viernes, 30 de noviembre de 2018

The most beautiful snakes without poison

Snakes are reptiles without legs, with a long and scaly body in their dorsal part. The belly of the snakes is covered by thin parts. They do not have eyelids and their eyes remain immobile.

They have an extremely long tongue so that they can project it outwards thanks to the structure of their jaws.


Main characteristics of snakes
The main characteristics of these reptiles are:

Its skeleton: made up of the bony head, the spine and the ribs that are supported by the vertebrae.
His mouth: they can open their mouths enormously because their jaw is joined to the bones by elastic ligaments. In its lower part, the jaw is joined to the skull by the square bone, which is a long, movable bone that enables the skull and jaw to separate. They swallow their whole prey, without cutting or chewing them, starting at the head and making it progress slowly through their digestive tract. The larger the prey, the more the bones of your jaw will separate to expand your oral cavity. The position of its teeth is tilted inward so that once the prey is inside, it can not back off.
Locomotion: move with serpentine, undulating or straight movements.
Different types of snakes: poisonous and non-poisonous
If you like these reptiles you should know that snakes can be poisonous or not and you should know the main characteristics of them.

POISONOUS SNAKES
All snakes have teeth that serve only to retain their prey, but in the case of poisonous snakes, they also have two special teeth in front, to inject venom directly into the prey. A poison produced by their salivary glands, which in the case of poisonous snakes are called poisonous glands.

When the poisonous snake prepares to bite, the teeth are straightened and when the mouth is opened the glands are tightened to load the poison teeth. When biting, the animal inoculates the poison as if by means of an injection.

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