GMS 6530 (Med Pharm II - Cardio): PROBLEM SET 1

If you were to drink a liter of cola, the increased blood pressure due to increased blood volume would be detected by _______. Chemoreceptors Baroreceptors Baroreflexes Farva-receptors

Baroreceptors

In a healthy young adult, what happens to cardiac output when heart rate increases above 160 bpm? It increases. It decreases. It remains constant. There is no way to predict.

It decreases.

Which of the following is a negative inotrope? Na+ K+ Ca2+ both Na+ and K+

K+

Would stroke volume be expected to be largest in a patient with high or low blood pressure, everything else being equal? High Low

Low

Which statement best describes the process of arteriosclerosis? Buildup of plaques in blood vessels, restricting blood flow Stiffening of blood vessels due to loss of elastic fibers

Stiffening of blood vessels due to loss of elastic fibers

The force the heart must overcome to pump blood is known as ________. preload afterload cardiac output stroke volume

afterload

Venoconstriction increases which of the following? blood pressure within the vein blood flow within the vein return of blood to the heart all of the above

all of the above

Which portion of the ECG corresponds to repolarization of the atria? P wave QRS complex T wave atrial repolarization is masked by ventricular depolarization

atrial repolarization is masked by ventricular depolarization

In which septum is it normal to find openings in the adult? interatrial septum interventricular septum atrioventricular septum

atrioventricular septum

Closer to the heart, arteries would be expected to have a higher percentage of ________. endothelium smooth muscle fibers elastic fibers collagenous fibers

elastic fibers

The cardiovascular centers are located in which area of the brain? medulla oblongata pons mesencephalon (midbrain) cerebrum

medulla oblongata

Which chamber initially receives blood from the systemic circuit? Left atrium Left ventricle Right atrium Right ventricle

right atrium

Which of the following best describes veins? thick walled, small lumens, low pressure thin walled, large lumens, low pressure thin walled, small lumens, high pressure thick walled, large lumens, high pressure

thin walled, large lumens, low pressure

Which of the following lists the valves in the order through which the blood flows from the vena cava through the heart? Tricuspid, pulmonary semilunar, bicuspid, aortic semilunar Mitral, pulmonary semilunar, bicuspid, aortic semilunar Aortic semilunar, pulmonary semilunar, tricuspid, bicuspid Bicuspid, aortic semilunar, tricuspid, pulmonary semilunar

tricuspid, pulmonary semilunar, bicuspid, aortic semilunar

The endothelium is found in the ________. tunica interna tunica media tunica externa lumen

tunica interna