Saliva is characterized by all the following except:
A)Its concentration of K+ is the same as that in plasma.
B)Its Na+&Clconcentration are lower than those in plasma.
C)Its osmotic pressure and PH are lower than their corresponding values in plasma.
D)It exerts antibacterial action.

Question

Quizplus · Accepted Answer

Saliva's concentration of K+ is higher than that in plasma, not the same, making option A incorrect. Saliva indeed has lower concentrations of Na+ and Cl- compared to plasma, has a different osmotic pressure and pH (usually higher pH), and exerts antibacterial actions through various enzymes and antibodies.

Saliva Is Characterized by All the Following Except