cardiovascular (2) Flashcards
What is main function of platelets
aid in clotting
How do platelets clump
releasing chemical factors related to clotting
4 general functions of blood
serves as vehicle
aids in temperature control
protect body by providing immunity
blood clotting
What is the intima
inner smooth epithelial layer of blood vessel
What is media
middle layer of smooth muscle tissue
What are the three types of blood vessels
veins, arteries, capillaries
What do arteries do
Carry blood away from the heart
What do veins do
carry blood toward chamber of heart
What is purpose of capillaries
thin walls so exchange can take place between blood and tissue cells
what are the 3 layers in walls of heart chambers
endocardium - smooth epithelium
myocardium - cardiac muscle tissue
epicardium - epithelium
What are the 4 chambers of the heart
L & R atrium (upper)
L & R ventricle (lower)
What are the walls separate LR atria; LR ventricle
interatrial septum
interventricular septum
Compare walls of atrial and ventricle
Atrial walls very thin
R. Ventr. is much thicker than atria
L. Ventr. is 3-5x thicker than R. ventr.
What is the valve betw. atrium and ventricle (on both sides)
atrioventricular valve (A-V valve)
What is the right av valve
tricuspid valve
