Question

How does the respiratory system work in the human body?

Answer 1

“The Human Respiratory System is an organ system that helps people meet their energy needs by inhaling oxygen and exhaling carbon dioxide.”
The human respiratory system is made up of a collection of organs and tissues that aid in breathing. The principal organs of the respiratory system that aid in gas exchange are the lungs. A set of airways for air passages, blood vessels, and muscles that support breathing are the other essential components of this system.

Complete answer:
The respiratory and circulatory systems work together to renew the body's oxygen supply. Millions of tiny units called alveoli in the lungs help this process along through a physical mechanism known as gas exchange.
Inhaling oxygen and expelling carbon dioxide into and out of our lungs is the physical process of breathing. Respiration, on the other hand, is a chemical reaction in which oxygen is used to break down glucose and provide energy for various cellular functions.
Internal respiration, external respiration, and cellular respiration are the three types of respiration in humans. External respiration is the breathing process, whereas cellular respiration is the metabolic events that occur in the cells to produce energy.
The nose, larynx, pharynx, trachea, bronchi, and lungs are all key elements of the human respiratory system.
The following components make up the human respiratory system:
External nostrils – For the purpose of air intake.
Nasal chamber – To filter the air and eliminate dust and filth, it is lined with hair and mucus.
Pharynx – It is a tunnel behind the nasal chamber that acts as a shared air and food conduit.
Larynx – It's also known as the soundbox since it aids in the production of sound, which helps humans communicate.
Epiglottis – It's a flap-like structure that protects the glottis from food getting into the windpipe.
Trachea – It's a lengthy tube that goes through the middle of the thoracic cavity.
Bronchi – The trachea is divided into two bronchi: left and right.
Bronchioles – Each bronchus is further divided into bronchioles, which are smaller tubes.
Alveoli – The bronchioles end up into the balloon-like structures known as the alveoli.
Lungs –sac-like structures and covered by a double-layered membrane known as pleura

Note:
Features of human respiratory system-
In all living cells of the human body, energy is generated through the breakdown of glucose molecules.
Oxygen is inhaled and delivered to various regions of the body, where it is employed in a sequence of chemical processes at the cellular level to burn food particles (break down glucose molecules).
The resulting glucose molecules are used by the human body to discharge energy in the form of ATP-adenosine triphosphate molecules, which are necessary for living operations.