Heart Flashcards
The adult heart is shaped like a ____ and
approximately the size of a ____
blunt cone; closed fist
The adult heart has a mass of
250-350g
The heart is located in the ___ between two pleural cavities that surroun the lungs
thoracic cavity
midline partition
mediastinum
cavity of the heart
Pericardial cavity
main function of the heart
pump blood throughout the body
Beats approx. ___ times daily carrying ___L of
blood.
100,000;8000L
Covering of the Heart
The
Pericardium
A sac consisting of
fibrous and serous
pericardia.
Pericadium
Pericardium 2 layers:
- Fibrous Pericardium
- Serous Pericardium
+Parietal
+Visceral
Heart wall (3)
1.Epicardium
2.myocardium
3.endocardium
- Outermost layer of the heart
Epicardium
- Composed of simple squamous epithelium and an areolar
connective tissue(deep area)
Epicardium and Endocardium
Responsible for the overall contraction of heart necessary to
pump blood
Myocardium
Composed of cardiac muscle tissue.
Myocardium
Middle layer of the heart wall
Myocardium
- Innermost layer of the heart
- Composed of simple squamous epithelium and an areolar
connective tissue(deep area)
Endocardium