CHAPTER 25 Flashcards
(173 cards)
This is when blood escapes from the cardiovascular system or when it cannot be efficiently pumped to tissues the cells become insufficiently oxygenated and this is called?
hypoperfusion or shock
the supply of oxygen to and removal of wastes from the body cells and tissues as a result of the flow of blood through the capillaries
perfusion
the bodys inability to adequately circulate blood to the bodys cells to supply them with oxygen and nutrients
hypoperfusion
the bodys inability to adequately circulate blood to the bodys cells to supply them with oxygen and nutrients which is a life threatening condition
shock
the ______ system is responsible for the distribution of blood to all parts of the body
circulatory ( cardiovascular )
the cardiovascular system has 3 components
heart, blood vessels, blood
the hearts job is to pump blood which supplies _____ and ______ to the bodys cells
oxygen and nutrients
blood is circulated through the body through 3 major blood vessels such as
1.) arteries 2.) veins 3.) capillaries
these carry oxygenated blood sometimes deoxygenated blood AWAY from the heart
arteries
these have thick muscular walls that enable it to dilate or constrict depending on the oxygen and nutrients need by the cells
arteries
oxygen rich blood is emptied from the arteries into here_____ which supply every cell of the body
capillaries
these are one way valves that carry blood to the heart
veins
blood in a vein is under _____ pressure than in a artery
less
blood thats been depleted of oxygen and loaded with carbon dioxide and other wastes are emptied into here?
veins
the blood has several functions:
1.) transportation of gases 2.) nutrition 3.) excretion 4.) regulation 5.) protection
______ or ( expansion) of the blood vessels increases blood flow to the skin which increases heat loss from the skin surface
dilation
______ or narrowing of blood vessels decreases blood flow to the skin which decreases heat loss so core temp can be preserved
constriction
bleeding especially severe bleeding is called?
hemorrhage
____ is the main cause of shock in trauma
severe bleeding or hemorrhage
______ is caused when a force penetrates the skin or lacerations destroy underlying blood vessels
external bleeding
bleeding from an artery which is characterized by bright red blood that is rapid, profuse, and difficult to control
arterial bleeding
bleeding from a vein that is dark red or maroon blood and a steady easy to control flow
venous bleeding
______ hemorrhage occurs when extensive wounds open up large blood vessels or many smaller blood vessels
massive
blood coming from the heart is generally well _____
oxygenated