Spinal cord

1. The spinal cord in the adult ends inferiorly at the level of:

• L. 3

• S. 2-3

• T12

• Ll

• L5

The ligamentum denticulatum is a thickening of:

• Epineurium

• Arachnoid mater

• Dura mater

• Pia mater

• Ligamentum flavum

Concerning the substantia gelatinosa of Rolando, all are true EXCEPT:

• It is concerned with exteroceptive stimuli.

• It is found in the posterior horn of the spinal cord

• In the upper two thoracic segments, it is called the spinal nucleus of trigeminal nerve.

• It is found downwards even below the second lumbar segment

Which of the flowing passes between the sixth and seventh cervical vertebrae:

• Vertebral artery

• Seventh cervical spinal nerve

• Sixth cervical spinal nerve

• Vertebral vein

• Eighth cervical spinal nerve

The cauda equine is made up of:

• Spinal nerves of S.l-3

• Anterior rami of spinal nerves L.2, 3

• Posterior rami of spinal nerves L. 1 to coccygeal 1

• Anterior and posterior nerve roots of the spinal nerves below the first lumbar segment of the spinal cord.

• Spinal nerves of L.l - 5

To perform a lumbar puncture (spinal tap) in an adult, the needle is introduced between the spinous processes of:

• L. 4, 5.

• L. 2,3

• S. 1 & L. 2.

• T. l2&L. 1.

• S. 3 & L. 4.

The following statements are true EXCEPT:

• Spinal cord (in adults ends at the lower border of L. 1

• Spinal cord (in children) ends at S. 3

• Dura mater ends at S. 2

• Arachnoid mater ends at S. 2

• Filum terminale ends at coccyx

A herniated disc that causes sensory changes in a specific dermatome pressing on:

• Anterior primary ramus

• Anterior gray horn of the spinal cord

• Anterior root

• Posterior primary ramus

• Spinal nerve or posterior root

Concerning the subarachnoid space, all the following are true EXCEPT:

• Contains cerebrospinal fluid

• Traversed by the ligamentum denticulatum

• Crossed by fibrous processes connecting pia mater to the arachnoid mater.

• Not continues with the subarachnoid space of the posterior cranial fossa.

• Ends inferiorly at the level of S. 2

When performing a lumbar puncture (spinal lap), the following structures are pierced by the needle EXCEPT:

• Posterior longitudinal ligament

• Supraspinous ligament

• Arachnoid mater

• Ligamentum flavum

• Dura mater