In humans an additional. The atlas and axis vertebrae, the top two cervicals, form a freely movable joint with the skull.



The inside is made of a soft, spongy type of bone that is called cancellous bone. . .

This column supports about half of the weight of the body, with the other half supported by the muscles.

During development, there’s a disproportion between spinal cord growth and vertebral column growth. The vertebral bodies of the cervical vertebrae are also interconnected by uncovertebral joints (clefts of Luschka). .

Types of bones. .

Medullary canal - contains either red (active) or yellow (inactive) bone marrow.


Each intervertebral disc strongly unites the vertebrae but still allows for a limited amount of movement between them. They primarily consist of.

. The upper 24 pre-sacral vertebrae are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx, or tailbone.

The atypical thoracic vertebrae display variation in the size, location and number of their superior and inferior costal facets.
Bone is a living, rigid tissue of the human body that makes up the body's skeletal system.

Their importance.


. . Bones are classified according to their shape.

What are the. . Osteoporosis is a disease that weakens your bones, making them more susceptible to sudden and unexpected fractures. These bones form in tendons (the sheaths of tissue that connect bones to muscles) where a great deal of pressure is generated in a joint. The major ligaments of the vertebral column include: the anterior and posterior longitudinal ligaments, ligamenta flava, supraspinatus ligament, ligamentum. During development, there’s a disproportion between spinal cord growth and vertebral column growth.

Synonyms: Spine.

When the neural tube doesn’t close all the way, the backbone that protects the spinal cord doesn’t form and close as it. The main bones of the skeleton and their location are shown here: Vertebral column The vertebral column is divided into five main sections and each contains a specific number of vertebrae.

The most common types of spinal fractures include: Compression fractures: Compression fractures are small breaks or cracks in your vertebrae that are caused by traumas or develop over time as a result of osteoporosis.

Each area of the spine has some differences in the form and function of vertebral bodies and how they.


Most spinal cord injuries are the result of a sudden, traumatic blow to the vertebrae.

Cortical bone - outer layer.