Cardiovascular System

Histology 2016-2017
Department of Anatomy &Histology: Dr.Rajaa Ali
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Cardiovascular System
Introduction
The human body is made up of 70 to 80 trillion cells. All of these cells need to be fed oxygen and nutrients. These are provided by the cardiovascular system (CVS), (fig. ).
The body’s cells must also get rid of waste materials. The CVS does this job
too, at the same time it delivers oxygen and nutrients.

12.1 Major Organs of the Cardiovascular System
The heart pumps blood. It beats 60 to 90 times every minute for whole life.
Each beat pumps blood throughout the body. The blood flows through blood vessels.
12.2 Structures of the Heart
1. superior vena cava (VE-nah KAY-vah)
2. pulmonary semilunar valve (POOL-mon-ayr-ee seh-me-LOO-nar VALV)
3. right atrium (AY-tree-um)
4. tricuspid valve (trigh-KUS-pid)
5. right ventricle (VEN-trih-kul)
6. inferior vena cava (VE-nah KAY-vah)
7. septum (SEP-tum)
8. left ventricle (VEN-trih-kul)
9. bicuspid (bye-KUS-pid) or mitral (MY-tral) valve
10. aortic semilunar valve (ay-OR-tick seh-mee-LOO-nar VALV)
11. left atrium
12. aorta (ay-OR-tah)