gross anatomy of heart and pericardial sac Flashcards Preview

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Flashcards in gross anatomy of heart and pericardial sac Deck (13):
1

the normal volume of pericardial fluid within the pericardial cavity of an adult is about

30-60 mL

2

what is the importance of the pericardial fluid?

important in reducing friction between the beating heart and the pericardial sac

3

thoracic inlet

superior portion of mediastinum

4

diaphragm

inferior portion of mediastinum

5

lung

lateral portion of mediastinum

6

sternum

anterior portion of mediastinum

7

vertebral column

posterior portion of mediastinum

8

the 4 chamber structure permits

-the separation of oxygenated and deoxygenated blood which is critical for meeting the o2 demands of tissues
-pressure differentials between circuits

9

mixing of blood is devastating and can be seen when...

fetal shunts don't close

10

the inability to create or regulate pressure differentials is devastating and can be seen when ....

in heart failure

11

functions of the pericardium (sac and fluid)

prevents heart from sticking
support during relaxation

12

cardiac tamponade

too much fluid in the pericardial sac
approximately 50mL

13

what would cause an increase in pericardial fluid within the pericardial cavity?

clogged lymph vessels
trauma