Your Journey Through the Respiratory System

By:Victoria Williams

First Stop: Buccal Cavity

Also known as the oral cavity Surface of teeth/gums Teeth in back

Nasal Cavity

Sensitive Easily irritated If the nasal cavity gets irritated it can

swell and cause blockage to other sinuses

Divided left/right

Maxillary Sinus

Located above the tooth roots Contain nerve and blood vessels When teeth become older these

become larger The maxillary sinus is for drainage

Frontal Sinuses

Located on the dorsal part of the skull Two (one on each side between the

eyes) Drainage into the nostrils

Guttural Pouch

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

Pharynx

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

Larynx

Located between the pharynx and trachea

Another word for the Larynx is the voice box, it allows the horse to whinny and grunt.

Trachea

Contains five pieces of cartilage The trachea carries air to the lungs In an adult horse its about 80 cm in

length Spongy material

Bronchus

Air passageway No gas exchange in this airway

Alveolus

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

Lungs

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

Fun Facts

Horses can only breath through their nostrils

The avg. respiration rate is 15-20 breaths/minute

Works Cited

http://www.ivis.org/proceedings/aaepfocus/2006/tremaine1.pdf

http://www.britannica.com/EBchecked/topic/395124/mouth

http://www.equinekingdom.com/data/education/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/horse

care/1370/34656.html