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Download RESPIRATORY STYTEM NOTES The human respiratory system
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RESPIRATORY STYTEM NOTES The human respiratory system allows one to _________________________ from the environment and eliminate ______________________________ and __________from the body. Breathing (ventilation): __________________________________________ External respiration: gas exchange between ______________________ Internal respiration: gas exchange between _________________________ Cellular respiration: _______________ use to produce ATP, carbon dioxide as ________________ Structures __________________________: warms, moistens, & filters air as it is inhaled __________________________: passageway for air, leads to trachea __________________________: the voice box, where vocal chords are located __________________________: keeps the windpipe "open" trachea is lined with fine hairs called cilia which filter air before it reaches the lungs __________________________: two branches at the end of the trachea, each lead to a lung __________________________: a network of smaller branches leading from the bronchi into the lung tissue & ultimately to air sacs __________________________: the functional respiratory units in the lung where gases are exchanged Upper Respiratory Tract Functions Passageway for ______________________Receptors for____________ Filters incoming air to _________________________________________ ___________________________________ incoming air ____________________________________________ for voice Lower Respiratory tract Functions: ________________: maintains an open airway, routes food and air appropriately, assists in sound production _________________: transports air to and from lungs _________________: branch into lungs _______________________: transport air to alveoli for gas exchange Gas Exchange __________________________- exchange of gases between the blood stream and the cells of the body At the capillaries, ___________diffuses into the intracellular fluid and then into the body cells & _______________diffuses in the opposite direction __________________ of CO2 is carried by hemoglobin back to lungs Breathing Process _____________________ - chest cavity __________________, Diaphragm contracts (____________________) and lowers, Ribs __________________ _______________ Lungs inflate because during breathing ____________________ pressure creates a ___________________ which “sucks” air into the lungs Exhalation - chest cavity is ____________________, Diaphragm relaxes and moves _________________, Ribs drop _______________________ Lungs deflate because ___________________ pressure pushes the air out of the lungs Gas Exchange External respiration- exchange of gases between ____________________ and ___________________________ in the air sacs Mucus coats air sacs (______________) to moisten them ___________diffuses across air sacs into capillaries of air sacs and ________ diffuses in the opposite direction O2 attaches itself to _______________________ on the red blood cells Gas Exchange ___________________- movement of gases in the blood between the cells to the lungs (circulatory system) ________________of CO2 dissolves in the ______________ and/or combines with water in the plasma to make _________________________ (H2CO3)
