Lab Exam 1 - The Heart
Which layer of the heart wall is composed of the tissue shown here?
myocardium
Identify the highlighted structure(s).
trabeculae carneae
Identify the highlighted structure.
tricuspid valve
Identify the highlighted structures.
chordae tendineae
Identify the highlighted vessel.
middle cardiac vein
Identify the highlighted structures.
papillary muscles
The highlighted vessel returns blood from the body to which chamber of the heart?
right atrium
What structure is highlighted?
right atrium
Identify the highlighted vessel.
right coronary artery
Identify the highlighted vessel.
small cardiac vein
Identify the highlighted structure.
aortic semilunar valve
Identify the three branches of the highlighted vessel.
brachiocephalic trunk, left common carotid artery, left subclavian artery
Identify the highlighted structures.
cardiac muscle cells
Identify the highlighted artery.
circumflex
The highlighted structure is a remnant of which structure in the fetus?
ductus arteriosus
Identify the highlighted vessel.
great cardiac vein
Identify the highlighted structures.
intercalated discs
Identify the highlighted structure.
pulmonary trunk
Identify the highlighted vessels.
right pulmonary veins
Which type of tissue lines the lumen of this vessel?
simple squamous epithelium
Which layer of an elastic artery contains the largest amount of elastic fibers?
tunica media
Is the highlighted structure closed during atrial systole, or during ventricular systole?
ventricular systole
How do the highlighted valve cusps function during a ventricular contraction?
They are held closed by the chordae tendineae to prevent blood from flowing back into the right atrium.
