The two parts of the nervous system are the:

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Question 1 of 5

The two parts of the nervous system are the:

Correct Answer: B

Rationale: The correct answer is B: Central and peripheral. The central nervous system consists of the brain and spinal cord, responsible for processing information and generating responses. The peripheral nervous system includes all nerves outside the central nervous system, connecting the CNS to the rest of the body. Motor and sensory (choice A) are functions within the nervous system, not separate parts. Peripheral and autonomic (choice C) are both divisions of the peripheral nervous system, not the two main parts. Hypothalamus and cerebral (choice D) are specific structures within the brain, not the two main parts of the nervous system.

Question 2 of 5

While obtaining a health history of a 3-month-old infant from the mother, the nurse asks about the infant's ability to suck and grasp the mother's finger. What is the nurse assessing?

Correct Answer: A

Rationale: The correct answer is A: Reflexes. At 3 months, infants have primitive reflexes such as sucking and grasping, controlled by the brainstem and spinal cord. The nurse is assessing the infant's normal neurological development. Choice B, intelligence, is not appropriate to assess in a 3-month-old. Choice C, CNs (cranial nerves), is too specific for this assessment. Choice D, cerebral cortex function, is not fully developed at this age to control sucking and grasping.

Question 3 of 5

During the taking of the health history of a 78-year-old man, his wife states that he occasionally has problems with short-term memory loss and confusion: 'He can't even remember how to button his shirt.' When assessing his sensory system, which action by the nurse is most appropriate?

Correct Answer: D

Rationale: The correct answer is D. Before testing the sensory system, it is crucial for the nurse to assess the patient's mental status and ability to follow directions. This is important because cognitive impairment, such as short-term memory loss and confusion, can impact the accuracy of sensory testing results. By assessing the patient's mental status first, the nurse can ensure that the sensory test results are valid and reliable. This step is essential in providing accurate and comprehensive care for the patient. A: The nurse should test the sensory system, but assessing mental status is also necessary. B: Mental status can affect sensory ability, so assessing it is crucial. C: While explaining tests is important, assessing mental status should be the priority before testing.

Question 4 of 5

Which of these tests would the nurse use to check the motor coordination of an 11-month-old infant?

Correct Answer: A

Rationale: The nurse would use the Denver II test to check the motor coordination of an 11-month-old infant. This test assesses developmental milestones, including motor skills appropriate for the child's age. The Denver II test specifically evaluates gross and fine motor skills, which are crucial components of motor coordination in infants. The other choices are not appropriate for assessing motor coordination in infants. Stereognosis tests the ability to recognize objects by touch, deep tendon reflexes assess the integrity of the neuromuscular system, and rapid alternating movements evaluate cerebellar function, none of which directly measure motor coordination in infants.

Question 5 of 5

A 32-year-old woman tells the nurse that she has noticed 'very sudden, jerky movements' mainly in her hands and arms. She says, 'They seem to come and go, primarily when I am trying to do something. I haven't noticed them when I'm sleeping.' This description suggests:

Correct Answer: D

Rationale: The correct answer is D: Chorea. Chorea is characterized by sudden, jerky, involuntary movements that tend to be random and unpredictable. The description provided by the patient matches the hallmark features of chorea, such as the sudden and irregular movements mainly in the hands and arms that occur during voluntary actions. Tics (choice A) are repetitive, stereotyped movements or vocalizations. Athetosis (choice B) is characterized by slow, writhing, involuntary movements. Myoclonus (choice C) involves sudden, brief muscle contractions. Therefore, based on the patient's description, chorea is the most likely diagnosis.

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