ATI LPN
Timby's Introductory Medical-Surgical Nursing Thirteenth, North American Edition
Chapter 36 : Introduction to the Nervous System Questions
Question 1 of 5
The nurse is caring for a client who is undergoing single-photon emission computed tomography (SPECT). What is a potential side effect that this client may suffer?
Correct Answer: C
Rationale: SPECT obtains images of the brain after the client intravenously receives radiopharmaceuticals and radioisotopes approximately 1 hour before the test begins. A potential risk of SPECT is the client's allergic reaction to the imaging material. Headache is an aftereffect of a cisternal puncture, and claustrophobia is experienced by clients during a magnetic resonance imaging scan.
Question 2 of 5
Which neurons transmit impulses from the CNS?
Correct Answer: D
Rationale: Neurons are either sensory or motor. Sensory neurons transmit impulses to the CNS; motor neurons transmit impulses from the CNS. A membranous sheath called the neurilemma covers the myelin of axons in peripheral nerves. Dendrites are nerve fibers.
Question 3 of 5
A critical care nurse is documenting the assessment of a client. The client is status postresection of a brain tumor. The nurse documents that the client is flaccid on the left. This means that the client:
Correct Answer: B
Rationale: Flaccidity is when the client has no motor response to stimuli. Flaccidity is a motor assessment.
Question 4 of 5
A nurse is caring for a client with an injury to the central nervous system. When caring for a client with a spinal cord insult that is slowing transmission of the motor neurons, in what would the nurse anticipate a delayed reaction?
Correct Answer: D
Rationale: The central nervous system is composed of the brain and the spinal cord. Motor neurons transmit impulses from the central nervous system. Slowing transmission in this area would slow the response of transmission leading to a delay in reaction. Sensory neurons transmit impulses from the environment to the central nervous system, allowing identification of a stimulus. Cognitive centers of the brain interpret the information.
Question 5 of 5
The nurse is instructing a community class when a student asks, 'How does someone get super strength in an emergency?' The nurse should respond by describing the action of the:
Correct Answer: B
Rationale: The division of the autonomic nervous system called the sympathetic nervous system regulates the expenditure of energy. The neurotransmitters of the sympathetic nervous system are called catecholamines. During an emergency situation or an intensely stressful event, the body adjusts to deliver blood flow and oxygen to the brain, muscles, and lungs that need to react in the situation. The musculoskeletal system benefits from the sympathetic nervous system as the fight-or-flight effects pump blood to the muscles. The parasympathetic nervous system works to conserve body energy not expend it during an emergency. The endocrine system regulates metabolic processes.