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Respiratory system Heidi Martinez P.1 (Two major function (2 major…
Respiratory system Heidi Martinez P.1
Two major function
2 major functions
Distribution of air- filters, warm, humifies air
Gas exchange- supplies oxygen and removes carbon dioxide
respiratory tract
upper respiratory tract- nose, nasal cavity, sinuses, pharynx, larynx
lower respiratory tract- trachea, bronchial tree, lungs
organs of the respiratory system
nose- supported by the bone and cartilage provides an entrance for air in which air is filtered by coarse hairs inside the nostroils
pharynx- a common passageway for food and air
Larynx- helps keep particles from entering the trachea
Trachea- the inner wall of the trachea is lined with ciliated mucous membrane to trap incoming particles
Bronchial- Consists of branched mucous membrane-lined tubes leading from the
trachea to the alveoli that warm, moisten, and filter incoming air
lungs- •Right and left soft, spongy, cone-shaped lungs separated medially by the mediastinum
the right and left lung
•Right lung has three lobes (superior, middle,
and inferior)
left lung has two lobes
(superior and inferior).
lung capacity
inspirational capacity= TV + IRV (~ 3000 mL)
Functional residual capacity= ERV + RV
vital capacity=TV + IRV + ERV (~4600 mL)
Breathing pattern
Eupean-normal, quiet breathing
Apnea-stopped respirations (temporary)
Dyspean-labored or difficult/painful respirations
Tachypean-rapid breathing
Hyerpreventilation-rapid and deep respirations