presentation1

The Cardiovascular

System:

The Heart

Transport system pump Using  blood as the transport medium, the

heart continually propels oxygen, nutrients, wastes, into the innerconnecting blood vessels that service body cells.

Heart:

The HeartHere you can see the size and parts of the heart

Size and Location

Flat baseIts apex points

inferiorly toward the left hip

apical impulse caused by the apex

of your beating heart contacting the

chest wall 

The lungs flank the heart laterally and partially obscure it

We depend on this dynamic organ for our very own life

• About the size of a fist, the hollow, cone-shaped heart is snugly enclosed within the mediastinum.

• The heart extends from the second rib tothe fifth inter-costal space.(About 5inches)

This is where the heart is locatedThis can give you an idea of what size the heart looks like

Coverings of the Heart

The heart is enclosed in a double-walled sac called the Pericardium.

The loosely fitting superficial part of this sac is called the Fibrous Pericardium. This dense connective tissue

protects , archors it to surrounding structures, and prevents overfilling of the heart with blood. 

Covering of the heartThese are the layers of the heart

Two Atria Two Ventricles The internal partition that divides the heart

longitudinally is called the Interatrial Septum, where it separates the atria, and the Interventricular Septum, where it separates the ventricles.

Chambers of the Heart

Chambers of the heartThis picture reveal the four chambers of the heart

The heart is two side-by-side pumps, each

serving a separate blood circuit. The blood vessels that carry blood to and from

the lungs form the Pulmonary Circuit, which serves gas exchange.

The blood vessels that carry the functional blood supply to and from all body tissues constitute the Systemic Circuit.

Pathway of blood

Pathway of blood these are the arteries and veins in which blood flow through to the heart

Conclusion

The Heart serve as one of the most important functions of the body. The ceaselessly beating heart has intrigued people for centuries. People has thought of the heart as the source of emotions. While these theories have proved false, we do know that the emotions affect the heart rate. Overall, the cardiovascular system provides the transport system "hardware" that keeps blood continuously

circulating to fulfill this critical homeostatic need.