ATI RN
Neurological Review of Systems Questions Questions
Question 1 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.
Question 2 of 5
Which one of the following is the correct sequence of events that follows a threshold potential: 1. the membrane becomes depolarized 2. sodium channels open and sodium ions diffuse inward 3. the membrane becomes repolarized 4. potassium channels open and potassium ions diffuse outward while sodium is actively transported out of the cell
Correct Answer: B
Rationale: The correct sequence is: sodium channels open and sodium ions diffuse inward (2), the membrane becomes depolarized (1), potassium channels open and potassium ions diffuse outward while sodium is actively transported out of the cell (4), and the membrane becomes repolarized (3). Thus, B is the correct answer.
Question 3 of 5
Which of the following is a traumatic brain injury:
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
A 35 year-old reporter presents to your office for evaluation of back pain and weakness in his left leg. He was play-wrestling with his nephew and hurt his back 2 weeks ago. He states that he has noticed tingling in his left leg as well. He has not noticed incontinence of bowel or bladder function. You perform a physical examination and confirm that he is dragging his left foot when he walks and that his Achilles reflex is diminished. The diagnosis is a herniated disc. Which nerve root are you testing with the Achilles reflex?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
In Drosophila, the neuroectoderm is located ventrally during gastrulation, while in mice or frogs, the neuroectoderm is located dorsally. Which statement best describes how the two systems are similar or different?
Correct Answer: D
Rationale: Despite differences in the location of the neuroectoderm (ventral in Drosophila, dorsal in vertebrates), both systems share similarities in the genetic mechanisms underlying neural development. Homologous genes, such as those involved in lateral inhibition, play crucial roles in specifying neurons in both invertebrates and vertebrates. This highlights the evolutionary conservation of developmental processes despite morphological differences.