heart and vessels review questions
Which of the following is NOT a characteristic of an artery?
Arteries contain valves to prevent backflow of blood.
Which of the following is TRUE regarding the coronary vessels of the heart?
They emerge from the base of the ascending aorta
Which of the following is the function of the papillary muscles?
They prevent valve inversion into the atria.
Which of the following statements regarding the cardiovascular system is TRUE?
When the heart beats, the atria contract first, followed by the ventricles.
Which describes the inferior, pointed tip of the heart that is formed mainly by the left ventricle?
apex
The myocardium _____.
consists of multiple, interlocking layers of cardiac muscle tissue
Which structure is a short, muscular vessel between the pulmonary and aortic trunks, found during development?
ductus arteriosus
Which layer of the heart consists of simple squamous epithelium tissue that is continuous with the endothelium of the attached greater vessels?
endocardium
What is the name of the interatrialopening that acts as a valve and allows blood to flow freely from the right atrium to the left atrium in fetal development?
foramen ovale
At birth, as pressure rises in the _____, a valvular flap closes the _____ and completes the cardiovascular remodeling.
left atrium; foramen ovale
Which of the following vessels sends blood to the lungs from the right ventricle?
pulmonary artery
Which of the following contains the fetal remnant of the foramen ovale?
right atrium
Which of the following receives deoxygenated blood from the systemic circuit via the superior and inferior vena cava?
right atrium
Blood in the aortic arch branches directly into all of the following except the _____.
right common carotid artery
The entrance to each capillary is "guarded" by a band of _____ muscle known as the _____.
smooth metarteriole
The larger arteries typically consist of thick layers that have their own blood supply. The vessels that supply blood to large vessels are _____.
vasa vasorum
