In order for human beings to survive, we have to breathe, and so we have the respiratory tract, which is the passage that air travels along from the outside to our lungs. The respiratory system consists of the respiratory tract and respiratory organs, and is known as pulmonary respiration. In humans, the respiratory tract is a complex system, made up of six key organs.
The nasal cavaty:- Nasal cavity lies above the mouth cavity. Tye nasal cavity communicate to the outside through external nostrils and internally with the pharynx by internal nostrils. Both cilia and mucus check the entry of dust particles in the respiratory passage.
The Pharynx. After entering through the nasal cavity, air next goes to the pharynx. There, the pharynx opens into the larynx or voice box through the glottis. The pharynx is actually shared by the respiratory system with the digestive tract. Luckily, the glottis is usually covered by the cartilage epiglottis when we swallow food, so we donat choke.
Larynx:- It is cartilagious box like structure located at the tracheal opening. When we swallow some food material,the larynx moves up or down to allow safe passage of air or food. Larynx contains two vocal chords which vibrate and produce sound while we speak.
The Trachea. After the larynx, thereas the trachea, which is a tube leading to the bronchi. This tube is eleven centimeters in length and twenty five in diameter. The trachea has an incomplete C-shape cartiligious ring within its wall, which prevents it from collapsing so we can keep breathing.
The Bronchi and Bronchioles. The next stop for air is the two primary bronchi that split off from the trachea. These serve the function of carrying the air into the next organ, the lungs. The right bronchus divides into three bronchi, each extending respectively into the three lobes of the right lung. On the other side, the left bronchi divides into two bronchi that extend into the two lobes of the 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.
The lungs are probably one of the most complex organs in the respiratory tract, with the right lung divided into three lobes and the left lung divided into two. The lungs are enclosed by the pleural cavity, which is itself surrounded by two membranes that secrete an oily matter called pleural fluid, which permeates the Pleural cavity. - 15634
The nasal cavaty:- Nasal cavity lies above the mouth cavity. Tye nasal cavity communicate to the outside through external nostrils and internally with the pharynx by internal nostrils. Both cilia and mucus check the entry of dust particles in the respiratory passage.
The Pharynx. After entering through the nasal cavity, air next goes to the pharynx. There, the pharynx opens into the larynx or voice box through the glottis. The pharynx is actually shared by the respiratory system with the digestive tract. Luckily, the glottis is usually covered by the cartilage epiglottis when we swallow food, so we donat choke.
Larynx:- It is cartilagious box like structure located at the tracheal opening. When we swallow some food material,the larynx moves up or down to allow safe passage of air or food. Larynx contains two vocal chords which vibrate and produce sound while we speak.
The Trachea. After the larynx, thereas the trachea, which is a tube leading to the bronchi. This tube is eleven centimeters in length and twenty five in diameter. The trachea has an incomplete C-shape cartiligious ring within its wall, which prevents it from collapsing so we can keep breathing.
The Bronchi and Bronchioles. The next stop for air is the two primary bronchi that split off from the trachea. These serve the function of carrying the air into the next organ, the lungs. The right bronchus divides into three bronchi, each extending respectively into the three lobes of the right lung. On the other side, the left bronchi divides into two bronchi that extend into the two lobes of the 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.
The lungs are probably one of the most complex organs in the respiratory tract, with the right lung divided into three lobes and the left lung divided into two. The lungs are enclosed by the pleural cavity, which is itself surrounded by two membranes that secrete an oily matter called pleural fluid, which permeates the Pleural cavity. - 15634
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