Brain ,spinal cord and reflex action contd..)

Question 1

anterior and posterior portion of corpus callosum

Answer 1

genu and splenium respectively

Question 2

largest nucleus in the basal ganglia

Answer 2

corpus striatum,helps in execution of stereotyped movements

Question 3

cause of parkinson’s disease

Answer 3

destruction of substantia nigra ,a pars compacta part of basal nucleus. low level of dopamine

Question 4

cause of huntington’s chorea

Answer 4

degradation of corpus striatum,degeneration of gaba and acetylcholine.

Question 5

Cerebellar peduncles

Answer 5

form pathways between cerebellum and other parts of cns