Describe the gross structure and functions of the main body systems. P3

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Describe the gross structure and functions of the main body systems. P3

Introduction

I will try describing the gross structure and also the functions of the 10 systems in our body. A system is made up of different tissues and organs working together to perform a specific function in the body.

Cardiovascular System The cardiovascular system comprises the heart and blood vessels that circulate blood throughout the body, bringing oxygen and nutrients to muscles and organs and then returning it to the heart to be pumped again. The cardiovascular system includes:

* The heart: the pumping organ

* Blood vessels : a closed circuit of tubes

* Arteries : carry blood to all parts of the body

* Capillaries : carry blood from arteries to veins

* Veins : carry blood back to the heart

* Blood : consisting of liquid plasma and various blood cells

Position of the heart

The heart is a muscle about the size of a person's fist in the middle of the chest, tilted toward the left side, just under the sternum in a place called the mediastinum.