respiratory system

• the trachea is the windpipe
• the right lung is bigger than the left lung because there needs to be room for the heart
• alveoli are tiny air sacs where gas exchange occurs between blood and air
• bronchial tree refers to all the branches of the bronchi
• The purpose of the respiratory system is to provide the body and cells with oxygen and to remove carbon dioxide
• The respiratory system consists of the nose, mouth, trachea, bronchi and lungs
• Your nasal cavity and mouth are what take in air and breath it out
• Air travels down the pharynx then splits off into the larynx
• Your larynx goes to your trachea which splits into both lungs
• In the larynx there are ciliated epithelial cells
• Branches from the trachea are called bronchi, which branch into smaller tubes called bronchioles.
• At the end of bronchioles, there are alveoli which are surrounded by capillaries
• Bronchi deliver air to the lungs
• The trachea and bronchi produce mucus and have cilia which removes foreign material
• During gas exchange, O2 enters and CO2 leaves the bloodstream via diffusion
• Diffusion: high concentration to low concentration
• Inhalation = air in
• Exhalation = air out
• Breathing is involuntary
• Muscles around your ribs and your diaphragm contract and relax as you breathe
• During inhalation, the ribcage moves up and out and the diaphragm contracts (moves down)
• During exhalation, the ribcage moves down and in and the diaphragm relaxes (moves up)
• Tuberculosis is a disease in the respiratory system that is caused by a bacterial infection of the lungs (from an air-borne illness)
• Your right lung is bigger than your left lung because your left lung needs room for your heart
• Lactic acid build-up causes pain in our muscles from too much carbon dioxide accumulation
• Cellular respiration occurs when our cells combine chemicals in food with oxygen (creates ATP - Adenosine TriPhosphate)
• the respiratory system provides oxygen to the digestive tract through the bloodstream which allows it to function
• The respiratory system works specifically with the circulatory system
• The lungs receive nutrients by the bloodstream
• Air is brought to muscles, bones, and nerves which allows the cells to function