Chapter 11
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