Spinal Cord Cross Section With Spinal Nerve Roots

The spinal cord is made up of 31 segments this tutorial shows some anatomy cross section and histology images of the segments in interactive way.

Spinal cord cross section with spinal nerve roots. Nerves along the cord consists of. The spinal cord can be divided into segments according to the nerve roots that branch off of it. These nerves must pass between the protective barrier of the spinal column to connect the spinal cord to the rest of the body.

Spinal cord gray matter functions the gray matter is the area of the spinal cord where many types of neurons synapse. What is the shape of the spinal cord when viewed in cross section. Cervical spine nerve roots.

The spinal cord has a central core of gray matter that looks somewhat butterfly or h shaped in cross sections. The external surface of the spinal cord has what two longitudinal depressions. Each spinal nerve is attached to the spinal cord by two roots.

The fibers of the sensory root carry sensory impulses to the spinal cord pain temperature touch and position sense proprioception from tendons joints and body surfaces. Explained beautifully in an illustrated and interactive way. Roughly cylindrical but slightly flattened both posteriorly and anteriorly.

A dorsal or posterior sensory root and a ventral or anterior motor root. What nerve roots project inferiorly from the spinal cord but are still housed in the vertebral canal. For most spinal segments the nerve roots run through the bony canal and at each level a pair of nerve roots exits from the spine.

The core consists mainly of two posterior dorsal horns which extend toward the posterolateral surfaces of the cord and two thicker anterior ventral horns which extend toward the anterolateral surfaces. The spinal cord is a long thin tubular structure made up of nervous tissue which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column it encloses the central canal of the spinal cord which contains cerebrospinal fluid the brain and spinal cord together make up the central nervous system cns. In this video i cover the spinal cord in cross section.