|
Creado por Diamond Sapphire
hace casi 4 años
|
|
Pregunta | Respuesta |
What are the layers of the heart wall? | 1. Endocardium 2. Myocardium 3. Epicardium |
The inner layer of the heart wall lining the ventricles and atria completely, and also covers the cardiac valves | endocardium |
The middle layer of the heart wall and the thickest layer; primarily composed of cardiac muscle fibers | Myocardium |
The outermost layer of the heart wall; visceral layer of pericardium | epicardium |
Endothelium: continuous simple squamous epithelium subendothelium: dense irregular CT subendocardium: loose CT that contains small vessels, nerves, and purkinje fibers | Endocardium |
this node entrains the pace of the heart | S-A node |
this node relays the pace | A-V node |
purkinje fibers end in ___ | ventricles |
T/F Purkinje fibers have no contractile function | True |
___ is the principal tissue of the heart | myocardium |
the cardiac skeleton is made of what 3 parts? | Fibrous rings Fibrous triangle Fibrous part of the interventricular septum |
What is the purpose of cardiac valves? | to prevent backflow of blood |
cardiac valves are covered by ___ on both sides | endocardium |
What are the 3 main blood vessels? | - Arteries (away from the heart) - Veins (to the heart) - Capillaries (connects arteries and veins; nutrient/waste transfer site) |
What are the 3 layers of a typical blood vessel? | 1. Tunica intima/interna 2. Tunica media 3. Tunica externa/adventitia |
Tunica thickening by the cholesterol deposit induced pathological alteration during ___ | atherosclerosis |
the vasa vasorum and nervi vasorum are found in which layer of blood vessels? | Tunica externa/adventitia |
The most prominent and thickest layer of arteries is the ___ ___ | tunica media |
T/F in elastic arteries the IEL is prominent and easy to see | False; IEL is prominent in muscular arteries |
which type of artery has a tunica media that is rich in smooth muscles: elastic or muscular? | muscular |
T/F the tunica adventitia is relatively the same size as the tunica media of muscular arteries | True. This is not true of elastic arteries, however :) |
these small arteries contain roughly 1-3 layers of smooth muscle in their wall; feed into capillary beds | arterioles |
compared to the lumen of arteries, a vein's lumen is ___ and more ___ | larger, irregular |
in veins, it is typical for the tunica ___ to be the most prominent layer | adventitia/externa |
capillaries have a tunica ___ only | intima |
What are the 3 types of capillaries | 1. continuous 2. fenestrated (complete basement membrane; small pores in endothelial cells) 3. sinusoid (incomplete basement membrane; large pores in endothelial cells) |
Where are continuous capillaries typically found? | Brain, CT, and muscle tissue |
Fenestrated capillaries are typically found where? | kidneys, intestine, endocrine glands, etc. |
is this an artery or a vein? How can you tell? | Artery; tunica media is large and full of elastic fibers |
is this an artery or a vein? how can you tell? | Vein; thick tunica adventitia and the lumen is large and irregular |
Is this a muscular artery or an elastic artery? How can you tell? | Muscular artery; very noticeable internal elastic lamina present in tunica intima |
What is pictured here? How can you tell what this is? | Arteriole; very small and only a few layers of smooth muscle cells |
Artery or vein? How can you tell? | Vein; large, irregular lumen and the presence of a valve |
What are the black arrows pointing at within this cardiac muscle? | Purkinje fibers |
¿Quieres crear tus propias Fichas gratiscon GoConqr? Más información.