Overview of the Heart Flashcards
1
Q
location of the heart
A
- left of midline, deep to sternum, in mediastinum
- between ribs 2-6 anteriorly
- between vertebrae T5-T8 posteriorly
2
Q
pericardium
A
restricts heart movements within thorax
3
Q
fibrous pericardium
A
tough outer sac
4
Q
serous pericardium
A
composed of parietal and visceral layers
5
Q
pericardial cavity
A
contains serous fluid
6
Q
pericardium
A
serous membrane around heart
7
Q
parietal pericardium
A
lines internal surface of the body wall
8
Q
visceral pericardium
A
covers external surface of the heart
9
Q
pericardial cavity
A
serous fluid -> reduces friction between moving organs
10
Q
epicardium (superficial layer)
A
visceral layer of serous pericardium and areolar connective tissue
11
Q
myocardium (intermediate layer)
A
cardiac muscle; thickest of the three layers
12
Q
endocardium (deep layer)
A
internal surface of heart chambers; simple squamous epithelium and areolar connective tissue
