The muscles related to the spine
Since there are many bones in the back, many muscles are attached to each.
Here, the muscles related a spine are mainly shown.
First, the main ligaments which keep the bone and bone around a neck together are shown.
There are ligaments also in the bone of a breast and the waist like a neck.

There is the thing similar to a cushion between a bone and a bone.

It is called an intervertebral disc.
We stand and live on two legs against the gravity of the earth.
The power applied on the bone of the backbone is considerable. There is a cushion between bones not to be yield to this gravity.

Moreover, the backbone is supported by the power of the surrounding muscles of the backbone, or the muscles of the belly.

The muscles adhering to the bone in the inner part of the spine are shown.

Seeing from the back, right-hand side muscles were shown.

This animation looks at the spine from the back and the head.
When you see from the back the way that muscles are attached to the bones of the spine, please refer also to this figure.
The muscles which adhere to the bone near the skin of the back are shown.
Seeing from the back, right-hand side muscles were shown.

The muscles shown above were summarized. We are surprised that there are a lot of muscles in the back, aren’t we?