# data[].attributes.headline
What are the 5 major parts of the circulatory system?

# data[].attributes.subject
What are the 5 major parts of the circulatory system?

# data[].attributes.body
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells

# data[].attributes.headline
What are the 7 steps of the circulatory system?

# data[].attributes.subject
What are the 7 steps of the circulatory system?

# data[].attributes.body
1) body –> 2) inferior/superior vena cava –> 3) right atrium –> 4) tricuspid valve –> 5) right ventricle –> 6) pulmonary arteries –> 7) lungs –> 8) pulmonary veins –> 9) left atrium –> 10) mitral or bicuspid valve –> 11) left ventricle –> 12) aortic valve –> 13) aorta –> 14) body.

# data[].attributes.body
The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.

# data[].attributes.body
The lungs are surrounded by the pleura, a membrane with two layers. The space between these two layers is called the pleural cavity. A slippery liquid called pleural fluid acts as a lubricant to reduce friction during breathing.

# data[].attributes.body
Carbon dioxide moves from the blood into the air inside the alveoli. At the same time, oxygen moves from the air into the blood in the capillaries.

# data[].attributes.body
The respiratory and circulatory systems work together in that the respiratory system introduces oxygen to the body and transfers it into the blood stream while the circulatory system transports the oxygenated blood to the other organs.

# data[].attributes.headline
Blood low in oxygen flows through the lungs 

# data[].attributes.subject
Blood low in oxygen flows through the lungs 

# data[].attributes.body
The pulmonary artery and its branches deliver blood to the capillaries that surround the alveoli. This blood is rich in carbon dioxide and low in oxygen.

# data[].attributes.headline
HOW DOES THE RESPIRATORY AND CIRCULATORY SYSTEM WORK TOGETHER?

# data[].attributes.subject
HOW DOES THE RESPIRATORY AND CIRCULATORY SYSTEM WORK TOGETHER?

# data[].attributes.body
The circulatory and respiratory systems collaborate to move blood and oxygen around the body. The trachea, bronchi, and bronchioles transport air into and out of the lungs. The pulmonary arteries and veins link to the heart and transport blood into and out of the lungs. These systems work together to carry out their functions, and the body does its work.

# data[].attributes.body
Your lungs have about 150 million alveoli. Normally, your alveoli are elastic, meaning that their size and shape can change easily. Alveoli are able to easily expand and contract because their insides are coated with a substance called surfactant. Surfactant reduces the work it takes to breathe by helping the lungs inflate more easily when you breathe in. It also prevents the lungs from collapsing when you breathe out.

Each of these alveoli is made up of a mesh of tiny blood vessels called capillaries. The capillaries connect to a network of arteries and veins that move blood through your body.

# data[].attributes.body
Air first enters your body through your nose or mouth, which moistens and warms the air since cold, dry air can irritate your lungs. The air then travels past your voice box and down your windpipe. Rings of tough tissue, called cartilage, acts as a support to keep the bronchial tubes open.

Inside your lungs, the bronchial tubes branch into thousands of thinner tubes called bronchioles. The bronchioles end in clusters of tiny air sacs called alveoli.

# data[].attributes.body
The airways are pipes that carry oxygen-rich air to the alveoli in your lungs. They also carry the waste gas carbon dioxide out of your lungs. The airways include these body parts:

Mouth

Nose and linked air passages called the nasal cavity and Sinus

Larynx (voice box)

Trachea (windpipe)

Tubes called bronchial tubes, or bronchi, and their branches

Smaller tubes called bronchioles that branch off of the bronchial tubes

# data[].attributes.body
The circulatory system, which is made up of the heart and blood vessels, supports the respiratory system by bringing blood to and from the lungs. The circulatory system helps deliver nutrients and oxygen from the lungs to tissues and organs throughout the body. It also helps remove carbon dioxide and waste products. Other body systems that work with the respiratory system include the nervous system, lymphatic system, and immune system.

# data[].attributes.body
Your lungs are on each side of your heart, inside your chest cavity. They are the main organs of the respiratory system. The right lung is divided into three lobes (sections), and the left lung is divided into two lobes. Your left lung is slightly smaller than your right lung, since your heart takes up some space on the left side. When you breathe in, air enters your airways and travels down into the air sacs, or alveoli, in your lungs. This is where gas exchange takes place.