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NHLBI

How the Lungs Work - What Breathing Does for the Body

respiratory system 

Breathing involves two phases: breathing in and breathing out. Your lungs deliver oxygen and remove carbon dioxide from your blood in a process called gas exchange. Gas exchange happens in the capillaries surrounding the alveoli, where the oxygen that is breathed in enters the circulatory system and carbon dioxide in the blood is released to the lungs and then breathed out. If you have problems breathing, gas exchange may be impaired, increasing the risk of serious health problems.

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NHLBI

How the Lungs Work - Keeping Your Lungs Healthy

respiratory system 

You can take steps to help protect your lungs from injury or disease, including quitting smoking and avoiding secondhand smoke, aiming for a healthy weight, being physically active, and limiting exposure to air pollution.

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NHLBI

How the Lungs Work - How Your Body Controls Breathing

respiratory system 

The body’s muscles and nervous system help control your breathing. The lungs are like sponges; they cannot move on their own. Muscles in your chest and abdomen contract, or tighten, to create space in your lungs for air to flow in. The muscles then relax, causing the space in the chest to get smaller and squeeze the air back out. Your breathing usually does not require any thought, because it is controlled by the autonomic nervous system, also called the involuntary nervous system.

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NHLBI

How the Lungs Work - The Respiratory System

respiratory system 

The respiratory system helps you breathe. The main parts of the respiratory system are the lungs, the airways, and the muscles that enable breathing. The circulatory system, which is made up of the heart, veins, arteries, and capillaries, brings blood to and from the lungs and delivers nutrients and oxygen to tissues of the body while removing carbon dioxide and waste products. Other body systems that work with the respiratory system include the nervous system, lymph system, and immune system.

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CDC

Human Parainfluenza Viruses | Transmission of HPIVs | CDC

cough  seasonal  fever  infants  viruses  older adults  transmission  pneumonia  respiratory illness  bronchitis  runny nose  ear infection  bronchiolitis  young children  Human Parainfluenza Viruses  sneezing  croup  parainfluenza viruses  respiratory system  respiratory tract 

Human parainfluenza viruses (HPIVs) usually spread from person to person through air by coughing and sneezing, touching...

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CDC

Human Parainfluenza Viruses | Clinical Overview of HPIVs | CDC

infants  CDC  older adults  pneumonia  bronchitis  bronchiolitis  Human Parainfluenza Viruses  hpiv-1  hpiv-2  hpiv-3  hpiv-4  paramyxoviridae  croup  parainfluenza viruses  respiratory system  respiratory tract  hpiv  immunocompromised  aryngotracheobronchitis  types of HPIVs 

Human parainfluenza viruses (HPIVs) belong to the Paramyxoviridae family. There are four types (1 through 4) and two subtypes (4a and 4b) of HPIVs.

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CDC

Human Parainfluenza Viruses | Symptoms and HPIV Illnesses | CDC

cough  fever  infants  CDC  older adults  pneumonia  respiratory illness  bronchitis  runny nose  ear infection  bronchiolitis  young children  Human Parainfluenza Viruses  croup  parainfluenza viruses  respiratory system  respiratory tract  Human Parainfluena Disease  hpiv  hpivs 

Human parainfluenza viruses (HPIVs) commonly cause upper and lower respiratory illnesses. After infected, takes about 2-7 days before develop symptoms: fever, runny nose, and cough.

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