Human being have lungs for respiration. So respiration in human beings is know as pulmonary respiration.Respiratory organs are well developed in human being.The respiratory system consists of repiratory tract and respiratory organs.The repiratory tract is passage along whcih air travels from the atmosphere in order to reach lungs.
The Nasal Cavity. The Nasal Cavity is situated above the mouth, and accesses the external atmosphere through the nostrils, and internally it accessed the pharynx with the internal nostrils. The nasal cavity helps filter out dust particles from the outside environment with the cilia and with mucus.
Pharynx:- From the nasal cavity, the air moves into the pharynx which is common area to both digestive and respiratory tracts.The pharynxopens into larynx or voice box through the glotis.The glotis can be covered by the leaf like cartilage epiglotis during swallowing of food.
The Larynx. The Larynx is a cartilagious structure located at the tracheal opening that resembles a box. When we swallow food, the larynx will move up or down to allow the passage of either air or food. The larynx also serves another purpose, as it contains two vocal chords to vibrate and produce sound, allowing us to speak.
The Trachea: The trachea is the next organ through which air flows. This is a tube that is eleven centimeters in length with a twenty five centimeter diameter. In order to keep the trachea opened, there is an incomplete C-shaped cartiligious ring within the trachea wall.
Bronchi and Bronchioles:- At its lower end, the trachea splits into two primary bronchi.The right bronchus is divided in three bronchi which extend seperatly into the three lobies of right lung.Similarly the left bronchi is divided into two bronchi penetrating into the two lobies of left lung.
Lungs:- There are two lungs in the thoracic cavity.The thoracic cavaty is bounded by vertebral coloumn arrives sternum and diaphragm.The lungs are highly elastic hollow dark coloured spongi bag like structure. The lungs rest on a sheet of muscle called the diaphragm which forms the floor of the thoracic.
As mentioned before, the right lung is separated into three lobes, whereas the left long is only separated into two lobes. The lungs are also surrounded by a narrowly shaped pleural cavity, which is in turn surrounded by two membranes. These membranes secrete an oily substance called pleural fluid, which fills the Pleural cavity. - 15615
The Nasal Cavity. The Nasal Cavity is situated above the mouth, and accesses the external atmosphere through the nostrils, and internally it accessed the pharynx with the internal nostrils. The nasal cavity helps filter out dust particles from the outside environment with the cilia and with mucus.
Pharynx:- From the nasal cavity, the air moves into the pharynx which is common area to both digestive and respiratory tracts.The pharynxopens into larynx or voice box through the glotis.The glotis can be covered by the leaf like cartilage epiglotis during swallowing of food.
The Larynx. The Larynx is a cartilagious structure located at the tracheal opening that resembles a box. When we swallow food, the larynx will move up or down to allow the passage of either air or food. The larynx also serves another purpose, as it contains two vocal chords to vibrate and produce sound, allowing us to speak.
The Trachea: The trachea is the next organ through which air flows. This is a tube that is eleven centimeters in length with a twenty five centimeter diameter. In order to keep the trachea opened, there is an incomplete C-shaped cartiligious ring within the trachea wall.
Bronchi and Bronchioles:- At its lower end, the trachea splits into two primary bronchi.The right bronchus is divided in three bronchi which extend seperatly into the three lobies of right lung.Similarly the left bronchi is divided into two bronchi penetrating into the two lobies of left lung.
Lungs:- There are two lungs in the thoracic cavity.The thoracic cavaty is bounded by vertebral coloumn arrives sternum and diaphragm.The lungs are highly elastic hollow dark coloured spongi bag like structure. The lungs rest on a sheet of muscle called the diaphragm which forms the floor of the thoracic.
As mentioned before, the right lung is separated into three lobes, whereas the left long is only separated into two lobes. The lungs are also surrounded by a narrowly shaped pleural cavity, which is in turn surrounded by two membranes. These membranes secrete an oily substance called pleural fluid, which fills the Pleural cavity. - 15615
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