Development + Parts of CNS

Question 1

Stages of development of CNS + time frame

Answer 1

1. Conception
   +1-2 days
2. Development of neural tube
   +1-2days
3. Dividing of neural tube into Primary Brain Vesicles
   +4-6days
4. Further development + dividing into Secondary Brain Vesicles (adult brain structures)

Question 2

Components of neural tube

Answer 2

cells + embryotic fluid

Question 3

Parts of Primary Brain Vesicles

anterior -> posterior

Answer 3

1. Procencephalon
2. Mescencephelalon
3. Rhombencephalon

Question 4

Parts of Secondary Brain Vesicles

(anterior-> posterior)

Answer 4

1. Telencephalon
2. Diencephalon
3. Mesencephalon
4. Metencephalon
5. Myelencephalon
6. Spinal Cord

Question 5

How does the primary brain vesicles divide into the secondary brain vesicles

Answer 5

Procencephalon-> Telencephalon + Diencephalon

Mescencephalon-> Mesencephalon

Rhombencephalon-> Metencephalon + Myelencephalon

Question 6

Telencephalon

Answer 6

continues to grow in side with liquid, then liquid drains prior to birth.

forms the external brain (cerebral hemispheres)

Question 7

Diencephalon

Answer 7

interior brain-> 3rd ventricle

contains: thalamus, epithalamus, hypothalamus

Question 8

Mesencephalon

Answer 8

interior brain

contains: mid-brain and cerebral aqueduct

Question 9

Metencephalon

Answer 9

interior brain-> 4th ventricle

contains: pons + cerebellum

Question 10

Myelencephalon

Answer 10

interior brain-> 4th ventricle

contains: Medulla oblongata

Question 11

parts of the hindbrain

Answer 11

metencephalon + myelencephalon

Question 12

parts of the brain stem

Answer 12

mesencephalon, metencephalon, myelencephalon