Presentation on theme: "Rat Dissection RATS The following slides are intended to help you with dissection of the rat and then to review for the lab practical that will follow."— Presentation transcript:
1Rat DissectionRATSThe following slides are intended to help you with dissection of the rat and then to review for the lab practical that will follow.
2Rat Dissection Scientific Name: Rattus norvegicus Common Name: Rat RATSScientific Name: Rattus norvegicusCommon Name: RatKingdom- AnimaliaPhylum- ChordataSubphylum- VertebrataClass- MammaliaOrder- Rodentia
3Rat DissectionSOURCESThe following web sites were used to obtain various dissection pictures.(1) 15/biolab15_1.html(2)(3)(4)(5)(6)(7) This has an excellent self quiz!Urogenital Tutorial-
4Make External Observations vibrissae.incisors.pupil and the nictitating membrane.eyelidspinna, and the auditory meatusteatsTailAnusurinary aperture vaginal orifice vulva. scrotal sacs testes. prepuce, urogenital orifice, where both urine and sperm exit.
46Rat Dissection ABDOMINAL CAVITY Source #1 You should be familiar with the order of the parts of the alimentary canal. Following the path that food would take, we would pass through:Oral CavityPharynxEsophagusStomachPyloric SphincterSmall IntestineDuodenumJejunumIleumLarge IntestineCecumColon - Ascending Limb - Transverse Limb - Descending LimbRectumAnusSource #1
56Rat Dissection NAME THAT FUNCTION: ANATOMICAL TERMS Toward the midline Review and Quiz YourselfRat DissectionANATOMICAL TERMSNAME THAT FUNCTION:Here’s a word bank to help you out: Caudal Cranial Distal Dorsal Lateral Medial Proximal VentralToward the midlineToward the back (upper surface of body)Toward the tailToward the sideFarthest from the point of attachmentToward the belly (underside of body)Closest to the point of attachmentToward the headMedialDorsalCaudalLateralDistalVentralProximalCranial
57Rat Dissection NAME THAT FUNCTION: ANATOMICAL TERMS Review and Quiz YourselfRat DissectionANATOMICAL TERMSNAME THAT FUNCTION:The term referring to bending of a jointThe term referring to movement of an appendage toward the long axis of the bodyThe term referring to straightening of a jointThe term referring to movement of an appendage away from the long axis of the bodyFlexionAdductionExtensionAbduction
58Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Vibrissae Review and Quiz YourselfRat DissectionORGAN FUNCTIONNAME THAT ORGAN:VibrissaeHere’s a word bank to help you out: Mesentery Nares Peritoneum Pinna Septum Vibrissae VisceraThe whiskers, which have a sensory functionThe flap-like external ear that directs sound waves into the ear openingPaired openings leading into the noseOrgans of the thoracic and abdominal cavitiesA partition or wall separating 2 cavitiesA membrane which suspends the organsShiny membrane that lines the abdominal cavityPinnaNaresVisceraSeptumMesenteryPeritoneum
59Rat Dissection NAME THAT MUSCLE: ORGAN FUNCTION Biceps Femoris Review and Quiz YourselfRat DissectionORGAN FUNCTIONNAME THAT MUSCLE:Here’s a word bank to help you out: Biceps Brachii Biceps Femoris External Obliques Gastrocnemius Gluteus Maximus Gracilis Latissimus Dorsi Masseter Pectoralis Major Triceps BrachiBiceps FemorisGluteus MaximusorAbducts the thighExtends the forelimbConstricts the abdomenCloses the jawAdducts the thighFlexes the forelimbDraws the forelimb toward the chestExtends the footMoves the forelimb dorsally + caudallyTriceps BrachiiExternal ObliquesMasseterGracilisBiceps BrachiiPectoralis MajorGastrocnemiusLatissimus Dorsi
60Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Review and Quiz YourselfRat DissectionORGAN FUNCTIONNAME THAT ORGAN:Here’s a word bank to help you out: Diaphragm Hard Palate Lungs Soft Palate Teeth Thymus Gland Thyroid Gland Tongue TracheaMatures WBC’s (White blood cells)Moves food in mouth and tastesOrgans for gas exchangeWindpipe leading from pharynx to lungsBony anterior roof of mouthMuscular sheet that separates the thoracic and abdominal cavitiesIncisors (biting) and molars (grinding)Muscular posterior roof of mouthAffects metabolic rate and body growthThymus GlandTongueLungsTrachaeHard PalateDiaphragmTeethSoft PalateThyroid Gland
61Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Review and Quiz YourselfRat DissectionORGAN FUNCTIONNAME THAT ORGAN:Here’s a word bank to help you out: Cecum Esophagus Large Intestine Liver Pancreas Small Intestine Spleen Stomach Rectum RugaeProduces insulin for glucose metabolismAids in digestion of proteinsFood tube from pharynx to stomachDigests and absorbs nutrientsFolds in stomach that help mix foodSecretes bile, cleans blood, stores glycogenCleans blood, removes old RBC’sReabsorption of waterBlind pouch where ileum joins colonEnd of intestines, compaction of fecesPancreasStomachEsophagusSmall IntestinesRugaeLiverSpleenLarge IntestineCecumRectum
62Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Kidney Review and Quiz YourselfRat DissectionORGAN FUNCTIONNAME THAT ORGAN:Here’s a word bank to help you out: Bladder Kidney Ovary Prostate Scrotum Seminal Vesicle Testes Ureter Uterine HornKidneyRemoves wastes + excess H20 from bloodHouses developing fetusesProduces and stores spermStores urine before excretionSecretes a fluid that aids sperm survival and motilityProduces eggsCarry urine from kidney to bladderSecretes a fluid that nourishes spermSac that holds the testesUterine HornTestesBladderProstateOvaryUreterSeminal VesicleScrotum
63Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Pulmonary Artery Review and Quiz YourselfRat DissectionORGAN FUNCTIONNAME THAT ORGAN:Pulmonary ArteryHere’s a word bank to help you out: Abdominal Aorta Aorta Atria Common Carotid Pericardial Sac Pulmonary Artery Renal Artery Vena Cava VentriclesTakes blood from heart to lungsLarge veins take blood to right atriumTop chambers, receive bloodMembrane around heartArtery taking blood to headBottom chambers that pump blood outLargest artery taking blood from left ventricleLower descending aorta takes blood to lower trunk and legsTakes blood to kidneysVena CavaAtriaPericardial SacCommon CarotidVentriclesAortaAbdominal AortaRenal Artery