Question

1) Define or illustrate the following to the best of your knowledge Brainstem components and functions, cerebral sulci, gyri and fissures, functions of hypothalamus, Broca area and Wernicke area of cerebral cortex, location of brain vesicles, cranial nerves (functions), reticular formation (RAS), functions of superior & inferior colliculi, cerebral crus, substantia nigra, thalamus, visceral sensory area of cortex and function, crista ampullaris

Answer 1

Cerebral sulci and fissure are the depression present between the gyri in the cerebral hemisphere. The larger salcus are known as fissures . There are 2 major functions for cerebral sulcus. First one is it help to increase the surface area of cerebral cortex and it help to maintain more information by packing more neurons in the cerebral cortex.

There are diffrent types of cerebral sulci.

Based on depth it is divided into 2 complete and incomplete.

Based on formation it is 2 type primary and secondary. Primary sulci formed from birth and secondary sulci formed after birth due to external factors.