Nokea
Which of the following statements is FALSE regarding amphibian and mammalian visual systems?
- A. In frog tadpole, neurons from retina project from the left retina to the right optic tectum
- B. Mammalian superior colliculus is analogous to the amphibian optic tectum
- C. In both frog tadpole and mammals, half of the neurons project to the lateral geniculate nuclei (LGN) from the same side; the other half project to LGN on the opposite side
- D. Amphibian neurons from dorsal retina project to lateral side of the tectum
Correct Answer: C
Rationale: The statement that half of the neurons project to the lateral geniculate nuclei (LGN) from the same side in both frog tadpoles and mammals is false. In mammals, most retinal neurons project contralaterally, while in amphibians, the projection pattern is more complex and varies by species. This highlights differences in visual system organization between these groups.
You may also like to solve these questions
When the nursing student asks the RN what an arthroplasty is, what is the best description the RN can give the student?
- A. Surgical fusion of a joint to relieve pain
- B. Correction of bone deformity by removal of a wedge or slice of bone
- C. Reconstruction or replacement of a joint to relieve pain and correct deformity
- D. Used in rheumatoid arthritis to remove the tissue involved in joint destruction
Correct Answer: C
Rationale: Arthroplasty reconstructs or replaces the joint.
A 70-year-old alcoholic patient with acute lethargy, confusion, and incontinence is admitted to the hospital ED. His wife tells you that he fell down the stairs about a month ago, but 'he didn't have a scratch afterward.' She feels that he has become gradually less active and sleepier over the last 10 days or so. Which of the following collaborative interventions will you implement first?
- A. Place on the hospital alcohol withdrawal protocol.
- B. Transfer to radiology for a CT scan.
- C. Insert a retention catheter to straight drainage.
- D. Give phenytoin (Dilantin) 100 mg PO.
Correct Answer: B
Rationale: A CT scan is needed to rule out a subdural hematoma, which could explain the symptoms.
Control of temperature, endocrine activity, metabolism, and thirst are functions associated with the:
- A. medulla oblongata
- B. cerebellum
- C. hypothalamus
- D. thalamus
Correct Answer: C
Rationale: The hypothalamus regulates temperature, endocrine activity, metabolism, and thirst. The medulla oblongata, cerebellum, thalamus, and cerebrum have different roles. Thus, C is the correct answer.
Which of the following nursing interventions may reduce hemostasis and decrease the potential for thrombophlebitis for a client with neurologic disorder?
- A. Remove and reapply elastic stockings
- B. Change the client's position
- C. Keep extremities at neutral position
- D. Use a flotation mattress
Correct Answer: B
Rationale: Changing position promotes circulation and reduces clot formation.
What is an appropriate nursing intervention to promote communication during rehabilitation of the patient with aphasia?
- A. Use gestures
- B. pictures
- C. and music to stimulate patient responses.
- D. Talk about activities of daily living (ADLs) that are familiar to the patient.
Correct Answer: A
Rationale: Non-verbal cues and familiar topics help facilitate communication in patients with aphasia