Respiration and Gas Exchange

The nasal passage is the primary cavity located directly behind the nostrils, serving as the first part of the respiratory tract.

The human respiratory system consists of several interconnected organs, including the trachea, bronchi, and lungs, which work together to facilitate gas exchange.

The trachea is a cartilaginous tube that connects the larynx to the bronchi, commonly referred to as the windpipe.

The diaphragm is a dome-shaped sheet of muscle that separates the thoracic cavity, containing the lungs, from the abdominal cavity.

The rib cage is a bony structure that protects the thoracic organs, including the lungs and heart.

Alveoli are tiny, balloon-like air sacs at the end of the bronchioles where gas exchange occurs in the lungs.

The lungs are protected by a double-layered serous membrane called the pleura, which reduces friction during breathing.

Inside the lungs, the bronchi branch into smaller tubes called bronchioles, which eventually terminate in the alveoli.

Alveoli are surrounded by a dense network of pulmonary capillaries to facilitate the exchange of oxygen and carbon dioxide.

Lungs are the organs in which air is purified. Windpipe is a tube like portion of the respiratory (breathing) tract that connects the larynx (the voice box) with the lungs.

fact

During inhalation, ribs move up and outwards and diaphragm moves down. This movement increases space in our chest cavity and air rushes into the lungs. During exhalation, ribs move down and inwards, while diaphragm moves up to its former position.

fact

Pulse rate is the number of heart beats per minute. Transpiration is the loss of water from leaves in the form of water vapor.

Exhalation is giving out of air rich in carbon dioxide. Respiration is breakdown of food material to release energy and photosynthesis is the process of manufacturing food by the plants by using raw materials.