Functions Of Parasympathetic Nervous System

Head and Neck

Oculomotor (III) nerve

pupilloconstriction

Contractioin ciliary muscle

increase in power of the lens

reduces intraocular pressure.

Facial (VII) nerve

Salivary glands : True secretion & VD

Lacrimal and nasal glands : secretion and VD.

Anterior 2/3 of the tongue (VD).

Glossopharyngeal (IX) nerve

Salivary glands : True secretion & VD

posterior third of the tongue VD

Pelvic nerve

Female genitalia

erection of the clitoris

Male genitalia

erection and egaculation

Bladder

micturation

Rectum

defecation

Thorax

Heart

inhibition all cardiac properties

↓ heart rate

↓ conduction velocity through atrioventricular node

↓ power of contraction

Lung

Bronchoconstriction

increase bronchial secretion of pulmonary blood vessels.

Abdomen

motor to muscles

Secretory to the glands

Gall bladder