http://www.reptilesmagazine.com/Kid-Corner/Beyond-Beginners/Snake-Anatomy-Respiratory/

Snakes have a small opening just behind the tongue called the glottis, which ... The portion of a snake's lung nearest its head has a respiratory function; this is ...

http://www.animalplanet.com/pets/other-pets/snake-anatomy/

May 15, 2012 ... Snakes have both nostrils and nasal cavities, but they are not used to .... snakes do not have a diaphragm, air enters and leaves the lung due to ...

https://en.wikipedia.org/wiki/Snake

Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes. Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more joints than their lizard .... Tetrapodophis does not have distinctive snake features in its spine and skull.

https://vcahospitals.com/know-your-pet/snakes-owning

Snakes do not have a diaphragm; they use the muscles of the ribs and body wall to pump air in and out of the lungs. The lung can occupy much of the snake's ...

https://animals.howstuffworks.com/snakes/snake1.htm

Snakes do not have a diaphragm like people do, so they circulate air in and out of the lungs by narrowing the rib cage to push air out and then widening it again ...

https://en.wikivet.net/Snake_Respiratory_System

Aug 18, 2012 ... The trachea enters the lung at a level near the base of the heart. Some species of snakes have a unique saccular diverticulum of open tracheal ...

https://www.quora.com/How-do-snakes-breathe

How does the DuckDuckGo app/extension protect my privacy? For over a ... Most snakes have only one main, functional lung to obtain oxygen.

https://www.ck12.org/biology/reptile-structure-and-function/lesson/Reptile-Structure-and-Function-Advanced-BIO-ADV/

Dec 11, 2015 ... Reptiles depend entirely on their lungs for respiration. Lizards do not have a diaphragm; instead, their chest muscles move the chest wall, ...

https://www.snakesforpets.com/how-do-snakes-breathe/

So, some snakes can swim underwater. ... live underwater, but since they're mammals, they have regular lungs.

https://sites.google.com/a/jeffcoschools.us/snake-respiratory-system/human-and-snake-respiratory-system

An interesting fact that differentiates snakes from humans is that snakes, unlike humans, don't have a diaphragm. Also, humans have 2 fully developed lungs.