CIRCULATORY SYSTEM

HEART FACTS

• Your adult heart beats about 100,000 times each day
• Heart disease isn’t only the number one killer of men, it’s also the top killer for women
• Your heart rate drops while you sleep.
• Your activity level is the greatest potential risk factor for heart disease

Heart
The heart is the most important organ in the entire body. If we did not have the heart we will die because there would be no way for us to transport blood around through the body

Structure of the heart
The heart is divided into four chambers consisting of two atria and two ventricles; the atria (atrium) receive blood, while the ventricles pump blood.
The right atrium receives blood from the superior and inferior vena cavas and the coronary sinus; blood then moves to the right ventricle where it is pumped to the lungs.
The lungs re-oxygenate the blood and send it to the left atrium.
Blood moves from the left atrium to the left ventricle via the bicuspid valve; blood is pumped out of the left ventricle to the aorta, which sends blood to the organs and muscles of the body.

How is the respiratory system connected to the circulatory system?

Well because it is the only way for the blood to gain oxygen

KIDNEYS

KIDNEY FACTS

• The blood flow in kidneys is higher than the blood flow in heart, liver and brain.
• Kidneys are no bigger than a standard computer mouse or a cell phone.
• adults, kidneys form only 0.5% of the entire body weight
• In a single hour, kidneys receive around 120 pints of blood

Kidney's are the organ that filters the blood and getting rid of all the bacteria and the extra water. There shape is more like jelly bean then anything

Structure
The kidneys regulate the balance of ions known as electrolytes in the blood, along with maintaining acid base homeostasis. They also move waste products out of the blood and into the urine, such as nitrogen-containing urea and ammonium. Kidneys also regulate fluid balance and blood pressure. They are also responsible for the reabsorption of water, glucose, and amino acids.The kidneys also make an important enzymes

ARTERIES CAPILLARIES VEINS

ARTERIES CAPILLARIES AND VEINS FACTS

• Your blood vessels could circle the globe.
• They carry a million barrels of blood in a lifetime.
• Obesity takes a toll on the blood vessels.
• Your blood vessels might get a boost from chocolate. E

Arteries
Arteries carry blood away from the heart. Pulmonary arteries transport blood that has a low oxygen content from the right ventricle to the lungs. Systemic arteries transport oxygenated blood from the left ventricle to the body tissues. Blood is pumped from the ventricles into large elastic arteries that branch repeatedly into smaller and smaller arteries until the branching results in microscopic arteries called arterioles. The arterioles play a key role in regulating blood flow into the tissue capillaries

Capillaries
Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins). The primary function of capillaries is the exchange of materials between the blood and tissue cells.

Veins
Veins carry blood toward the heart. After blood passes through the capillaries, it enters the smallest veins, called venules. From the venules, it flows into progressively larger and larger veins until it reaches the heart. In the pulmonary circuit, the pulmonary veins transport blood from the lungs to the left atrium of the heart. This blood has a high oxygen content because it has just been oxygenated in the lungs. Systemic veins transport blood from the body tissue to the right atrium of the heart. This blood has a reduced oxygen content because the oxygen has been used for metabolic activities in the tissue cells.

BIBLIOGRAPHY

• https://www.niddk.nih.gov/health-information/kidney-disease/kidneys-how-the... http://www.webmd.com/heart/picture-of-the-arteries#1 https://www.heartfoundation.org.au/your-heart https://www.britannica.com/science/blood-vessel

THE END