you clean your benches after use, use gloves and a lab coat. 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. A rapid method for the regional dissection of the rat brain. 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. Rats are gnawing mammals, and these incisors will continue to grow for as long as the rat lives. Dissection of the rat introduction you will be looking at the anatomy of the white rat. Fusiform body covered by hair except on nose, palms, lips, and soles. Important role for heat loss and used as a balance organ.
Of late, due to prevailing high cost, guinea pig is being replaced by rat. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Massons staining from the control group a and d, 100 mgkg aeea. 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. Before you start, obtain safety goggles, and nitrile gloves. Bile secreted from liver travels to duodenum via bile duct to break it. Rats are most frequently used as type specimen for mammalian dissection because they are readily available and they possess the typical mammalian body plan. Dissection of the rat rattus norvegicus springerlink. You want to view all of the structures in place or in situ, so work carefully with your specimen. Save the skin to wrap around your rat if you need to stop and begin again at another time. Rats are among the most commonly studied organisms in biology. Rat anatomy and dissection are presented in a clear stepbystep manner for a meaningful, effective learning experience. Deuterstomes are classified together because all share a similar developmental pattern.
What disease did rats carry that was responsible to killing almost half of the population of. Rat dissection prelab and vocabulary prelab background information use pre lab packet to answer following questions. Get a printable copy pdf file of the complete article 292k, or click on a page image below to browse page by page. Locate the liver, which is a dark colored organ suspended just under the diaphragm. Experience virtual dissection of a rat with rat dissection for the ipad from punflay. An optimized method of vessel dissection in establishment of the rat aortic. Scored a 1010 on the rat dissection quiz the following week. You may want to consult your text beforehand for the functions of the starred structures. It has the same circulatory system, similar muscles, and a similar skeletal structure. Four species of rats are common in india, of which three are wild. 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. Take the appropriate safety steps when dealing with the.
Vers une surveillance des zoonoses associees aux rats rattus. Most of what you learn on the rat is applicable to the anatomy of other mammals, such as humans. 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. Microdissection of rat brain into various regions is extremely important for the study of different neurodegenerative diseases. Find the digits, which are like fingers on both the fore and hind limbs 6. Make sure you know what is expected of you before you start. Vaginal orifice is the opening into the vagina part of the reproductive system. Rat neuroanatomy pdf mrnas in the rat cns have now been investigated by in ran pdf download game situ hybridization histochemistry. 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. Note the hairy coat that covers the rat and the sensory hairs whiskers located on the rat s face, called vibrissae. This group includes such diverse organisms as starfish, sea urchins, and all vertebrates. Full text full text is available as a scanned copy of the original print version. 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.
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