Respiratory System

• The respiratory system is the biological system in an organism's body responsible for gas exchange
• The respiratory system is essential for inhalation and exhalation
• Internal respiration allows oxygen and carbon dioxide to be exchanged between the cells and blood vessels
• Air vibrates the vocal cords that creates sounds through phonation
• Acid-Base Balance can be maintained by removing carbon dioxide from the body
• The respiratory system has pulmonary defense mechanisms using air conditioning, olfaction, and filtering
• The nose is the prominent structure in our face that serves as the entrance point of the air in the body
• The nasal cavity contains fringe of hairs that trap dust particles in the air
• The trachea is also known as windpipe, it serves as the main passageway of air to the lungs
• The trachea is supported by C-shaped rings of cartilages
• The bronchi is the extension of trachea that shuttles air to and from the lungs
• The bronchioles are smaller branches from bronchi that enter in each lungs and is connected to each air sacs
• The alveoli are air sacs inside the lungs where gas exchange occurs
• The lungs are a pair of air-filled organs that contains numerous air sacs responsible for gas exchange
• The right lung has 3 lobes, while the left lung has 2
• The cartilage in the trachea keeps it open and flexible
• The trachea has gland cells that secrete mucus
• The trachea has ciliated cells that moves particles away from the lungs
• Capillaries surround alveoli
• Alveolar walls have thin membranes to allow diffusion
• Oxygen diffuses into capillary blood, while carbon dioxide diffuses out of capillary blood