Chapter 14: Heart
The internal C-shaped crest of the right atrium which indicates the openings for the Superior vena cava and Inferior vena cava is
Crista Terminalis
The right and left coronary arteries arise from the descending aorta.
False
which of the following veins does not deliver blood directly into the right atrium?
Great cardiac veins
The heart chamber that receives oxygenated blood from the pulmonary veins.
Left Atrium
which of the following vessels does not carry oxygen-poor blood to the heart?
Pulmonary Vein
The heart chamber that receives blood from the superior vena cava, inferior vena cava, and coronary sinus.
Right Atrium
Oxygen-poor blood returns to the heart and enters the
Right atrium
A drop of blood returning to the heart from the head region would enter the heart through which vessel?
Superior Vena Cava
Oxygen-rich blood returning from the lungs enters the left atrium through two right and two left pulmonary veins.
True
A specific coronary vessel that lies in the anterior interventricular sulcus is the
anterior interventricular artery/Left anterior descending artery (LAD)
During left ventricular systole, blood exits the heart to enter the
aorta
Cells of the conducting system located between the AV node and bundle branches.
atrioventricular bundle
semilunar valves are located
between the ventricles and the great arteries.
Threadlike structures of the endocardium that prevent prolapse of the atrioventricular valves.
chordae tendineae
Blood is carried to capillaries in the myocardium by way of the
coronary arteries
The auricles are
earlike flaps on the surface of the atria.
The inner endothelial layer that lines the heart is the
endocardium
The middle cardiac vein lies alongside the anterior interventricular artery.
false
During ventricular systole, blood is
forced from the ventricles into the aorta and pulmonary trunk.
There is a foramen ovale in the skull and another one in the heart. The foramen ovale in the heart gives rise to the
fossa ovalis
This blood vessel is located in the anterior interventricular sulcus.
great cardiac vein
Blood within the pulmonary veins returns to the
left atrium
The heart chamber that pumps oxygenated blood around the systemic circuit is the
left ventricle
The heart chamber with the thickest wall is the
left ventricle
Heart Valve with two cusps
mitral valve
Of the three layers of the heart wall, the layer that contains the cardiac muscle is the
myocardium
Contraction of these structures tightens the chordae tendineae, preventing valve prolapse.
papillary muscles
What structures anchor the chordae tendineae?
papillary muscles
The valve responsible for preventing backflow of blood from the lungs into the heart.
pulmonary semilunar valve
The right ventricle pumps blood into which vessel?
pulmonary trunk
A specific coronary vessel that lies in the coronary sulcus is the
right coronary artery
The pericardial cavity lies between
the parietal pericardium and the visceral pericardium
Which of the following structures is not found in the left ventricle?
the pectinate muscles
The semilunar valves are closed when
the ventricles are relaxing.
If the beating heart makes a "lub-dup" sound, the "dup" sound is caused by
vibrations that result from the semilunar valves slamming shut
The epicardium is the same as the
visceral layer of serous pericardium.
The tricuspid valve is closed
when the ventricle is in systole.
