MICROANATOMY

Detailed explanation-1: -Sympathetic stimulation results in the release of noradrenaline, which acts upon alpha-and beta-adrenergic receptors. This results in the following effects: Decreased production of saliva by acinar cells. Increased protein secretion.

Detailed explanation-2: -Parasympathetic stimulation evokes a copious flow of saliva. In contrast, sympathetic stimulation produces either a small flow, which is rich in protein, or no flow at all.

Detailed explanation-3: -The sympathetic nerve supply produces predominantly thicker mucous saliva mainly by the sublingual and partly the submandibular glands. This may occur when in certain situations, fear, stress or anger are aroused. This is also the case during hard physical exercise.

Detailed explanation-4: -The saliva secretion depends on the smell and taste perception of the human body. The autonomic nervous system is divided into two types: Sympathetic nervous system: The sympathetic nervous system controls the salivary secretion with the help of superior cervical ganglion.

Detailed explanation-5: -Parasympathetic stimulation produces copious saliva of low protein concentration while sympathetic stimulation produces little saliva but of high protein concentration and may thus give a sensation of dryness (Carlson, 2000).