"The vertebral column and thoracic cage" LAB EXERCISE 12

pairs of ribs

12

thoracic vertebrae

12

pairs of floating ribs

2

unfused vertebrae

24

bones in the thoracic cage

25

spinal curves

4

lumbar vertebrae

5

pairs of false ribs

5

cervical vertebrae

7

pairs of true ribs

7

STRUCTURES bones in vertebral column

NUMBER 26

The first cervical vertebra is called C1 or ?

atlas

The second cervical vertebra is called C2 or ?

axis

The tailbone is more properly known as the

coccyx

The ? ribs do not articulate, even indirectly, with the sternum

floating

Costal cartilages are composed of ? cartilage tissue

hyaline

The ? is a horseshoe-shaped bone

hyoid

The only bone that does not articulate with another bone is the ?

hyoid

Spinal nerves leave the protection of the vertebral column by way of lateral holes, or gaps, between the vertebrae called ? foramina

intervertebral

? disks form a type of joint between the bodies of vertebrae

intervetebral

The inward curve of the lower back is called the ? curve

lumbar curve

The superior portion of the sternum is called the ?

manubrium

The medial ridge along the posterior surface of the sacrum is called the ?

medial sacral crest

Both radiographs and CT scans use ? to form images of anatomical structures

radiation

The ? is a vertical tunnel through the sacrum for the passage of nerves descending from the spinal cord

sacral canal

Both coccyx and ? are vertebral bones that are actually fused vertebrae

sacrum

The medial bumps along the midline of the back are caused by the ? of each vertebrae

spinous process

Kyphosis is a condition in which the vertebral column is distorted, giving a person a humpback. This condition involves an exaggerated ? curve

thoracic

The ? ribs connect directly to the sternum

true

All ribs articulate with ?

vertebrae