When Blood Pressure Falls Below Normal, Indicate What Happens to Each

When blood pressure falls below normal, indicate what happens to each of the following factors to restore the blood pressure back toward normal.
I.When blood pressure falls below normal, the rate of firing in the afferent nerves originating from the carotid sinus and aortic arch baroreceptors
a.increases
b.decreases
c.does not change

II.As a result of I, the medullary cardiovascular center responds by _________ the rate of firing in the sympathetic cardiac nerve.
a.increasing
b.decreasing
c.not changing

III.Also as a result of I, the cardiovascular center __________ the rate of firing in the parasympathetic nerve supply to the heart.
a.increases
b.decreases
c.does not alter

IV.Also as a result of I, the rate of firing in the sympathetic vasoconstrictor nerve is ________ by the cardiovascular center.
a.increased
b.decreased
c.not altered

V.As a result of II and III, the rate of firing of the SA node
a.increases
b.decreases
c.remains unchanged

VI.As a result of V, the heart rate
a.increases
b.decreases
c.remains unchanged

VII.As a result of IV,
a.arteriolar vasoconstriction occurs
b.arteriolar vasodilation occurs
c.there is no change in arteriolar radius
VIII.As a result of VII, total peripheral resistance
a.increases
b.decreases
c.remains unchanged

IX.Also as a result of IV,
a.venous vasoconstriction occurs
b.venous vasodilation occurs
c.there is no change in vein radii

X.As a result of IX, venous return
a.increases
b.decreases
c.remains unchanged

XI.As a result of X, end-diastolic volume
a.increases.
b.decreases
c.remains unchanged

XII.As a result of II and XI, stroke volume
a.increases
b.decreases
c.remains unchanged

XIII.As a result of VI and XII, cardiac output
a.increases
b.decreases
c.remains unchanged

XIV.As a result of VIII and XIII, blood pressure
a.increases to normal
b.decreases to normal
c.remains unchanged