Which of the following is not a part of the hindbrain?

Match the structures in Column $I$ with the structures connecting them in Column $II$:

Column $I$	Column $II$
$(a)$ Cerebral hemispheres	$(i)$ Habenular commissure
$(b)$ Two lobes of thyroid gland	(ii) Corpus callosum
$(c)$ Cerebellar hemispheres	(iii) Isthmus
$(d)$ Thalami	(iv) Vermis

The cavity present in the spinal cord is called....

Which part of the brain converts short-term memory into long-term memory?

Which of the following cranial nerves in humans are mixed nerves?

Write short notes on the following: (Any four)
$(a)$ Neural coordination $(b)$ Forebrain $(c)$ Midbrain $(d)$ Hindbrain $(e)$ Retina