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Respiratory System

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allison pearce

on 20 January 2017

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Transcript of Respiratory System

Apex (top) of lungs extends approximately 2-4 cm above inner 1/3 of clavicle

6th rib at MCL
8th rib at MAL

Base (bottom) of lungs is near T10, T12 during deep inspiration
Chapter 16
Thorax and Lung Assessment

Allison Pearce MSN, RN
Supply adequate oxygen
Prevent excess accumulation of CO2
Production of vocal sounds

Process involves:
Diffusion & Perfusion
Circulatory transport

Adult lungs contain 300 million alveoli
Each of these air sacs are covered in a mesh of tiny blood vessels called capillaries
The capillaries connect to a network or arteries and veins that move blood through the body
Lower airway
(Trachea (windpipe) -Bronchus)

The main passageway for air into the lungs
Bifurcates into R & L bronchi
Branch into thousands of smaller, thinner tubes called bronchioles
These tubes end in bunches of tiny air sacs called alveoli
Nasal Cavity
Laryngeal Pharynx
Upper Airway
(Nasal Cavity-Laryngeal Pharynx)

Warms, filters, humidifies inhaled air
Transports air into lower airway, where oxygenation and ventilation occur

(Suprasternal notch)
2nd rib
Midclavicular line
Midsternal line
Vertebral line
One pulmonary artery that supplies
blood for gas exchange
Two pulmonary veins return
blood to the left side of the heart for circulation to the rest of the body
Full transcript