Interaction Drug-Receptor

02Sep08

Characteristic of Autonomic Nervous System

 

Flight or fight response = Sympathetic

Rest or Digest response = Parasympathetic

 

 

Organ/system

Sympathetic

Parasympathetic

Eye

Contractions of iris radial muscle (pupil dilates)

Contractions of iris sphincter muscle (pupil constricts), contractions of ciliary muscle (for near vision)

Tracheal/Bronchiol

Dilates

Constricts, Increased secretions

Lacrimal Glands

  •  

Stimulates tears

Salivary glands

Thick, viscous secretion

Copious, watery secretion

Heart

Increase heart rate, increase contractility

Decrease heart rate, decrease contractility

Adrenal medulla

Secretes adrenaline/noradrenaline

Kidney

Secretion of renin

Gastrointestinal

Decrease in motility/tone, contraction of sphincters

Increase motility/tone

Ureters & Bladder

Relaxes detrusor, contraction of trigone & sphincter

Contraction of detrusor, relaxation of trigone & sphincter

Male Genitalia

Stimulates ejaculation

Stimulates erection

Female Genitalia

Relaxation of uterus

Vessels of skeletal muscle

Dilatation

Vessels of skin, internal organs

Constrictions

 




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