RESPIRATORY SYSTEM

• the respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants
• the parts of respiratory system are the nasal cavity, nose, mouth, pharynx, larynx, bronchioles, trachea, lungs, bronchi, alveoli, and diaphragm.
• nose and mouth are the entrance of oxygen in our body.
• the nasal cavity is the air passing this part is warm, damp, and clean.
• the pharynx is our throat.
• the larynx is our voice box.
• the trachea is also known as WINDPIPE. It is an empty tube that serves as passageway of air into the lungs.
• the lungs is the main organ of the respiratory system.
• the bronchi is the two branching tubes that connects the trachea to the lungs and direct the air you breathe to your left and right lungs.
• the bronchioles are the hairlike tubes that connect to the alveoli. They are the air passages inside the lungs.
• the alveoli are the air sacs that allows gas exchange in the lungs.
• the diaphragm is a muscle that helps you breathe. It sits under your lungs and separates your chest cavity from your abdomen.
• when we inhale the oxygen ENTERS our body. Ribs MOVE OUT and chest space INCREASES diaphragm muscle CONTRACTS.
• when we exhale the oxygen EXITS our body. Ribs MOVE IN and chest space DECREASES, diaphragm muscle RELAXES