Neurologic System

Question 1

Neurulation

Answer 1

The process in which neuroectodermal cells transform into the neural tube

Question 2

3 stages of neurulation

Answer 2

Neural plate formation/modeling (3rd wk after conception)
Neural groove formation (3rd wk)
Closure of the neural groove starts at 4th wk beginning with formation of the neural crests. Closure begins in the lower medulla and moves both rostrally and caudally to form neural tube

Question 3

When does neuronal proliferation occur?

Answer 3

Weeks 10 to 20 gestation

Question 4

When does neuronal migration occur?

Answer 4

Weeks 12 to 24 of gestation

Question 5

Forebrain

Answer 5

telencephalon and diencephalon (thalamus, hypothalamus) creates the cerebral hemispheres

Question 6

Midbrain

Answer 6

mesencephalon

Question 7

Hindbrain

Answer 7

Rhombencephalon

Question 8

Cerebellum

Answer 8

Complexity of neurons that influence coordination, muscle tone, posture, and equilibrium. Contains vermis and hemispheres and growth continues into the 2nd year of life.

Question 9

Cerebrum

Answer 9

Consistents of cortical lobes (frontal, parietal, temporal, occipital), corpus callosum, and lateral ventricles

Question 10

Brainstem development after neural tube completed

Answer 10

Midbrain, pons, medulla

Question 11

Midbrain

Answer 11

vision, hearing, sleep/wake, motor control, temperature regulation

Question 12

Pons

Answer 12

Carry sensory messages to the thalamus, conducts signals to brain down to cerebellum

Question 13

Medulla

Answer 13

Control center for involuntary functions

Question 14

Disorders from the prosencephalon

Answer 14

Agenesis of the corpus callosum
Holoprosencephaly
Cortical defects in migration