ATI RN
Neurological Review of Systems Questions Questions
Question 1 of 5
In the context of brain imaging, what does FMRI stand for?
Correct Answer: D
Rationale: Functional Magnetic Resonance Imaging (fMRI) is a brain imaging technique that measures brain activity by detecting changes in blood flow. When a brain region is active, it consumes more oxygen, and fMRI captures this increased blood flow. This non-invasive method is widely used in neuroscience to study brain function and map neural activity during various tasks. fMRI has revolutionized our understanding of the brain's organization and function.
Question 2 of 5
Sometimes the impairments caused by an infection are minor, but if the sufferer is hosting the virus over many years it may induce multiple symptoms of motor and cognitive dysfunction and create a syndrome of impairment that is known as:
Correct Answer: D
Rationale: HIV dementia, also known as AIDS dementia complex (ADC) or HIV-associated dementia (HAD), is a syndrome of cognitive and motor dysfunction caused by the long-term effects of HIV infection on the brain. Symptoms include memory loss, difficulty concentrating, slowed thinking, and motor impairments. This condition results from the direct impact of the virus on the central nervous system and the immune system's response to the infection.
Question 3 of 5
An axon conducts nerve impulses _________ the cell body.
Correct Answer: A
Rationale: The axon is a long, slender projection of a neuron that conducts nerve impulses away from the cell body to other neurons, muscles, or glands. When an action potential is generated in the cell body, it travels along the axon to the axon terminals, where neurotransmitters are released into the synapse. This unidirectional flow ensures that signals are transmitted efficiently and accurately to their intended targets.
Question 4 of 5
With an action potential, depolarization of the axomembrane is recorded as the gates open, allowing ________ to flow into the axon.
Correct Answer: C
Rationale: During the depolarization phase of an action potential, voltage-gated sodium channels open, allowing sodium ions to flow into the axon. This influx of positively charged ions causes the membrane potential to become more positive, leading to the rapid rise in voltage observed during an action potential. Sodium ion influx is essential for initiating and propagating nerve impulses.
Question 5 of 5
Nerve impulses are carried to another part of the body by a neuron's (nerve cell):
Correct Answer: B
Rationale: The axon is the part of a neuron responsible for carrying nerve impulses away from the cell body to other neurons, muscles, or glands. It is a long, slender projection that conducts electrical signals, known as action potentials, to the axon terminals. At the terminals, the signal triggers the release of neurotransmitters into the synapse, facilitating communication with the next neuron or target cell. The axon is essential for transmitting information across the nervous system.