Viperid

This type of skull has small teeth and large, retractable fangs that are thick or hooked.

Cranial Anatomy

^^ is directly related to each species' diet and—in ^^ the case of venomous snakes—to its system for injecting poison. Most snakes have small skulls with jawbones that can be separated voluntarily by sliding them along a kind of perpendicular rail, which consists of a bone called the quadrate. This greatly increases the size of the snake's mouth.

JACOBSON'S ORGAN gives the snake an excellent sense of smell. It consists of two cavities in the palate, into which the snake brings its tongue after "tasting" the outside air. That is why snakes continually stick out their tongues.

DUVERNOY'S GLAND

FANGS

Primitive Snakes

The Asian Cobra Mesozoic Era

Injecting Fangs

Cobra species expel their venom in different ways depending on their fangs. The angle and direction of the opening determine how forcefully the liquid is injected.

ASIAN COBRA

Naja naja

It is the typical cobra, which bites to inject its venom.

RINKHALS SPITTING COBRA

Hemachatus haemachatus It can spit great distances.

Black Necked Spitting Cobra

BLACK AND WHITE COBRA Naja meianoieuca It must bite its prey in order to inject venom.

BLACK-NECKED COBRA

Naja nigricolis

It has a jaw with a spur, but it does not actually spit.

BLACK AND WHITE COBRA Naja meianoieuca It must bite its prey in order to inject venom.

BLACK-NECKED COBRA

Naja nigricolis

It has a jaw with a spur, but it does not actually spit.

ASIAN COBRA

Naja naja

It is the typical cobra, which bites to inject its venom.

RINKHALS SPITTING COBRA

Hemachatus haemachatus It can spit great distances.

Primitive Snakes

Injecting Fangs

Cobra species expel their venom in different ways depending on their fangs. The angle and direction of the opening determine how forcefully the liquid is injected.

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Responses

  • mollie williamson
    How does a cobra inject venom?
    8 years ago

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