Development of the brain

Question 1

there are initially 3 vesicles name them?

Answer 1

prosencephalon, mesencephalon, rhombencephalon

Question 2

these vesicles need to bend to fit the skull, name the bends?

Answer 2

cervical fissure (between the spinal cord and the rhombencephalon) and the cephalic flexure (between the rhombencephalon and the mesencephalon)

Question 3

the rhombencephalon splits into the?

Answer 3

metencephalon and myelencephalon

Question 4

the prosencephalon splits into the?

Answer 4

telencephalon and diencephalon

Question 5

the 4th ventricle comes form? the 3rd ventricle comes from?, the two lateral ventricles come from? What ventricle is missing from here?

Answer 5

the rhombencephalon. the diencephalon. from the telencephalon. the mesenephric aqueduct of silvias

Question 6

the purpose of the ventricular system is?

Answer 6

to produce CSF whoch fills the ventricles and the sub arachnoid space

Question 7

the brain stem is made of 3 parts, name them

Answer 7

medulla oblongata (from the myencephalon), the pons (metencephalon), the mesencephalon

Question 8

the location of the cerebellum compared to the brain stem is? It comes from?

Answer 8

it is dorsal to the brain stem, it comes from the myencephalon

Question 9

where is 4th ventricle ?

Answer 9

between the brain stem and the cerebellum

Question 10

how many cranial nerves are located in the brain stem?

Answer 10

10 out 12

Question 11

what are the 7 territories of the brain?

Answer 11

somatic, visceral, special visceral, special somatic sensory, somatic/brachial/visceral motor

Question 12

what undergoes the book like opening?

Answer 12

the rhombencephalon, the metencephalon fully opens and the mylenephalon partially opens

Question 13

the basal plates and alar plates change direction from what to what? This opening causes the formation of?

Answer 13

ventral and dorsal to medial and lateral. it causes the formation of ventricle 4th

Question 14

the roof palate if the 4th ventricle connects with the?

Answer 14

pia mater and this forms the tele coroidea where the CSF will be synthesized

Question 15

most of the specific nuclei of the brain stem derive from which plate?

Answer 15

the alar plate

Question 16

does the mesencephalic vesicle undergo the book like opening ?

Answer 16

no, the alar and basal plates fragment, the cavity shrinks ans becomes the aqueduct of silvias

Question 17

the aqueduct of silvias is the connection between?

Answer 17

the 4th and 3rd ventricle

Question 18

where does the tectum of the midbrain form?

Answer 18

dorsal to the midbrain

Question 19

the metencephalis vesicle and the mylencephalic vesicle open how?

Answer 19

the metencephalic vesicle opens to along the whole length, th mylencephalon opens only in the rostral region

Question 20

where is CSF made?

Answer 20

chordoid plexuses in the ventricles of th brain

Question 21

how is the tele choroidea formed?

Answer 21

the roof plate is stretched and becomes a very thin atrophic tissue forming ependymal layer, the overlying pia mater fuses with this ependymal layer

Question 22

the CSF is a filtrate of blood, where is the blood filtered?

Answer 22

the pia mater gets heavily vascularized and forms a capillary glomeruli that etend into the ventricular cavity

Question 23

what is the coroid plexus?

Answer 23

is the region of the tele coroidea where the capillary glomeruli protrude into the ventricular cavity

Question 24

where does the cerebellum come from?

Answer 24

it derives form the alar plate of the metencephalic vesicle and it is found behind the brain stem, it covers the roof of the 4th ventricle

Question 25

the components of the cerebellum are?

Answer 25

the medial part called VERMIS and the 2 lateral cerebellar hemispheres. it is divided into 3 lobes: anterior, posterior, flocculonodular lobes.

Question 26

the flocculonodular is made of?

Answer 26

a cortex which has both white and gray matter, and gray matter from which deep cerebellar nuclei form

Question 27

the telencephalon divides into?

Answer 27

the telencephalic hemispheres

Question 28

what happens to the telencephalic vesicles?

Answer 28

they grow and bend superiorly and move towards theoccipital bone and acquire a C shaped appearance to cover the diencephalon

Question 29

the 3rd ventricle is contained in the?

Answer 29

diencephalon

Question 30

The thalamus and the hypothalamus come from

Answer 30

The diencephalon (alar plate forms thalamus and basal plate forms the hypothalamus)

Question 31

The area above the sulcus limitans is the thalamus and what is the metathalamus

Answer 31

They are 2 regions beside the thalamus on th3 right and left

Question 32

Talk about the subthalamus

Answer 32

It is lateral and posterior to the thalamus and is connected to the midbrain

Question 33

What is the Tele coroidea and the epithalamus

Answer 33

The anterior roof of diencephalon becomes very thin and and forms the Tele coroidea which contains the coroid vessels. The posterior roof palate becomes the epithalamus (pineal gland comes from here)