Question

7. Following a stroke some injured A. B. Microglial cells C. Oligodendrocytes Astrocytes and oligodendrocytes Oligodendrocytes and ependymal cells D. E. Cerebrospinal fluid is found between A. Vertebrae and meninges B. Arachnoid and the dura mater C. Pia mater and the cortical brain tissue D. Pia mater and arachnoid E. None of the above 8. 9. The spinal cord ends at the level of theand andlumbar vertebrae A. 1st/ 2nd B. 12th thoracic/ 1t C. 4th s E. It never ends 10. The spinal puncture places the needle tip in the A. Fourth ventricle B. Central canal of the cord C. Subarachnoid space D. Choroid plexus E. Epidural space 11. How many pairs of spinal nerves attach to the cord? A. 31 B. 35 С. 40 D. 30 E. 26 12. Individual nerve fibers are surrounded by which one of these while they are part of a nen A. Endomysium B. Perimysium C. Epineurium D. Perineurium E. Endoneurium 13. The diaphragm is supplied by a nerve arising from the A. Cervical plexus B. Lumbosacral plexus C. Thoracic plexus D. Brachial plexus E. Cervical and Brachial plexuses

Answer 1

8. D. Cerebrospinal fluid is present between Arachnoid mater and Piamater.

9. A. The spinal cord ends at the level of 1st and 2nd lumber vertebrae.

10. B. The spinal puncture places the needle at the central canal of spinal cord. This is done to collect the cerebrospinal fluid.

11. A. There are 31 pairs of spinal nerves - 8 cervical, 12 thoracic, 5 lumber, 5 sacral and 1 coccygeal.

12. E. Individual nerve fibres are surrounded by Endoneurium, a connective tissue covering. The axons are present in groups called Fascicles. Each fascicle is surrounded by a connective tissue sheath called Perineurium. A nerve is again covered by another connective tissue covering called Epineurium.

13. E. Nerves arising from Cervical and Brachial plexus supply Diaphragm.