American Academy of Professional Coders (AAPC) Practice Exam

What is the main component of meninges?

1. Muscle tissue

2. Nervous tissue

3. Connective tissue membrane

4. Epithelial tissue

The correct answer is: Connective tissue membrane

The main component of meninges is connective tissue membrane. Meninges are three protective layers that cover the brain and spinal cord, composed primarily of connective tissues that provide support and protection. These layers include the dura mater, arachnoid mater, and pia mater, each of which plays a specific role in safeguarding the central nervous system. Connective tissue is crucial in forming the meninges because it consists of fibers that can support and protect while allowing for flexibility and movement. This structural support ensures that the delicate nervous tissues within the brain and spinal cord are well-cushioned and protected from physical shocks or impacts. Muscle tissue does not play a role in the composition of meninges as it is involved in contraction and movement rather than protection. Nervous tissue, while vital to the function of the brain and spinal cord, is not directly involved in forming the meninges themselves. Epithelial tissue covers and lines various surfaces and cavities in the body but is not the primary tissue type in choosing the layers that comprise the meninges. Thus, the choice of connective tissue membrane accurately reflects the biological makeup and purpose of the meninges.