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morphology of a venomous snake: head click to hear : morphology of a venomous snake: head

Venomous snake: it defends itself by injecting often deadly venom; there are about 400 species.
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See morphology of a venomous snake: head in : french | spanish
movable maxillary scale tongue sheath forked tongue tooth glottis venom gland fang venom-conducting tube venom canal pit eye vertical pupil nostril

movable maxillary click to hear : movable maxillary

Highly mobile bone of the upper jaw allowing the snake to swallow large prey.

scale click to hear : scale

Each of the overlapping small hard thin plates covering the snake’s body.

tongue sheath click to hear : tongue sheath

Protective sheath located in front of the glottis into which the tongue retracts.

forked tongue click to hear : forked tongue

Elongated movable forked mouthpart having olfactory, tactile and gustatory functions; it is not used to ingest food.

tooth click to hear : tooth

Hard pointy structure that curves backward and is fixed to the jaws; it grows continually and is used to immobilize prey but not to chew.

glottis click to hear : glottis

Opening in the respiratory system located in the lower portion of the buccal cavity, through which air circulates.

venom gland click to hear : venom gland

Organ producing an acidic secretion made of venom; it is attached to the fang.

fang click to hear : fang

Large curved tooth located on the maxilla and connected to the venom gland; it allows the snake to grab its prey to inject it with venom.

venom-conducting tube click to hear : venom-conducting tube

Tube carrying venom from the venom gland to the venom canal.

venom canal click to hear : venom canal

Hollow fissure in the fang allowing venom to be injected by biting.

pit click to hear : pit

Sensory organ forming a cavity between the eye and the nostril; it allows the snake to sense variations in temperature and to locate its prey.

eye click to hear : eye

Organ of sight covered with a transparent scale; it has a wide field of vision and mainly perceives motion and colors.

vertical pupil click to hear : vertical pupil

Oval and vertical opening of the eye, especially adapted to the dark; image-producing light enters through it.

nostril click to hear : nostril

External orifice of the nasal cavity located above the mouth and having olfactory and respiratory functions.