The Arteries
The Arteries
TheArteriesconveytheblood awayfromthehearttotheall partsof thebodythebranchesbecomesmaller&continuouswithcapillaries
• convey the blood away from the heart to the all parts of the body • the branches become smaller & continuous with capillaries The Arteries
Characteristics ofthearteriesThelarger arteriesusually occupythemostprotectedsituations,running,inthe limbsalong theflexor surface,where theyarelessexposedtoinjurySegmental &intersegmentalincharacterThe intersegmentalcharacterof theintercostal&lumbarvesselsisobvious.TheintersegmentalA.&V.arebilaterallysymmetricalvessels.Thearteriesin thetrunk of the body consistofparietal&visceralbranchesTaketheshortestpossiblecourseRuntogetherwithV.&N.inasheathoffasciato formneurovascularbundle
Characteristics of the arteries • The larger arteries usually occupy the most protected situations, running, in the limbs, along the flexor surface, where they are less exposed to injury. • Segmental & intersegmental in character. The intersegmental character of the intercostal & lumbar vessels is obvious. • The intersegmental A.& V. are bilaterally symmetrical vessels. • The arteries in the trunk of the body consist of parietal & visceral branches. • Take the shortest possible course. • Run together with V. & N. in a sheath of fascia to form neurovascular bundle
Characteristics ofthearteriesThe larger arteries usuallyoccupythemostprotectedsituations,runninginthelimbs,alongtheflexor surface,wherethey arelessexposedtoinjury..The intersegmental characterof intercostal&lumbarvesselsis obviousTheintersegmentalA.&V.arebilaterallysymmetricalvesselsThearteriesinthetrunkconsistofparietal&visceralbranchesTaketheshortestpossiblecourseRuntogetherwithV.&N.inaneurovascularbundle
Characteristics of the arteries • The larger arteries usually occupy the most protected situations, running, in the limbs, along the flexor surface, where they are less exposed to injury. • The intersegmental character of intercostal & lumbar vessels is obvious. • The intersegmental A.& V. are bilaterally symmetrical vessels. • The arteries in the trunk consist of parietal & visceral branches. • Take the shortest possible course. • Run together with V. & N. in a neurovascular bundle
VascularanastomosisAnastomoses:whichmeansthearteriesdonotend incapillaries.butunitewithoneanothertoformtheanastomoses·A-Aarterialarch/arterialnetwork.V-Vvenousplexus/network·A-Varteriovenousanastomoses.Collateral vessels&collateral circulation众u阁
• A-A arterial arch / arterial network • V-V venous plexus/ network • A-V arteriovenous anastomoses • Collateral vessels & collateral circulation • Anastomoses: which means the arteries do not end in capillaries, but unite with one another to form the anastomoses. Vascular anastomosis