Mark the following statements as true or false. If a statement is false, correct it to make a true statement.


b. A vertebral disc is composed of an inner anulus fibrosus and an outer nucleus pulposus.

Verified step by step guidance

1. Understand the anatomy of a vertebral disc: A vertebral disc is a structure located between the vertebrae of the spine. It is composed of two main parts: the outer anulus fibrosus and the inner nucleus pulposus.
2. Analyze the statement: The problem states that a vertebral disc is composed of an 'inner anulus fibrosus' and an 'outer nucleus pulposus.'
3. Compare the statement with the correct anatomy: The correct anatomy of a vertebral disc is the opposite of what is stated. The anulus fibrosus is the tough, fibrous outer layer, while the nucleus pulposus is the gel-like inner core.
4. Determine the truth value of the statement: Based on the comparison, the statement is false because it incorrectly describes the positions of the anulus fibrosus and nucleus pulposus.
5. Correct the false statement: Rewrite the statement to make it true. The corrected statement should be: 'A vertebral disc is composed of an outer anulus fibrosus and an inner nucleus pulposus.'

Key Concepts

Vertebral Disc Anatomy

The vertebral disc is a fibrocartilaginous structure located between the vertebrae in the spine. It consists of two main components: the outer annulus fibrosus, which is a tough, layered structure that provides strength and stability, and the inner nucleus pulposus, a gel-like substance that allows for flexibility and shock absorption.

Anulus Fibrosus vs. Nucleus Pulposus

The annulus fibrosus is the outer ring of the vertebral disc, made up of concentric layers of collagen fibers that help contain the nucleus pulposus. In contrast, the nucleus pulposus is the inner core, composed of a gelatinous material that provides cushioning and allows for movement between the vertebrae.

Common Misconceptions

A common misconception is confusing the roles and locations of the annulus fibrosus and nucleus pulposus. The statement in the question incorrectly identifies their positions; the annulus fibrosus is outer, while the nucleus pulposus is inner. Understanding their correct anatomical positions is crucial for studying spinal health and pathology.