Intermediate Fourth Ventricle Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which groove divides the floor of the fourth ventricle into right and left halves?
- Median sulcus
- Calcarine sulcus
- Central sulcus
- Hypothalamic sulcus
Q2. Which longitudinal elevation lies on each side of the median sulcus in the pontine part of the floor?
- Superior colliculus
- Pulvinar
- Gracile tubercle
- Medial eminence
Q3. What produces the facial colliculus?
- Abducens nucleus and internal genu of the facial nerve
- Vestibular nuclei and cochlear nerve
- Trigeminal motor nucleus and trochlear nerve
- Hypoglossal nucleus and vagus nerve
Q4. Which sulcus separates the medial eminence from the vestibular area?
- Sulcus limitans
- Parieto-occipital sulcus
- Collateral sulcus
- Median sulcus
Q5. Which area of the fourth ventricular floor overlies the vestibular nuclei?
- Facial colliculus
- Vestibular area
- Hypoglossal trigone
- Area postrema
Q6. Which triangular elevation in the medullary floor overlies the hypoglossal nucleus?
- Hypoglossal trigone
- Vagal trigone
- Locus coeruleus
- Vestibular area
Q7. Which surface landmark overlies the dorsal motor nucleus of the vagus?
- Median eminence
- Hypoglossal trigone
- Vagal trigone
- Facial colliculus
Q8. What are the medullary striae of the fourth ventricle?
- Choroid plexus folds
- Transverse fiber bundles crossing the ventricular floor
- Dural septa
- Longitudinal corticospinal fibers
Q9. Which structures contribute to the superior part of the roof of the fourth ventricle?
- Superior cerebellar peduncles and superior medullary velum
- Corpus callosum and septum pellucidum
- Optic chiasm and infundibulum
- Thalamus and hypothalamus
Q10. Which structures contribute to the inferior part of the roof of the fourth ventricle?
- Anterior commissure and fornix
- Internal capsule and caudate nucleus
- Inferior medullary velum and tela choroidea
- Cerebral peduncles and substantia nigra