Ch 57: Heart and Great Vessels

Question 1

The heart is a hollow, conical (MB1) organ with muscular walls. In the adult, it
measures approximately __cm in length, ___ cm in width, and __cm in
thickness.

Answer 1

The heart is a hollow, conical (MB1) organ with muscular walls. In the adult, it
measures approximately 12 cm in length, 8 to 9 cm in width, and 6 cm in
thickness.

Question 2

The apex is located roughly ___to the
left of midline in the fifth intercostal space, and the base is at the level of the
third costal cartilage.

Answer 2

The apex is located roughly 8 cm to the
left of midline in the fifth intercostal space, and the base is at the level of the
third costal cartilage.

Question 3

The roots of the GVs, along
with the heart, are encompassed by the ____. In combination with
the epicardium, this fibrous layer provides a smooth cavity in which the heart
can pump freely.

Answer 3

The roots of the GVs, along
with the heart, are encompassed by the parietal pericardium. In combination with
the epicardium, this fibrous layer provides a smooth cavity in which the heart
can pump freely.

Question 4

Externally the pericardium is adherent to but separate from the meidastinal pleura, creating a potential space through which the ___ nerve traverses

Answer 4

phrenic