The Fetal Head and Brain

Question 1

What is the foramen magnum?

Answer 1

The opening in the base of the skull through which the spinal cord exits

Question 2

What is a group of thin walled blood vessels and cells within the subependymal layer of the fetal brain responsible for brain cell migration during fetal development called?

Answer 2

Germinal matrix

Question 3

Largest part of the CP is called?

Answer 3

Glomus

Question 4

Meckel Gruber syndrome:

Answer 4

a fetal syndrome associated with microcephaly, occipital encephalocele, polydactyly and polycystic kidneys

Question 5

What does TORCH stand for?

Answer 5

Toxoplasmosis, other infections, rubella, CMV and herpes simplex virus

Question 6

Most common congenital obstruction of the ventricular system in utero which causes hydrocephalus?

Answer 6

Aqueductal stenosis

Question 7

Does porencephaly communicate with the ventricular system?

Answer 7

Yes

Question 8

CPC’s are associated w an increased risk of:

Answer 8

Tri18

Question 9

Fluid filled clefts within the cerebrum is consistent with:

Answer 9

Schizocephaly

Question 10

The interthalamic adhesion (massa intermedia) passes through the:

Answer 10

3rd ventricle

Question 11

The third ventricle is located:

Answer 11

Between the two lobes of the thalamus

Question 12

The fourth ventricle is located:

Answer 12

Anterior to the cerebellar vermis

Question 13

The cisterna magna should not exceed _____ in the

transcerebellar plane.

Answer 13

10mm

Question 14

The dangling choroid sign is synonymous with:

Answer 14

Ventriculomegaly