‘Saltatory’ conduction occurs in unmyelinated nerve fibers.

Receptors that trigger activation of a second messenger system are called metabotropic receptors.

Activation of GABA receptor triggers chloride ion influx, inhibiting the synaptic transmission.

Activation of dihydropyridine (DHP) receptors triggers Ca2+ release into the sarcoplasm of skeletal muscle.

Smooth muscle contraction requires less energy than skeletal muscle contraction.

Tickle and itch sensations are detected by Ruffini’s endings.

Signals transmitted via dorsal column medial lemniscus pathway usually decussate right away when they enter spinal cord.

Catechol-O-methyl is an enzyme responsible for the synthesis of norepinephrine.

Parasympathetic stimulation causes bronchoconstriction.

The ions (Na, Cl, HCO3) are present in the extra cellular fluid (ECF).

Endocrine glands are linked to neural control centers by homeostatic feedback mechanisms.

In diffusion, the movement of the substances will be against concentration gradiant .

Fast pain gives dull, diffuse and unpleasant feeling .

The main cause of short and shooting dental pain is dry socket.

The effect of sweating on heat loss is reduced in humid weather.

Increase in core body temperature leads to shivering.

During rapid sweating, the sweat has very low sodium content.

During the flush stage of fever, the patient feels very cold.

Heating of the anterior hypothalamic preoptic area leads to vascular dilatation of cutaneous blood vessels.