Circulatory System

-         The circulatory system is made up of blood vessels that carry blood away from and towards the heart.

The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

What Are the Parts of the Circulatory System?

o   The pulmonary circulation is a short loop from the heart to the lungs and back again.

The pulmonary artery is a big artery that comes from the heart. It splits into two main branches, and brings blood from the heart to the lungs. At the lungs, the blood picks up oxygen and drops off carbon dioxide. The blood then returns to the heart through the pulmonary veins.

o   The systemic circulation carries blood from the heart to all the other parts of the body and back again.

Next, blood that returns to the heart has picked up lots of oxygen from the lungs.

Once the blood is back in the heart, it needs to re-enter the pulmonary circulation and go back to the lungs to drop off the carbon dioxide and pick up more oxygen.

What Are the Parts of the Heart?

The heart has four chambers — two on top and two on bottom:

o   The two bottom chambers are the right ventricle and the left ventricle. These pump blood out of the heart.

o   The two top chambers are the right atrium and the left atrium. They receive the blood entering the heart.

The parts of Circulatory System are:

o   Arteries

o   Veins

o   Capillaries

Circulatory System Working With Other Systems:

o   Nervous System:  The nervous system is made up of the brain, spinal cord and nerves.  The brain sends messages to the heart telling it to beat.

o   Digestive System: The digestive system breaks down foods and takes out needed nutrients.  These nutrients are put into the blood stream for the cells to use as energy.

o   Muscular System: The heart is a muscle.  The expanding and contracting of this muscle is what pumps blood throughout the body.

o   Respiratory System:  The respiratory system is how oxygen is brought into the body.  It enters through the lungs into the alveoli.  From there it is sent through blood vessels into the blood stream for the body to use.

o   Endocrine System:  The endocrine system is where hormones are produces.  Hormones and other chemicals produced by these glands use the circulatory system to travel to needed parts of the body.

Illnesses that can affect the circulatory system:

o   Heart Disease.

Cardiovascular disease is a group of problems that occur when the heart and blood vessels aren't working the way they should.

o   Strokes.

Strokes often occur when a blood clot blocks an artery in the brain and reduces the blood supply. They also can happen when a blood vessel in the brain breaks open. Both events keep blood and oxygen from reaching the brain. As a result, parts of the brain are likely to be damaged.

o   Heart failure

Heart failure occurs when the heart muscle is weakened or damaged.

THANKS FOR YOUR ATTENTION AND I WAIT FOR YOUR COMMENTS.