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ECHOCARDIOGRAPHY - ANATOMY/LOCATION EXAM
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ECHOCARDIOGRAPHY - ANATOMY/LOCATION EXAM...
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ECHOCARDIOGRAPHY - ANATOMY/LOCATION EXAMPISA = - ANSWER Proximal Isovelocity Surface Area 2π*r squared.
FLOW = -- ANSWER Velocity (shell) * PISA
If the radius of a vessel segment is reduced by 50%, the resistance increases by... -
ANSWER 16 times. Because the radius is to the fourth power, reducing the radius
by 50% causes the resistance to grow to the fourth power, or 16 times... x * x * x *
x
Hydrostatic Pressure - ANSWER The pressure at any given place in a non-moving
(static) fluid is known as hydrostatic pressure.
The heart pumps blood via approximately 100,000 kilometers (60,000 miles) of
blood arteries.
Mediastinum - ANSWER The space in between the lungs.
Mediastinal organs include the heart, large veins and arteries, the trachea, the
esophagus, bronchi, and lymph nodes.
Heart Size - Answer 12 cm long, 9 cm wide, and 6 cm thick... roughly the size of a
fist.
Heart Apex - Answer The pointed end of the heart points anteriorly, inferiorly, and
to the left.
Heart Base - Answer The largest section of the heart is pointed posteriorly,
superiorly, and to the right.
, The anterior surface of the heart extends deep into the sternum and ribs.
The inferior surface of the heart is located between the apex and the right border
and is mostly supported by the diaphragm.
Right Border of the Heart - Answer Faces the right lung and extends from the
inferior to the base.
Left Border of the Heart
AKA - Pulmonary Border - Answer. Faces the left lung and spans from base to
apex.
When do endocardial cushions develop? - ANSWER Around 5 weeks, the
endocardial cushions of the atrioventricular canal and the conotruncal ridges
develop.
When does septation of the atria develop? In the sixth and seventh weeks, the atria,
AV canal, ventricles, and conotruncus continue to septate, completing the fetal
heart's shape. In the sixth week, the foramen secundum occurs, the foramen
primum is closed, the AV canal is divided, and the conotruncal septum forms. In
the seventh week, the atrial septum secundum and foramen ovale emerge, while the
interventricular septum's membrane component obliterates the secondary
interventricular foramen. The endocardial cushions and conotruncal ridges fuse to
form the membrane interventricular septum.
Identify the components of the systemic circulation vessels. - ANSWER Aorta,
arteries, arterioles, capillaries, venules, veins, and the vena cava.
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