Blood Flow and Pressure Quiz

Vessel length is the most important regulator of blood flow.

• True

• False

Your blood pressure decreases below normal range. Which of the following will not occur?

• Increased stimulation of the vasomotor center

• Decreased stimulation of baroreceptors in the carotid sinuses & aortic arch

• Decreased sympathetic input via cardiac accelerator nerve

• Decreased parasympathetic input via vagus nerve

The systemic BP when the blood returns to the right atrium of the heart is approximately:

• 15 mm Hg

• 0 mm Hg

• 110 mm Hg

• 40 mm Hg

How does ADH affect blood pressure?

• Decreases it by promoting urination

• Increases it by vasodilation

• Increases it by water retention and vasoconstriction

• Has no effect on blood pressure

Renin converts

• Angiotensinogen to angiotensin I

• Angiotensin I to angiotensin II

• Angiotensinogen to angiotensin II

• Angiotensin II to angiotensin I