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Anatomy of the Heart

Exercise 30 Lab Manual, pg 443
STUDY
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The heart is enclosed in a double-walled sac called the ___
Pericardium
____ is closely applied to the heart muscle.
epicardium
The heart is divided into how many chambers?
4 chambers
What is the name of the two RECEIVING chambers of the heart?
Left ATRIUM and right ATRIUM
The left ventricle charges blood into the _____, from which all systemic arteries of the body diverge to supply the body tissues.
aorta
TRUE OR FALSE:

Blood flows through the heart in one direction-- from the atria to the ventricles
TRUE
The right atrioventricular valve, or _____, prevents backflow into the right atrium when the right ventricle is contracting.
Atrioventricular valve is also known as the MITRAL
The heart serves as a double pump. The ___ side serves as the pulmonary circulation pump, shunting carbon dioxide-rich blood to the lungs
LEFT
The functional supply of the heart itself is provided by the _______ arteries
Coronary arteries
The major function of the cardiovascular system is:
Transportation.

Using blood as a transport vehicle, the system carries oxygen, digested food, cell wastes, electrolytes, etc. to the body's hemeostasis (balance of the body) to and from the body cells.
Which system does the following?:

Using blood as a transport vehicle, the system carries oxygen, digested food, cell wastes, electrolytes, etc. to the body's hemeostasis (balance of the body) to and from the body cells.
Cardiovascular system
Serous membrane, the outer loosely applied ______, which is attached at the heart apex to the diapragm
parietal pericardium
This fluid allows the heart to beat in a frictionless environment
Serous fluid
The serous parietal pericardium lines the loosely fitting superficial _____ composed of dense connective tissue.
Fibrous pericardium
Two microscopic features of cardiac cells that help distinguish them from other types of muscle cells are branching and ____
Intercalated discs
In the heart, the ___ ventricle has thicker walls and a basically circular cavity shape.
LEFT ventricle
Pericarditis (is the...)
Inflammation of the pericardium causes painful adhesions between the serous pericardial layers.
These adhesions interfere with heart movements.
The walls of the heart are composed primarily of cardiac muscle called _____
myocardium
Myocardium
Is the cardiac muscle that make up the walls of the heart
The ventricles and atria are lined by this thin serous endothelium called ____
endocardium
What is the function of the fluid that fills the pericardial sac?
Cushioning of the heart;

Reduce friction during heart activity.
Ventricular systole
the contraction, or period of contraction, of the heart, especially of the ventricles
the contraction, or period of contraction, of the heart, especially of the ventricles, is called ____
Ventricular systole