Question

what is spinal cord?​

Answer 1

Answer:

• Spinal cord is the lower extension of the medulla oblongata of the brain.
• It lies within the neural canal of the vertebral column and is surrounded by three meninges.
• Externally, the spinal cord appears as long cylindrical rod.
• It is 42 to 45 cm long and 2.0 to 2.5 cm broad.
• Conus medullaris: Terminal nervous part of the spinal cord.
• Filum terminale: Thread like non-nervous extension.
• 31 pairs of spinal nerves arise from lateral sides of he spinal cord.
• Cauda equina - Filum terminale with some spinal nerves running parallel to it.

Answer 2

Answer:

The cord of nervous tissue that extends from the brain lengthwise along the back in the spinal canal, gives off the pairs of spinal nerves, carries impulses to and from the brain, and serves as a center for initiating and coordinating many reflex acts is called  SPINAL CORD.The cord of nerve tissue extending through the spinal canal of the spinal column is called SPINAL CORD.

Explanation: