Directions: Choose the Best Answer Based on the Information You

question 19

Multiple Choice

Directions: Choose the best answer based on the information you read in Chapter Eighteen. ​ I wrote ______ article for the school newspaper.

• A)​a
• B)​an

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Definitions:

Vertebrae

The individual bones making up the vertebral column (spine) in humans and other vertebrates.

Ribs

The long curved bones which form the rib cage, providing protection to the thoracic organs.

Intervertebral Discs

The cartilage discs that sit between the bones (vertebrae) in the spine, acting as shock absorbers and allowing flexibility.

Annulus Fibrosus

The outer portion of the intervertebral disc that surrounds the nucleus pulposus, providing the disc with strength and flexibility.