Which structures are separated by the denticulate ligaments?
This dural sac is separated from the vertebrae by the epidural space. The spinal cord, in turn, is attached to the dural sac by the laterally placed denticulate ligaments and by the filum terminale internum.
What does the Denticulate ligament attach to?
On the lateral surface of the spinal cord, the pia thickens and forms a longitudinal cord of connective tissue called the denticulate ligament. This ligament segmentally attaches to the arachnoid and dura laterally, midway between the roots of adjacent spinal cord segments (see Figs.
Where would you find a Denticulate ligament?
The denticulate ligaments are bilateral triangular lateral extensions of pia mater that anchor the spinal cord to the dura mater. They are formed by pia mater of the spinal cord coursing in-between the dorsal and ventral nerve roots bilaterally.
How many Denticulate ligaments are there?
They function to provide stability to the spinal cord within the vertebral canal 1–3. There are usually 21 pairs evenly spaced along the length of the spinal cord but their number can range from 18 to 24 pairs.
Where does the spinal cord anchor?
The spinal cord is anchored distally by the filum terminale, a fibrous extension of the pia mater anchoring the spinal cord to the coccyx.  Protecting the spinal cord is the surrounding cerebrospinal fluid (CSF), supportive soft tissue membranes and meninges, and the osseous vertebral column.
Which spinal cord areas are composed of gray matter?
(Figure 3.1 and Figure 3.6). Spinal cord section showing the white and the gray matter in four spinal cord levels. The gray matter mainly contains the cell bodies of neurons and glia and is divided into four main columns: dorsal horn, intermediate column, lateral horn and ventral horn column.
What does the coccygeal nerve control?
The largest nerve in the sacral plexus is the sciatic nerve that innervates the thigh, lower leg, and the foot. The coccygeal plexus consists of the coccygeal nerve and the fifth sacral nerve, which innervate the skin in the coccygeal region, around the tailbone (called the coccyx).
Is the cauda equina covered in pia mater?
Akin to the rest of the spinal cord, the horsehair projections that together are termed the cauda equina are enveloped in the dura, arachnoid, and pia mater, the 3 meningeal layers.
What is the most common vertebral level of the termination of the spinal cord in adults?
The spinal cord tapers and ends at the level between the first and second lumbar vertebrae in an average adult. The most distal bulbous part of the spinal cord is called the conus medullaris, and its tapering end continues as the filum terminale.
How can you distinguish between the dorsal and ventral horns?
The dorsal horns are the thinner projections of dark matter that jut out from the rest towards the dorsal/back side of the spinal cord. The ventral horns are the wider projections of dark matter towards the ventral/front side of the spinal cord.
What is a synonym for the end termination of the spinal cord called?
The conus medullaris is the terminal end of the spinal cord.