Testbank Chapter 13. The Spinal Cord and Spinal Nerves Multiple Choice 1. Which of the three spinal meninges is the most superficial? a. Arachnoid mater b. Dura mater c. Menix mater d. Pia mater e. Epi mater Ans: B Difficulty: medium Feedback: 13.1 2. Which of the below contains cerebrospinal fluid? a. Epidural space b. Subarachnoid space c. Dural space d. Meninx e. Pia mater Ans: B Difficulty: medium Feedback: 13.1 3. Denticulate ligaments are thickenings of : a. Arachnoid mater b. Pia mater c. Dura mater d. Interstitial fluid e. Subdural space Ans: B Difficulty: medium Feedback: 13.1
Essay 4. Briefly explain why the spinal cord is shorter than the vertebral column in an adult? Ans: During early childhood, both the spinal cord and the vertebral column grow longer as part of overall body growth. Elongation of the spinal cord stops around age four or five but growth of the vertebral column continues. This is why the spinal cord does not extend the entire length of the vertebral column. Difficulty: medium Feedback: 13.1 Multiple Choice 5. This is a structure that results from nervous input from the upper extremities. a. Lumbar enlargement b. Filum terminale c. Cauda equine d. Spinal nerve 12 e. Cervical enlargement Ans: A Difficulty: medium Feedback: 13.1 6. This contains only sensory axons that conduct nerve impulses from sensory receptors in the skin, muscles and internal organs into the CNS. a. Spinal nerves b. Cauda equine c. Anterior root d. Posterior root e. Central canal Ans: D Difficulty: medium Feedback: 13.1
7. Which layer is found surrounding the entire spinal nerve? a. Dura mater b. Pia mater c. endoneurium d. perineurium e. epineurium Ans: E Difficulty: medium Feedback: 13.2 8. Which type of axons contain endoneurium? a. A. Myelinated b. B. Unmyelinated c. C. Dendrites only have endoneurium d. Both a and b e. None of the above Ans: D Difficulty: medium Feedback: 13.2 9. Spinal nerves a. A. Are part of the PNS b. B. Connect the CNS to the body c. C. Are named according to the region of the cord from which they emerge d. Both a and c e. All of the above Ans: E Difficulty: easy Feedback: 13.2 10. This reenters the vertebral cavity through the intervertebral foramen and supplies the vertebrae, ligaments and blood vessels of the spinal cord and meninges. a. Dorsal ramus b. Ventral ramus c. Rami communicates d. Meningeal branch
e. Brachial plexus Ans: D Difficulty: medium Feedback: 13.2 11. Intercostal nerves a. Are also known as cervical nerves b. Directly connect to the structures they supply c. Are found in the C6-T4 area of the vertebrae d. Extend through the sacrum e. Do not exist in humans Ans: B Difficulty: medium Feedback: 13.2 12. A man presents with median nerve palsy in his left hand. What is the most likely sight of injury?
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