Development of CNS - CNS الجزء الأول أناتومي الـ

Failure of the cranial neuropore to close around the 25th day of development results in which condition?

Which of the following developmental structures gives rise to the ganglia of the body?

The ventricular system of the brain is derived from which of the following?

During neurulation, what structure is formed by the fusion of neural folds?

Which of the following best describes the origin of neural crest cells?

Chromaffin cells, which contribute to the suprarenal medulla and carotid bodies, are derived from what embryonic structure?

A defect in the closure of the caudal neuropore during neural tube development would most likely result in which condition?

What is the correct order of the following structures during the process of neurulation?

Which of the following structures is derived from the prosencephalon?

The obstruction of the aqueduct of Sylvius is most directly associated with which of the following conditions?

Which part of the developing neural tube forms the spinal cord?

What is the defining characteristic of spina bifida occulta?

From which primary brain vesicle does the pons and cerebellum originate?

Which structure directly precedes the formation of the neural tube during embryonic development?

Which of the following gives rise to the pia and arachnoid mater?

What brain region is derived from the mesencephalon?

Which of the following anomalies is characterized by an abnormal ventricular system due to CSF accumulation?

The telencephalon gives rise to what structure?

During neurulation, the neural groove is located:

Failure of the caudal neuropore to close properly can result in:

Considering the derivatives of the neural crest cells, if a genetic mutation disrupted the normal development of spongioblasts, which of the following structures would most likely be affected?

During neurulation, the neural tube separates from the ectoderm. What cellular process is most critical for ensuring this separation occurs correctly, preventing neural tube defects?

Which of the following scenarios would most directly lead to hydrocephalus?

A research team is studying the expression of specific transcription factors during the formation of the neural tube. If they observe a complete absence of Pax6 expression, which of the following processes would most likely be disrupted?

During a prenatal ultrasound, a physician observes that a fetus has an abnormally small head circumference (microcephaly). Considering the developmental origins of the brain, which of the following underlying cellular processes is most likely impaired in this case?

A researcher is investigating the role of cell adhesion molecules during neural tube closure. If they introduce a mutation that disrupts the function of N-cadherin specifically in the neural folds, what would be the most likely outcome?

If the rhombencephalon failed to properly differentiate during embryonic development, which of the following structures would most likely be affected?

During the formation of the ventricular system, an obstruction occurs at the cerebral aqueduct (aqueduct of Sylvius). Which of the following ventricles would be most directly affected?

A genetic study reveals a mutation affecting the expression of sonic hedgehog (SHH) specifically in the notochord. Which of the following developmental processes would be most directly impacted?

Failure of neuroblasts to properly differentiate during neural crest development would most directly affect:

Assuming a teratogen exposure specifically disrupts the development of the telencephalon, which resulting condition would be most anticipated?

During early neural tube development, the alar plate and basal plate form. If the morphogenic signals guiding the development of the alar plate were disrupted, what type of neurons would be most affected?

If the expression of fibroblast growth factor 8 (FGF8) is significantly reduced at the anterior neural ridge during early brain development, which structure formation is most likely to be impaired?

In a scenario where the intermediate cell mass fails to develop properly during kidney formation, which related system could also exhibit abnormalities due to proximity during development?

Which cellular event is an essential step in the transformation of the neural plate into the neural tube?

If the diencephalon fails to develop properly, which sensory or motor function impairment would be most expected?

Disruptions in the normal signaling pathways during mesencephalon development, leading to malformation, would most likely impact which function?

What specific developmental event is critically dependent on the proper functioning of the organizer region during neurulation?

In the context of neural tube defects, what distinguishes spina bifida with myelocele from spina bifida with meningocele?

What would be the most significant consequence if somite development was disrupted?