What is the posterior part of the spinal cord?

The posterior roots transmit sensory information and have sensory ganglion attached to them. They originate from the posterior horns of gray matter and exit through the posterolateral sulcus of the spinal cord.

What is the anatomical position of the spinal cord?

Anatomically, the spinal cord runs from the top of the highest neck bone (the C1 vertebra) to approximately the level of the L1 vertebra, which is the highest bone of the lower back and is found just below the rib cage.

What is posterior primary Rami?

The posterior ramus of spinal nerve (or posterior primary division) refers to the posterior division of a spinal nerve. The ramus is also known by a number of other names, “posterior (or dorsal) rami (or branches or divisions) of the spinal nerves”.

What part of the spinal cord controls the legs?

lumbar spinal cord
The lumbar spinal cord is the lower area of the back. Nerve roots coming from the spinal cord in the lumbar spine control the legs. The lumbar region is where the spinal cord ends (the spinal cord is shorter than the spine).

What is the posterior median sulcus of the spinal cord?

The posterior median sulcus is the posterior end of the posterior median septum of neuroglia of the spinal cord. The septum varies in depth from 4 to 6 mm, but diminishes considerably in the lower part of the spinal cord.

What is the function of posterior ramus of spinal nerve?

The posterior ramus is one of two major branches of a spinal nerve that emerge after the nerve emerges from the intervertebral foramen. The posterior ramus carries information that supplies muscles and sensation to the human back.

What is the difference between anterior and posterior Rami?

Generally speaking, the anterior/ventral ramus innervates the skin and muscle on the anterior aspect of the trunk, while the posterior/dorsal ramus innervates the post-vertebral muscles and the skin of the back.

What are the segments of the spinal cord?

Like the vertebral column, the spinal cord is divided into segments: cervical, thoracic, lumbar, sacral, and coccygeal. Each segment of the spinal cord provides several pairs of spinal nerves, which exit from vertebral canal through the intervertebral foramina.

What is the spinal cord?

Spinal Cord. The spinal cord is a part of the central nervous system. It is a long pipe-like structure arising from the medulla oblongata, part of the brain consisting of a collection of nerve fibres, running through the vertebral column of the backbone. It is segmented with a pair of roots

What is the shape of the spinal cord cross section?

Cross-section of spinal cord displays grey matter shaped like a butterfly surrounded by a white matter. Grey matter consists of the central canal at the centre and is filled with a fluid called CSF (Cerebrospinal fluid). It consists of horns (four projections) and forms the core mainly containing neurons and cells of the CNS.

What are the three columns of the spinal cord?

In both halves of the spinal cord the white matter is grossly divided into three columns: anterior, lateral and posterior funiculi. The dorsal column contains both the gracile and cuneate fasciculi which are responsible for the epicritic sensibility.