BIO 669 QUESTIONS AND ANSWERS LATEST UPDATE
(GRADED A+)
The circulatory systems is made of the
blood, heart, blood vessels, lymphatic vessels
heart chambers
right atrium and ventricle, left atrium and ventricle (larger)
heart wall layers
epicardium (outer) myocardium (middle muscle) endocardium (inner)
pumping phases
diastole (fill) systole (pump)
action potential SA normal rate
60-100
what affects cardiac performance/output?
preload, afterload, contractility
venules
smallest veins, receive capillary blood
Venous blood flow
venules, into larger and larger veins until it reaches venae cavae then right atrium
Vessel walls
tunica intima (inner) tunica media (middle) tunica externa (outer)
blood flow affected by?
b/p, restriction or restistance w/in vessels, viscosity, anatomic defects that cause turbulent or laminar
flow, distensibility of vessels
cardiac output factors
resistance and blood volume
where do lymphatic vessels run
same sheaths as arteries and veins
lymph drainage direction
(GRADED A+)
The circulatory systems is made of the
blood, heart, blood vessels, lymphatic vessels
heart chambers
right atrium and ventricle, left atrium and ventricle (larger)
heart wall layers
epicardium (outer) myocardium (middle muscle) endocardium (inner)
pumping phases
diastole (fill) systole (pump)
action potential SA normal rate
60-100
what affects cardiac performance/output?
preload, afterload, contractility
venules
smallest veins, receive capillary blood
Venous blood flow
venules, into larger and larger veins until it reaches venae cavae then right atrium
Vessel walls
tunica intima (inner) tunica media (middle) tunica externa (outer)
blood flow affected by?
b/p, restriction or restistance w/in vessels, viscosity, anatomic defects that cause turbulent or laminar
flow, distensibility of vessels
cardiac output factors
resistance and blood volume
where do lymphatic vessels run
same sheaths as arteries and veins
lymph drainage direction
