NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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dorsal root ganglia
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denticulate ligaments
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anterior roots
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None of the above
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Detailed explanation-1: -Thirty-one pairs of nerves branch out through vertebral openings (the neural foramen). These nerves carry messages between the brain and muscles. Soft tissues: Ligaments connect the vertebrae to hold the spine in position. Muscles support the back and help you move.
Detailed explanation-2: -Cerebrospinal fluid (CSF) surrounds the spinal cord, which is also shielded by three protective layers called the meninges (dura, arachnoid and pia mater).
Detailed explanation-3: -The denticulate ligaments are fibrous structures that help to anchor the spinal cord in place. The posterior spinal arteries supply the dorsal spinal cord with blood and run just medial to the dorsal root entry zone.
Detailed explanation-4: -Denticulate ligaments (purple) are bilateral thickenings of the collagen component of pia mater. Periodically each denticulate ligament has a lateral extension that attaches to dura mater and thus provides a means of suspending the spinal cord in subarachnoid fluid within the subarachnoid space.