AT&T; LTE 7:37 PM a blackboardlearn.utep.edu 53%. 18. Which of the following is

Question

AT&T; LTE 7:37 PM a blackboardlearn.utep.edu 53%. 18. Which of the following is not related to working memory? a. playing piano b. mental calculation c. language d. on-line storage 19. Which of the following does not affect consolidation? b. meditation c. REM sleep d. repebtion 20. Which of the following is the mildest consequence of traumatic brain injury? b. contusion C. hemorrhage d. cerebral edema 21. Which of the following is incorrect regarding REM sleep? a. Most dreaming occurs. b. It is important for memory consolidation c. It is known as paradoxical sleep as the cerebral cortex is active. d. Reticular activating system (RAS) activity is inhibited. 22. The central canal of the spinal cord is analogous to the of the brain b. subdural space c. subarachnoid space d. epidural space 23. Which of the following is not related to cerebrospinal fluid (CSF)? a. protects the CNS from neurotransmitters in the rest of the body b. gives buoyancy to reduce brain weight c. protects the CNS from trauma d. nourishes the brain 24. Why is the blood-brain barrier ineffective against alcohol? a. The brain needs alcohol for energy. b. The blood-brain barmier prevents only blood cells from reaching the brain. c. Alcohol is lipid soluble. d. It isnt alcohol cannot reach the brain 25. Lumbar puncture is generally performed to a. deliver anesthetics b. relieve concussion c. provide nutrients to the spinal cord d. test bacteria infection 26, A person who got into a car accident and injured the thoracic oord would have a. Bell's palsy c. quadriplegia 27. Flaccid paralysis is caused by damage to the a. dorsal spinal nerves b. upper motor neurons C, lower motor neurons d. dorsal root ganglion

Explanation / Answer

20. Mildest consequence of traumatic brain injury is concussion which is accompanied by temporary loss of brain function.

Hence option (a) is correct.

21. In Rapid eye movement (REM) sleep, RAS activity is not inhibited but is inhibited by NREM non rapid eye movement sleep.

Hence option ( d) is correct.

22. The central cord of the spinal cord is analogous to the ventricles of the brain.

Hence option (a) is correct.

23. CSF acts as a cusion and prevents CNS from trauma and also provides nourishment to the brain. It also reduces brain weight by providing buoyancy. It has nothing to do with neurotransmitters present in the body.

Hence option (a) is correct.

24. Blood brain barrier is ineffective against alcohol as it is hydrophobic I,e lipid soluble.

Hence option (c) is correct.

26. Injury to thoracic cord leads to paraplegia in which lower back and muscles of leg are effected.

Hence option ( b) is correct.

27. Flaccid paralysis is caused due to damage to the lower motor neurons. It leads to decresedd reflexes and Atrophy.

Hence option ( c) is correct.

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