The respiratory system and its functions

Human respiratory system

As in cephalopod mollusks, oxygen utilization is relatively high—up to 70 percent of the oxygen is extracted from the water passing over the gills in the European crayfish Astacus.

Morphology of a chicken lung. Because the gap between the vestibular folds is always larger than the gap between the vocal cords, the latter can easily be seen from above with the laryngoscopean instrument designed for visual inspection of the interior of the larynx. An individual air capillary AC surrounded by a dense network of blood capillaries asterisk in a chicken lung.

During expiration through the nose, the air is dried and cooled, a process that saves water and energy. The reaction occurs in other tissues as well, but it is particularly prominent in the lungs.

Consequently, respiratory gas flow through the parabronchi, atria, and the gas-exchanging air capillaries is unidirectional and continuous during both inspiration and expiration. They clean, moisten, and warm the inspired air, preparing it for intimate contact with the delicate tissues of the gas-exchange area.


Relaxation of the diaphragm allows air to flow back out the lungs during exhalation. The floor of the nasal cavity is formed by the palatewhich also forms the roof of the oral cavity.

Note the serial arrangement of blood capillaries running from the periphery to the lumen of the parabronchus and the air capillaries radially extending from the parabronchial lumen. In the United States, legislation has been introduced several times to allow Respiratory Therapists certified as asthma specialists with registered Respiratory Therapist certification to prescribe and manage previously diagnosed respiratory patients in physician clinics.

The mucus helps in filtering out contaminants like dust, pollen, and smoke. A Micrograph of lung tissue from a Brown Honeyeater Lichmera indistincta showing a parabronchi, b blood vessel, and c exchange tissue bar, micrometers.

In a normal human lung all the alveoli together contain about 3 liters of alveolar air. A Medial view of the lung of a domestic chicken Gallus gallus domesticus. They practice in acute care facilities, long-term acute care facilities, skilled nursing facilities, assisted-living centers, subacute care units, rehabilitation centers, diagnostics units, and in the home.

Most state boards of respiratory care require proof of the appropriate NBRC credential and award various license titles, including but not limited to Respiratory Care Practitioner, Licensed Registered Respiratory Therapist, and Licensed Certified Respiratory Therapist.

The tendency for the alveoli to collapse is therefore almost the same at the end of exhalation as at the end of inhalation.

As a result, when the lungs fill with air, the surface tensions of the inflated alveoli are less than those of the relatively undistended alveoli. This illustrates how the pulmonary capillary blood is completely surrounded by alveolar air.When lungs don't work well. Some people have willeyshandmadecandy.commes when they get a cold, are in contact with something they are allergic to, or exercise hard, the muscles in tiny tubes in their lungs get tighter making the tubes narrower and there is a lot more mucus.

The Scientific World Journal

A respiratory therapist is a specialized healthcare practitioner trained in pulmonary medicine in order to work therapeutically with people suffering from pulmonary disease. Respiratory therapists graduate from a community college or university with a certification in respiratory therapy and have passed a national board certifying examination.

For this purpose, a detailed description of parts, functions, diseases and other related topics on “What is human respiratory system?” is given in the respective sections. The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history.

• The respiratory mucosa, consisting of an epithelial layer and an areolar layer, lines the conducting portion of the respiratory system.

• In the upper respiratory system, trachea and. The cells of the human body require a constant stream of oxygen to stay alive.

Functions of Cell Organelles

The respiratory system provides oxygen to the body’s cells while removing carbon dioxide, a waste product that can be lethal if allowed to accumulate.

The respiratory system and its functions
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