Lec 1 - General Organization/Ontogeny

Question 1

Two parts of CNS

Answer 1

Brain, spinal cord

Question 2

PNS consists of these two things

Answer 2

Spinal nerves, cranial nerves

Question 3

Ans resides in both blank and blank

Answer 3

Brain, spinal cord

Question 4

Part of CNS between cerebrum and spinal cord

Answer 4

Brainstem

Question 5

Nervous system is derived from blank

Answer 5

Ectoderm

Question 6

Dorsal induction of the neural plate happens during the blank week of development

Answer 6

3rd week

Question 7

Formation of the neural tube

Answer 7

Primary neuralation

Question 8

Neural tube induces thickening of the blank that generates additional neural crest cells

Answer 8

Cranial epithelium (Placodes)

Question 9

4th week of development has this which is a longitudinal groove in the lateral wall of the neural tube appears and subdivides the gray matter in the walls

Answer 9

Sulcus limitans

Question 10

Sulcus limitans subdivides gray matter in the walls into these two plates

Answer 10

Alar (dorsal) plate, basal (ventral) plate

Question 11

Mass of cells develops in closed caudal end with a secondary cavity to form sacral spinal cord and adjacent tissues

Answer 11

Secondary neurulation

Question 12

At the end of the 4th week, the 3 bulges become blank

Answer 12

Primary vesicles

Question 13

Three primary vesicles

Answer 13

Prosencephalon, mesencephalon, rhombencephalon

Question 14

These form during the 5th week

Answer 14

Secondary vesicles

Question 15

Important part of 5th week is the transient blank that develops that shapes the central cavity and is the future blank

Answer 15

Pontine flexure, 4th ventricle

Question 16

Pontine flexure develops on blank surface of the blank

Answer 16

Dorsal, mesencephalon

Question 17

Growth of this part of the brain overshadows the rest of the brain

Answer 17

Telencephalon

Question 18

Migration and differentiation of blank and blank cells ehlp grow the cerebral cortex and cerebellum

Answer 18

Neuronal, glial cells

Question 19

Most neuronal production happens during this time

Answer 19

Month 3-month 5

Question 20

Adults even have these which allows long term memory

Answer 20

Stem cells

Question 21

This sticks out as a bridge between the two cerebral hemispheres

Answer 21

Lamina terminalis

Question 22

Two commissures formed from lamina terminalis

Answer 22

Anterior commissure, corpus callosum

Question 23

Cerebrum is made from these

Answer 23

Telencephalon, diencephalon

Question 24

Three developmental parts of brainstem

Answer 24

Midbrain, pons, medulla

Question 25

Neural tube cavity persists in adult cns as ventricles which are filled with blank

Answer 25

Csf

Question 26

Lateral ventricles are connected to third ventricle via

Answer 26

Interventricular foramen

Question 27

3rd ventricle communicates with 4th via blank

Answer 27

Cerebral aqueduct

Question 28

3rd ventricle is located in blank

Answer 28

Diencephalon

Question 29

Complete failure of tube to close and cns is an open dorsal furrow on the head and the body

Answer 29

Craniorachischisis

Question 30

Caudal neuropore does not close. Sulcus limitans on each side of the midline ventral groove, the alar and basal plates are visible as four distinct bands o nthe exposed neural plate

Answer 30

Spina bifida

Question 31

Rostra neuropore fails to close and is the absence of cerebral hemisphere

Answer 31

Anencephaly

Question 32

Single misalignment at the site where the neural tube begins to close may cause elongated cerebellum or elongated caudal brainstem

Answer 32

Arnold chiari malformation

Question 33

Three parts of nervous system

Answer 33

CNS, PNS, ans