blood vessels

• single layer of thin endothelium associated with scant connective tissue

  tunica intima
• bulky middle coat containing smooth muscle and elastin

  tunica media
• provides a smooth surface to decrease resistance to blood flow

  tunica intima
• the only tunica of capillaries

  tunica intima
• called the tunica adventitia in some cases

  tunica externa
• the only tunica that plays an active role in blood pressure regulation

  tunica media
• supporting, protective coat

  tunica externa
• forms venous valves

  tunica intima
• transport blood away from the heart

  arteries
• largest arteries with the lowest resistance

  elastic arteries
• arteries with the thickest tunica media; active in vasoconstriction

  muscular arteries
• control blood flow into individual capillary beds

  arterioles
• lumen is the size of one red blood cell

  capillaries
• capillary type with uninterrupted lining

  continous
• capillary type with numerous pores and gap junctions

  fenestrated
• capillaries type with large intercellular clefts and irregular lumen

  sinusoid
• vessels formed when capillaries unite

  venules
• vessels with thin walls and large lumens that often appear collapsed in histologic preparations

  veins
• veins with only a tunica intima; supported by surrounding tissues

  venous sinus
• sometimes referred to as conducting arteries

  elastic arteries
• artery type that accounts for most of the named arteries studied in an A and P lab

  muscular
• fill the blanks

  A) cardiac output

  B) peripheral resistance

  C) stroke volume

  D) heart rate

  E) vasoconstriction

  F) polycythemia

  G) blood volume

  H) excessive salt intake

  
• relationships are silly

  A) blood pressure

  B) resistance

  C) blood viscosity

  D) vessel length

  E) vessel diameter

  
• expansion and recoil of an artery during heart activity

  pulse
• pressure exerted by the blood against the blood vessel walls

  blood pressure
• the product of these factors yields blood pressure

  cardiac output
• resistance encountered by blood

  peripheral resistance
• event primarily responsible for peripheral resistance

  constriction of arterioles
• blood pressure during heart contraction 


  systolic blood pressure
• blood pressure during heart relaxation

  diastolic blood pressure
• site where blood pressure determinations are normally made 


  over arteries
• point at the body surface where the pulse may be felt

  pressure points and over arteries
• sounds heard over a blood vessel when the vessel is partially compressed

  sounds of korokoff
• increased diameter of arterioles

  decrease pressure
• increased blood viscosity


  increased pressure
• increased cardiac output 


  increased blood pressure
• increased pulse rate 


  increase blood pressure
• anxiety and fear


  increased pressure
• increased urine output 


  decreased pressure
• sudden change in position from reclining to standing

  decreased pressure