week 1- nervous system development

Question 1

what area of the brain expands dramatically into a “C” shape

Answer 1

telencephalon this causes the lateral sulcus which separates the frontal from the temporal lobe

Question 2

Resulting adult tissue from the -proencephalon -mesencephalon -rhomb encephalon

Answer 2

Pro: cerebral cortex, basal ganglia hypothalamus and thalamus Mes: midbrain Rhomb: pons, cerebellum, medulla

Question 3

label the

lateral sulcus

thalamus

hypothalamus

long fissure

insula

Answer 3

Question 4

what is the motor and somatosensory homunculus and what is the order of their connections

Answer 4

motor- in precentral gyrus of the frontal

UMN (motor cortex) –>LMN (brainstem) –> contralateral skeletal muscle

somatosensory- in the postcentral gyrus of the parietal

1 neuron (periphery) –> 2nd neuron (ipsilateral) –> thalamus (contralateral) –> 3rd neuron (in thalamus also) –> contralateral somatosensory cortex