Also known as the oral cavity
 Surface of teeth/gums
 Teeth in back

Sensitive
 Easily irritated
 If the nasal cavity gets irritated it can
swell and cause blockage to other
sinuses
 Divided left/right

Located above the tooth roots
 Contain nerve and blood vessels
 When teeth become older these
become larger
 The maxillary sinus
is for drainage

Located on the dorsal part of the skull
 Two (one on each side between the
eyes)
 Drainage into the nostrils

One pouch on each side of the throat
 Filled with air
 Horses, mules and donkeys have the
largest pouch known
 If the pouch becomes infected, deadly
side affects my occur (no cure)


The yellow stands for the
two pouches
The soft plate separates the pharynx
from the mouth
 This flap (soft plate) moves when the
horse is swallowing
 Its there so that the horse cant inhale
anything including air

Located between the pharynx and
trachea
 Another word for the Larynx is the voice
box, it allows the horse to whinny and
grunt.

Contains five pieces of cartilage
 The trachea carries air to the lungs
 In an adult horse its about 80 cm in
length
 Spongy material

Air passageway
 No gas exchange in this airway





Alveolus is connected to the lungs
Thousands of them
Dental surgery can easily damage the alveolus
Dental surgery
can damage the
alveolus by
pinching a nerve in
the mouth and
transferring to
the alveolus and
permanently
damaging it
The horses large lungs allow it to cool
down faster
 300 liters of blood go through the lungs,
10 million air sacs deliver over 70 liters of
oxygen per min. to muscles when a
horse is at a full out gallop
 The lungs are made up of a spongy
material

Horses can only breath through their
nostrils
 The avg. respiration rate is 15-20
breaths/minute

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http://www.ivis.org/proceedings/aaepfocus/2
006/tremaine1.pdf
http://www.britannica.com/EBchecked/topic/
395124/mouth
http://www.equinekingdom.com/data/educat
ion/horse_anatomy/respiratory_system.html
http://en.wikipedia.org/wiki/Respiratory_system
_of_the_horse
http://en.mimi.hu/horse/larynx.html
http://www.horseandhound.co.uk/horsecare/1
370/34656.html