Nutrition and Respiratory Health—Feature Review

1. Introduction

Nutrition and the respiratory system.
Effect of fruit and vegetable intake on oxidative stress and inflammation in COPD: The American Thoracic Society also reports that apples and tomatoes particularly seemed to reduce the incidence of respiratory illness. Vitamin D in Fetal Development: However case control studies in children have not found a relationship with selenium levels or intake with asthma related outcomes [ 18 , ]. Gary Thibodeau in his book, "Anatomy and Physiology. A review of the epidemiological evidence.


Top 10: Gasp-worthy Facts about the Respiratory System

Lungs are the only human organ that can float in water! Each of your lungs contains about million balloon-like structures called alveoli, which replace the carbon-dioxide waste in your blood with oxygen. When these structures are filled with air, they make lungs float. Yawning is a result of your body not taking in enough oxygen from the air, which causes a shortage of oxygen in our bodies.

The brain senses this shortage of oxygen and sends a message that causes you to take a deep long breath a yawn! The surface area of an adult's lungs is roughly the same size as a tennis court! If all the alveoli in both lungs were flattened out, they would have a total area of about square feet, Your left lung is smaller than your right which leaves room for your heart! A major organ of the respiratory system, each lung houses structures of both the conducting and respiratory zones.

The main function of the lungs is to perform the exchange of oxygen and carbon dioxide with air from the atmosphere. To this end, the lungs exchange respiratory gases across a very large epithelial surface area—about 70 square meters—that is highly permeable to gases. The lungs are pyramid-shaped, paired organs that are connected to the trachea by the right and left bronchi; below the lungs is the diaphragm, a flat, dome-shaped muscle located at the base of the lungs and thoracic cavity.

Each lung is composed of smaller units called lobes. Fissures separate these lobes from each other. The right lung consists of three lobes: The left lung consists of two lobes: The major function of the lungs is to perform gas exchange, which requires blood flowing through the lung tissues the pulmonary circulation. This blood supply contains deoxygenated blood and travels to the lungs where erythrocytes, also known as red blood cells, pick up oxygen to be transported to tissues throughout the body.

The pulmonary artery carries deoxygenated blood to the lungs. The pulmonary artery branches multiple times as it follows the bronchi, and each branch becomes progressively smaller in diameter down to the tiny capillaries where the alveoli release carbon dioxide from blood into the lungs to be exhaled and take up oxygen from inhaled air to oxygenate the blood.

Once the blood is oxygenated, it drains from the alveoli by way of multiple pulmonary veins that exit the lungs to carry oxygen to the rest of the body. Skip to content Chapter 2. Its purpose is to take in oxygen from the atmosphere so that your heart can circulate oxygenated blood to your tissues.

The respiratory system also helps you excrete carbon dioxide waste. Respiratory System When you inhale air, it travels through your trachea -- a tube that starts at the back of your throat -- downward toward the lungs.

The trachea splits into the primary bronchi, which enter the left and right lung, and then divide into smaller airways that direct air toward the lobes of the lungs -- three lobes on the right, and two on the left. Because your lungs aren't made of muscle, inhalation and exhalation are controlled by the diaphragm and muscles between the ribs. Energy To operate, all cells depend upon a source of energy, which comes in the form of the macronutrients -- carbohydrates, protein and fat -- explains Dr.

Lauralee Sherwood in her book, "Human Physiology. Vitamins and Minerals Cells depend upon vitamins and minerals to help them maintain normal function, and the cells of the respiratory system are no exception.

For instance, the muscles of the respiratory system and the nerves that serve them require sodium and potassium to contract and transmit information.

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