Spinal cord Meninges

The video explains the protective layers of the spinal cord, known as meninges, which include dura mater, arachnoid mater, and pia mater. Each layer has a specific role in safeguarding the spinal cord. The dura mater forms a tough sheath, the arachnoid mater creates a web-like structure with cerebrospinal fluid, and the pia mater closely adheres to the spinal cord. The vertebral column provides additional protection, and the video also discusses the cauda equina and its significance.

What analogy is used to explain the protective function of the meninges?

• A bird and its nest

• A ship and its anchor

• A car and its seat belt

• A house and its roof

Which layer of the meninges is described as dense collagenous connective tissue?

• Arachnoid mater

• Pia mater

• Dura mater

• Subarachnoid space

What is the subarachnoid space filled with?

• Blood

• Fat tissue

• Air

• Cerebrospinal fluid

What are dentate ligaments and what is their function?

• They are projections that allow spinal cord movement.

• They are ligaments that connect bones to bones.

• They are projections that stabilize the spinal cord.

• They are ligaments that connect muscles to bones.

What is the cauda equina composed of?

• Blood vessels and nerves

• Bone and cartilage

• Nerve rootlets and cerebrospinal fluid

• Muscle fibers and ligaments