Development of Brain & Skull

Question 1

prosencephalon

Answer 1

forebrain

Question 2

mesencephalon

Answer 2

midbrain

Question 3

rhombencephalon

Answer 3

hindbrain

Question 4

prosencephalon at 5 weeks

Answer 4

1. telencephalon: walls of cerebral hemisphere

2. diencephalon: thalamus and subdivisions

Question 5

mesencephalon at 5 weeks

Answer 5

forms midbrain

Question 6

rhombencephalon at 5 weeks

Answer 6

1. metencephalon

2. mylencephalon

Question 7

metencephalon

Answer 7

pons: ventral, mostly fibers
cerebellum: dorsal

Question 8

myelencephalon

Answer 8

continuous w/ spinal cord at foramen magnum

gives rise to medulla- brainstem nuclei involved in cranial nerves

Question 9

central canal (neurocoel) gives rise to:

Answer 9

1. lateral ventricles
2. 3rd ventricle
3. cerebral aqueduct
4. 4th ventricle

Question 10

lateral ventricles

Answer 10

region of telencephalon

made up of different horns

Question 11

3rd ventricle

Answer 11

single, in region of diencephalon

associated w/ thalamus

Question 12

cerebral aqueduct

Answer 12

region of mesencephalon

very small canal in between 3rd and 4th ventricles

Question 13

4th ventricle

Answer 13

in region of metencephalon and myelencephalon

rostral: open, associated w/ pons and medulla
caudal: closed, associated w/ medulla, continuous with central canal of spinal cord