The opening in a vertebra that is formed by a neural arch and back portion of a vertebral body and through which the spinal cord passes is called as:
1. intervertebral foramen.
2. vertebral canal.
3. vertebral foramen.
4. formen magnum.

The number of pairs of vertebrosternal ribs in humans are:

Situated between the two hip bones of the pelvis, sacrum is a triangular bone in the lower back formed from fusion of:

The cartilaginous section at the lower end of the sternum, which is not attached to any ribs, and gradually ossifies during adult life is:

1. manubrium.

2. body.

3. xiphoid process.

4. clavicular surface.

The number of pairs of vertebrochondral ribs in humans are:

The cartilages that attach the ribs to the sternum are called as:
1. elastic cartilages
2. costal cartilages
3. calcified cartilages
4. fibrous cartilages

The atlas vertebra of humans:
1. articulates with temporal bone.
2. does not have a body.
3. has an odontoid process.
4. does not have a vertebral foramen.

All thoracic vertebrae:

1. lack a transverse process.

2. lack a body.

3. have facets for ribs.

4. have transverse foramen.

A medical condition in which a person's spine has a sideways curve is called:
1. lordosis.
2. kyphosis.
3. scoliosis.
4. PIVD.

The pectoral girdle is composed of