With the help of a labelled diagram describe the respiratory system in humans.
Answers
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Answer:
“Human Respiratory System is the organ system that involves inhaling of oxygen and exhaling of carbon dioxide to meet the energy requirements.”
Explanation:
Respiratory Tract
The respiratory tract in humans is made up of the following parts:
External nostrils – For the intake of air.
Nasal chamber – which is lined with hair and mucus to filter the air and remove dust and dirt.
Pharynx – It is a passage behind the nasal chamber and serves as the common passageway for both air and food.
Larynx – Also known as the soundbox as it helps in the generation of sound and thus helps us in communicating.
Epiglottis – It is a flap-like structure that covers the glottis and prevents the entry of food into the windpipe.
Trachea – It is a long tube passing through the mid-thoracic cavity.
Bronchi – The trachea divides into left and right bronchi.
Bronchioles – Each bronchus is further divided into finer channels known as bronchioles.
Alveoli – The bronchioles end up into the balloon-like structures known as the alveoli.
Lungs – We have a pair of lungs, which are sac-like structures and covered by a double-layered membrane known as pleura.
Respiration In Humans
Respiration is the process of taking in oxygen and giving out carbon dioxide. There are two types of respiration processes in humans:
External Respiration, that involves the inhalation and exhalation of gases.
Internal Respiration, that involves the exchange of gases between blood and body cells.
