Chapter 11

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Which of the following increases heart rate:

epinephrine

Which fetal shunt bypasses the lungs by directly connecting the right atrium and the left atrium?

foramen ovale

Which of these events is NOT associated with ventricular systole

heart is relaxed

What structure divides the left from the right ventricle?

interventricular septum

When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the:

left ventricle to the left atrium

Pulmonary circulation involves blood flow to and from the heart and the:

lungs

Which of the following blood vessels carries oxygenated blood

pulmonary vein

The sinoatrial node is located in the

right atrium

The tricuspid valve is located between the

right atrium and right ventricle

Which of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart

sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers

Deoxygenated blood is returned to the right side of the heart by the

superior and inferior vena cavae

Pulmonary veins:

transport oxygenated blood to the heart

The right AV is called ____

tricuspid valve

Which one is the correct sequence going from the outermost to the innermost layer of a blood vessel wall:

tunica externa, tunica media, tunica intima

Which of the following vessels has the lowest blood pressure?

venae cavae

The mitral valve is normally closed:

when the ventricle is in systole

Chest pain resulting from the loss of oxygen to heart cells is called:

angina pectoris

Which valve guards the base of the aorta and opens when the ventricles are contracting?

aortic semilunar valve

The path of blood flow within the systemic vascular system is:

arteries, arterioles, capillary beds, venules, veins

Which of the following arteries supplies the intestines:

Superior mesenteric artery


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