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The Cardiovascular System

 The cardiovascular system can be divided into four main parts: 1) The respiratory system; 2) The Heart; 3) The Blood; 4) The Blood vessels

The Respiratory System

The respiratory system consists of the nasal cavity , the pharynx, the larynx, the trachea, the bronchi, and the lungs (the main organ of respiration ).

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The Cardiovascular System: The heart

The heart is a four chambered muscular pump, about the size of a clenched fist, and is responsible for pumping blood around the human body.

>> Read more about the role of the heart in the cardiovascular system

The Cardiovascular System: Blood

Blood is made up of a number of different cells (red blood cells and white blood cells), fragments of cells, various nutrients and hormones and liquid. An adult will have about 9 pints of blood within their body.

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The Cardiovascular System: Blood Vessels

Blood vessels are responsible for the transport of blood, fluids, and hormones around the body. There are three main types of blood vessels: 1) Arteries; 2) Veins; 3) Capillaries.

>> Read more about the functions of blood vessels