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Just Breathe. Respiratory System HST. Functions of the Respiratory System. Take in O2 for use on a cellular level Expels waste such as CO2 & H2O from the cells Air flow over larynx make speech possible. Word Parts. nas/o alveo/lo sinus/o pneum/o, pneumon/o, pneu
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Just Breathe Respiratory System HST
Functions of the Respiratory System • Take in O2 for use on a cellular level • Expels waste such as CO2 & H2O from the cells • Air flow over larynx make speech possible
Word Parts nas/o alveo/lo sinus/o pneum/o, pneumon/o, pneu epiglott/o atel/o pulm/o pharyng/o cyan/o pulmon/o laryng/o -ectasis tachy- trache/o phon/o thorac/o bronch/o pleur/o -thorax bronchi/o -pnea
The Respiratory Tract • Upper Respiratory Tract = nose, mouth, pharynx, larynx epiglottis, trachea • Lower Respiratory Tract = lungs,bronchi, bronchioles, alveoli Where are these structures located?
Opening of the Respiratory System • Nares- Nares - nasal openings
Nasal Septum Turbinates Separates R & L nares
Functions of the Nose • Mucous membranes -Warm, filter, moisten inhaled air
Cilia • *Move mucous & trapped particles into esophagus
________ Membranes * line surfaces of resp tract AND * secrete ______ to moisten surfaces and trap debris
Sinuses -warm & moisten air -give *resonance to voice *richness, significance
Pharynx AKA the throat • Holds tonsils, adenoids • Receives air & food from mouth • Three divisions * naso_____________ * oro ______________ * laryngo ___________
Larynx AKA “Voice Box” *Contains vocal cords *Produces sound for speech
One of the nine cartilage rings that make up the larynx. AKA: the __________ cartilage
Epiglottis Prevents food from entering the trachea during swallowing glottis
Trachea, Bronchial Tree & Alveoli AKA Windpipe * Carries air between pharynx & bronchi ************* * Right & Left Bronchi branch off trachea to take air to lungs *************** * Bronchioles carry air from bronchi to alveoli Trachea Bronchioles
Alveoli *Site of cellular respiration i.e. O2 & CO2 are exchanged here *Occur in grape like clusters
Lungs *Hold and support structures necessary for respiration * R has 3 lobes(divisions) * L has 2 lobes
Pleura *Multilayered membrane surrounding the lung *Rich & nerve blood supply *Protects & prevents friction
Diaphragm • Muscle that separated thoracic cavity from abdominal cavity • Contraction & relaxation causes respiration