Neuro embryonic development

Question 1

What are the three vesicles that first arise in brain embryonic development?

Answer 1

1. Prosencephalon (forebrain),
2. Mesencephalon (midbrain), &
3. Rhombencephalon (hindbrain).

Question 2

What structures does the prosencephalon give rise to?

Answer 2

The prosencephalon gives rise to the :

1. Telencephalon (‘endbrain’) > cerebral hemispheres / cerebrum,
2. Diencephalon (‘through-brain’) > thalamus & hypothalamus

Question 3

Which of the three primary brain vesicles do not divide / give rise to more than one brain structure during development;

(i) Prosencephalon,
(ii) Mesencephalon, or
(iii) Rhombencephalon?

Answer 3

The Mesencephalon does not give rise to multiple structures.

The Prosencephalon gives rise the the telencephalon & diencephalon; and the Rhombencephalon gives rise to the mentencephalon (‘after brain’) and the myelencephalon (‘most like spinal cord).

Question 4

What structures does the Rhombencephalon (‘hind brain’) give rises to?

Answer 4

The Rhombencephalon gives rise to:

(i) The Metencephalon (‘after brain’) > Pons & cerebellum
(ii) The Myelencephalon (‘most like spinal cord’) > medulla oblongata

Question 5

What developed brain structure does the Mesencephalon form?

Answer 5

The mesencephalon forms the mid brain (the most superior segment of the brain stem structure.