Cardiovascular System, Regulation of blood pressure

Regulation of blood pressure MCQs

1. Choose one true statement;
a. the carotid sinus is found in the arch of the aorta
b. the carotid sinus contains a lot of chemoreceptors
c. the carotid sinus is found in the external carotid artery
d. the carotid sinus is found in the internal carotid artery
e. none of the above are correct

2. Choose one true statement;
a. baroreceptors from the aorta travel to the cardiac centre via cranial nerve IX
b. baroreceptors from the carotid sinus travel to the cardiac centre via cranial nerve X
c. increase in blood pressure will cause a reduction in the numbers of action potentials generated by the baroreceptor
d. lowered blood pressure will cause increased stretching of the walls of the carotid sinus
e. none of the above are correct

3. Reduced frequency coding of the inputs into the cardiovascular centre will result in;
a. increased sympathetic outflow
b. increased parasympathetic outflow
c. reduced heart rate
d. reduced strength of inotropic contraction of the myocardium
e. dilation of systemic arterioles

4. Vasoconstriction of systemic arterioles will;
a. decrease blood pressure
b. increase tissue perfusion
c. increase systemic vascular resistance
d. decrease systemic vascular resistance

Видео Cardiovascular System, Regulation of blood pressure канала Dr. John Campbell