Dr Mottola Notes - Abdominal Cavity .docx

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Department
Anatomy and Cell Biology
Course
Anatomy and Cell Biology 2221
Professor
Michelle Mottola
Semester
Winter

Description
AnatomyNotesAbdomenLecture12RegionsLandmarkingforOrgansonsurfaceanatomy9segmentsDividebydrawingverticallinesthroughthemidclaviallinesaggitalplanethendividehorizontallybydrawingtwolinesfirstsubcostallinearoundrib10andsecondtranstubercularlinethroughL5AllowyoutoseelocationoforgansonsurfaceanatomyLeftHypochondriumSpleenRightHypochondriumLiverMostofthestomachliesintheEpigastricspaceMiddlerowisthelumbarregionLastrowistheinguinalregionIntheCentreistheumbilicalregionThelastrowinthemiddleisthesuprapubichyposgrasticorjustpubicspaceSurfaceAnatomyoftheAbdomenLineaSemilunarislateraloutlineofrectusabdominusmuscleLineaAlbaconnectivetissuelinethatgoesstraightdownmidlineofabdominalregionTendinousInsertionsintheRectusAbdominusmusclethisiswhatgivesyouyour6packRectusSheathconnectivetissueonfrontandbackofabsAbsisthemeatbetweenthetwosandwichesRectusAbdominisExternalobliquefibersrunningwithhandsinpocketlikeexternalintercostalsblendsinwithanteriorrectussheathsuperficialtointernalobliqueInternalobliquefibersrunsamewayasinternalintercostaloppositetoexternalobliqueTransversusAbdominisrunsintransverseplanedeepestofthreelayersAllconnectivetissuesheathsendinLineaAlbaInguinalregioninguinalligamentrunningfromtheanteriorsuperioriliacspinetothepubictubercleisactuallyafoldingofexternalobliqueaponerosisSuperficialinguinalringoutofthisareainamaleisthespermaticcordAbdominalMusclesanteriorVeryouterlayerexternalobliqueblendsintoexternalobliqueaponeurosisInternalObliqueisthemiddlelayerandTransersusabdominisisthedeepestlayerObliqueandTransversusAbdominisThreesheetsofmusclewhoseorientationdiffersarrangedlikethelayeringinplywoodThisorientationgivessupporttotheinternalvisceraorgansContractionwillincreasetheintraabdominalpressureWhywouldyouneedtoincreasepressureinabdomenForbowelmovementsstabilizespineexhalationandduringchildbirthtopushthebabyoutAttachmentslowerribsthoracoacolumbarfasciailiaccrestpubictubercleandLineaAlbaAnteriorRectusSheathFromtheExternalandInternalObliqueAponeurosisPosteriorRectusSheathBehindtheabdominusmusclesFromtheInternalObliqueandtransversusaponeurosisRectusSheathinCrossSectionAbovetheArcuateLineInternalobliquegoessplitsandgoesanteriorandposteriortotherectusmuscleTransverseabdominusisonlyposteriorPeritneumisserousmembranethatlinescavityoftheabdomendeeptotransersusabdominusBelowArcuatelineAnteriorrectussheathexternalinternalobliqueandtransverseabdominusallgoanteriortotherectusabdominustoformanteriorrectussheathBelowthearcuatelinethereisnoposteriorrectussheathPosteriorrectussheathtransversalisfacsiaBloodSupplySuperiorEpigastricfromtheinternalthoracicmammaryfromsubclaviancontinuesjustabovetherectussheathInferiorepigastricfromexternaliliacfromtheabdominalaortaaftertheinguinalligamenttheexternaliliacbecomesthefemoralarteryAnastomosesbwthesuperiorandinferiorepigasticsuppliesallbloodbesselsinthisregiontotheabdominalwallInguinalRegionExternalObliqueaponeruosisfoldsonitselfgivesrisetosuperficialinguinalringMadeupofmanylayersallanteriormuclesmakeupcanalConjointTendonMusclemedialattachingontopubicboneformingthesuperficialinguinalringThecommontendonofthetransverseandinternalobliquemusclesoftheabdomenextendingfromtheLineaAlbatothepubicboneMadeofInternalObliqueandTransversusabdominisposteriormediallywallofthecanalBACKDOORDeepinguinalRinginthetransveralisfascia
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