Chapter 2 Test Study Guide

Question 1

Morula ?

Answer 1

1. is the action when the sperm fertilizes the egg

Question 2

After Morula what happens to the cells?

Answer 2

1. it divides making a ball of cells called a blast

Question 3

What is in the blast?

Answer 3

1. Endoderm
2. Ectoderm
3. Mesoderm

Question 4

What does endoderm house?

Answer 4

1. lungs, guts, liver, inside belly

Question 5

What does ectoderm house?

Answer 5

1. nervous system and skin

Question 6

What does mesoderm ?

Answer 6

1. muscles and bones

Question 7

What are the six development of nervous system?

Answer 7

1. dorsal induction
2. ventral induction
3. neural proliferation
4. neuronal migration
5. cortical organization and synapse formation
6. myelination

Question 8

Dorsal induction?

Answer 8

1. first stage

2. neural tube

Question 9

How is the neural tube made?

Answer 9

• the neural plate is formed the posterior part of it
  gets thick
  
  • neural-plate wraps around
  • both ends ( neural pores ) close above / below

Question 10

What is neurulation?

Answer 10

1. neural-plate wraps around

Question 11

What develops in the neural tube?

Answer 11

CNS

Question 12

Why is Dorsal induction so important?

Answer 12

1. because the neural tube will form neural tube, CNS will develop

Question 13

Ventral induction ?

Answer 13

1. second stage

2. Neurodevelopment period when face and brain develop of superior end of the tube

Question 14

What is Corpus Callosum?

Answer 14

1. Dividing 2 hemisphere between and that part will be developed

Question 15

What are the primary division in the ventral induction ?

Answer 15

1. Prosencephalon
2. Mesencephalon
3. Rhombencephalon

Question 16

What are the secondary division in the ventral induction in the Prosencephalon ?

Answer 16

1. Telencephalon

2. Diencephalon

Question 17

What are the secondary division in the ventral induction in the Mesencephalon ?

Answer 17

1. Mesencephalon

Question 18

What are the secondary division in the ventral induction in the Rhombencephalon ?

Answer 18

1. Metencephalon

2. Myelencephalon

Question 19

What neural tissues are made in Telencephalon ?

Answer 19

1. Cerebral Hemisphere
2. Cerebral cortex
3. basal ganglia
4. olfactory bulbs

Question 20

What neural tissues are made in Diencephalon ?

Answer 20

1. Thalamus

2. Hypothalamus

Question 21

What neural tissues are made in Mesencephalon ?

Answer 21

1. midbrain

superior pt of the brain stem

Question 22

What neural tissues are made in Metencephalon ?

Answer 22

1. Pons cerebellum

Question 23

What neural tissues are made in Myelencephalon ?

Answer 23

1. Medulla

inferior pt of the brain stem

Question 24

Neural proliferation ?

Answer 24

1. third stage

2. Neurons being created

Question 25

What is Neurogenesis ?

Answer 25

1. the birth of new neurons

Question 26

What is Neuronal migration ?

Answer 26

1. fourth stage 2. new neurons move in a wave like fission to their correct position in cerebral hemispheres 3. development of the gyrus and sulcus and cerebral lobes

Question 27

What chemical is related during Neuronal migration ?

Answer 27

1. Reelin

Question 28

What is Reelin?

Answer 28

Signals neurons where to stop

Question 29

Cortical organization and Synapse formation ?

Answer 29

1. fifth stage 2. they sprout dendrites and axons 3. Synapse starts

Question 30

what is the the main point of synapse during the Cortical organization and Synapse formation ?

Answer 30

1. start to form and make neurons communicate with each other

Question 31

Myelination ?

Answer 31

1. Sixth stage 2. Axons are coated with Myelin 3. when infants gain greater controls of their bodies and begin to develop the ability to communicate verbally

Question 32

What does myelin coating axons do?

Answer 32

1. makes signals from neurons faster

Question 33

Adolescent Brains ?

Answer 33

1. brain is not complete until 25 | 2. rely more on feelings then on logic because the prefrontal context is not fully developed

Question 34

How does the brain develop?

Answer 34

1. Back to front

Question 35

What are 3 Neural Tube Defects ?

Answer 35

1. Encephalocele 2. Anencephaly 3. Spina Bifida

Question 36

Encephalocele ?

Answer 36

Part of the brain protrudes from skull

Question 37

How does Encephalocele happen?

Answer 37

when the superior neural pores do not close

Question 38

Anencephaly ?

Answer 38

brain development creases at the brain stem; child with out cerebral hemispheres no hemisphere

Question 39

Spina Bifida ?

Answer 39

a cyst on back that may or may not involve spinal cord sensory/ motor symptoms

Question 40

How does Spina Bifida happen ?

Answer 40

Inferior neuron pores don't close