Describe the respiratory system in humans.
Answers
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.
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.
Answer:
The human respiratory system is a
system of organs responsible for
inhaling oxygen and exhaling carbon dioxide in humans. The important respiratory organs in living beings include- lungs, gills, trachea, and skin.