Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
|
2 types of vessels
|
arteries - veins
|
|
|
arteries carry …, are high in ____, & branch into ____
|
blood away from heart - oxygen - arterioles
|
|
|
arterial systems are divided into 3 groups
|
elastic arteries - muscular arteries - arterioles
|
|
|
elastic arteries size & function
|
largest - elastic fibers in tunica - expand + recoil (pulse)
|
|
|
muscular arteries size & function
|
medium - carry blood from elastic arteries to arterioles - active in vasoconstriction
|
|
|
arterioles arteries size & function
|
smallest - carry blood to capillaries - regulate blood flow to capillaries
|
|
|
veins carry blood from ____ back to ____
|
body - heart
|
|
|
blood in veins are low in ____
|
oxygen
|
|
|
venules empty into ____
|
veins
|
|
|
venules may contain ____
|
valves
|
|
|
capillaries are the ____ vessels, connect ____ to ____, & exchange ____ & ____ with tissue cells
|
smallest - arterioles - venules - nutrients - gases
|
|
|
sinusoids are vessels in place of ____ & can be found in (3)
|
capillaries - liver - spleen - bone marrow
|
|
|
vascular anastomoses are connections between vessels such as ____ & ____ without a ____ ____ in between
|
arteries - veins - capillary bed
|
|
|
three tunics (layers) in the arteries & veins
|
tunica interna (intima) - tunica media - tunica externa (adventitia)
|
|
|
tunica interna (intima) is the ____ layer & is made of ____ ____
|
innermost - simple squamous
|
|
|
tunica interna (intima) is continuous with the lining of the ____
|
heart
|
|
|
tunica media is the ____ layer & is made of ____ ____
|
middle - smooth muscle
|
|
|
tunica media is thicker in a____ than it is in a ____
|
artery - vein
|
|
|
tunica media constricts to regulate ____ ____ & ____ ____
|
blood pressure - blood flow
|
|
|
constriction of tunica media causes blood pressure to ____
|
increase
|
|
|
relaxation of tunica media causes blood pressure to ____
|
decrease
|
|
|
tunica externa (adventitia) is the ____ layer
|
outermost
|
|
|
tunica externa (adventitia) is thicker in a ____ than it is in a ____
|
vein - artery
|
|
|
tunica externa (adventitia) is made of ____ ____
|
collagen fibers
|
|
|
what is the vessels of the vessel called
|
vasa vasorum
|
|
|
does vasa vasorum get its blood supply from the same artery
|
no
|
|
|
capillaries have ____ walls made of ____ ____ cells
|
thin - simple squamous
|
|
|
capillaries is where exchange occurs between ____ & ____
|
blood - tissues
|
|
|
precapillary sphincters are ____-like & made of ____ muscle
|
rubber band - smooth
|
|
|
precapillary sphincters are located before the entrance of the ____ ____
|
capillary bed
|
|
|
precapillary sphincters control ____ flow to the ____ ____
|
blood - capillary beds
|
