S.No. | Cranial nerves | Arises from ... | Ends in ... |
---|---|---|---|
I. | Olfactory nerves | Olfactory epithelium of nasal chambers | Temporal lobes of cerebrum |
II. | Optic nerves | Retina of eyes | Cerebellum |
III. | Auditory nerves | Internal ears | Cerebrum |
IV. | Pathetic nerves | Floor of mid brain | Superior oblique muscle of eye ball |
Table 1: List of Cranial Nerves: Their Origins and End Points
A wooden block of mass M lies on a rough floor. Another wooden block of the same mass is hanging from the point O through strings as shown in the figure. To achieve equilibrium, the coefficient of static friction between the block on the floor and the floor itself is
In an experiment to determine the figure of merit of a galvanometer by half deflection method, a student constructed the following circuit. He applied a resistance of \( 520 \, \Omega \) in \( R \). When \( K_1 \) is closed and \( K_2 \) is open, the deflection observed in the galvanometer is 20 div. When \( K_1 \) is also closed and a resistance of \( 90 \, \Omega \) is removed in \( S \), the deflection becomes 13 div. The resistance of galvanometer is nearly:
The human nervous system is responsible for controlling and coordinating all the activities of the human body.
The Central Nervous System (CNS) comprises the brain and spinal cord.
The Peripheral Nervous System (PNS) comprises sensory/motor neurons and ganglion.