About 300. They have very small bones, though, which gives them the big frame. Small bones can go a long way!
Spiders do not have a backbone because they belong to a group of animals called arachnids, which have an exoskeleton instead of an internal skeleton. This exoskeleton provides support and protection for their bodies. Spiders are able to move and function effectively without a backbone due to this exoskeleton.
I found out that a guinea pig has 206 bones in it's body!
Their bones are so small that they snap like a twig under pressure.
There are two main categories of animals: vertebrates and invertebrates. Vertebrates have a backbone and include mammals, birds, reptiles, amphibians, and fish. Invertebrates do not have a backbone and include insects, arachnids, mollusks, and crustaceans.
spine
The small bones that form the backbone are called vertebrae. They are stacked on top of each other to form the spinal column, providing structure and support to the body while also protecting the spinal cord.
Of course it does. Although, as in all vertebrates, the backbone is not a single bone, but a set of vertebrae, small bones linked together, so that the overall backbone will bend, while still protecting the spinal nerve.
They are invertebrates, so, no they don't have a backbone. In fact, they don't have any bones at all. They do have the largest brain of any invertebrate, however.
-Allows more movement -If you break 1 vertebrae it is alot better than breaking the one long hallow bone
No. Unless they are Dolphins or whales they don't have a backbone.
If the spine was one continuous bone, we would be very restricted in our upper body movements. The jointed vertebrae allow flexibility.
That's the way they are, they have an exoskeleton. Maybe for something that small bones are not a good option
(just like insects) No arachnids don't have backbones. They are just an eight legged creature, that are invertibrates. But they do have small individual bones.
Yes, in the group of animals called the "vertebrates" (ie those animals with backbones), the backbone comprises many small bones (called vertebrae) that are articulated together to form the "spine".
The backbone is a column usually consisting of 24 vertebrae, the sacrum, intervertebral discs, and the coccyx situated in the dorsal aspect of the torso, separated by spinal discs.
The spine (vertebral column, spinal column, backbone) is made up of small vertebrae stacked on top of each other.