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

Separates R & L nares

Turbinates

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

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, Bronchial Tree & 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 •

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• •

• Muscle that separated thoracic cavity from abdominal cavity• Contraction & relaxation causes respiration