Which of the following is characteristic of saliva?
Saliva is characterized by: Hypotonicity High HCO3- concentration (relative to plasma) because of secretion of HCO3- into saliva by the ductal cells. Presence of a-amylase and lingual lipase (not proteases) Because control of saliva production is parasympathetic, it is abolished by vagotomy.
Hypotonicity relative to plasma
A lower HCO3- concentration than plasma
The presence of proteases
Secretion rate that is increased by vagotomy
Gastrointestinal System