chapter 30 notes Flashcards
stroke volume X heart rate
cardiac output
baroreceptors monitor blood pressure located in the
aorta and carotid sinus
if BP increases baroreceptors know->
goes to medulla
activate vagus nerve to activate parasympathetic
goes back to normal
if BP goes down afferent info->
medulla
cardiac nerve
releases norepinephrine
HR increases
cardiac output increases
normal
BP detected by baroreceptors
sends afferent info
to medulla
to sinal atrial node
para or sympathetic
normal hematocrit
45%
anemia
decrease RBC
increase viscosity
viscosity
thickens
low viscosity
thinner (decrease thickness)
vasoconstriction
pressure of blood increases
sympathetic system
big to small
vasodilation
pressure of blood decreases
parasympathetic system
small to big
high BP
blood vessel constrict
low BP
dilate
highest pressure at
aorta
lowest pressure at the
superior and inferior vena cava
parasympathetic does what to the heart
helps bring back to normal
too low of bP
sympathetic
vasoconstrict
chemoreceptors are located in
aorta
cornoid sinus
veins have one way valve that
only allow blood to flow in one direction
too high CO
high BP
too low CO
low BP
too high of O2
low CO2
high PH (basic)
too low O2
high CO2
low PH (acid)
exercise state
