Erosion is the movement of the broken pieces away from the site of weathering. Basalt columns. For example, a basalt cliff may be weathered by freeze-thaw, a type of physical weathering.This means that pieces of the cliff may break away. Erosion happens when these pieces of rock fall away down the cliff. In the photograph you can see a basalt cliff.rosion is the movement of the broken pieces away from the site of weathering. Basalt columns. For example, a basalt cliff may be weathered by freeze-thaw, a type of physical weathering.
Animals that have a spine are called vertebrates, and animals that don't have one are called invertebrates. Humans have a spine, so we are vertebrates. Many vertebrates, including mammals, have intervertebral discs separating the vertebrae. Regions. The vertebral column is divided by doctors into 5 sections called regions. These 5 regions from top to bottom are: Cervical - Shown in red, this region supports the head. It is made up of 7 vertebrae. The first two, called the atlas and axis, connect the spine to the skull. Thoracic - Shown in blue, this region supports the ribs.
The vertebral column, (spine or spinal column), extends from the base of the skull to the pelvis, forming the vertebral axis of the axial skeleton. It is made up of irregular bones called vertebra which are separated from one another by fibrocartilage called intervertebral discs. Note on the Number of Bones. The number of bones in the human body is generally reported as 206. However, the actual number of bones can vary somewhat from person to person. Some people may lack certain bones and others may have extra bones.