Paleospinothalamic Pathway for Transmitting Slow-Chronic pain.

Glutamate is one of the most widely used excitatory in the PNS.

Concave Lens diverges light rays, but the convex lens converges light rays.

Inner plexiform layer of Retina’s layers stores large quantities of Vitamin A.

Transducin in Retinal portion activates cGMP phosphodiesterase, an enzyme that catalyzes the breakdown of 5’-GMP to cGMP.

Attenuation reflex is a reflex to protect the cochlea from damaging vibrations caused by excessively loud sound.

Bending of the hairs in one direction depolarizes the hair cell. This in turn excites the auditory nerve fibers synapsing with their bases.

A substance used frequently by psychologist for demonstrating taste blindness is phenylthiocarbamide.

Sweet-tasting compounds are detected by receptor ENaC.

Salty and sour taste sensations use receptor proteins specific ion channels, T1R2 and T1R3.

The Pacinian corpuscles and Muscle spindles are especially adapted for detecting slow rates of change.

Amorphosynthesis is when the somatosensory association area is removed on one side of the brain, the person loses the ability to recognize complex objects and complex forms felt on the opposite side of the body.

Brodmann’s areas 5 and 7 of the cerebral cortex play important roles in deciphering deeper meanings of the sensory information in the somatosensory areas.

Deep sensations refers to sensations from the internal organs.

Reverberatory (Oscillatory) Circuits is a cause of signal prolongation.

Opening of chloride ion channels through the post-synaptic neuronal membrane causing the Excitatory in the Postsynaptic membrane.

Free nerve endings is Mechanoreceptor

Rods and Cones is Chemoreceptor.

Proprioceptive sensations are considered “special” sensation rather than somatic.