Question

1) During meals saliva is primarily from which gland? Parotid, sublingual, or submandibular

2) Which of the following will lead to the greatest increase in saliva production? norepinephrine alone, acetylcholine alone, acetylcholine and VIP, or VIP alone

3) Which of the following most closely describes the tonicity of saliva during meals compared to normal plasma? hypertonic, hypotonic, or isotonic

4) Which of the following most closely describes the tonicity of saliva at rest compared to normal plasma? hypertonic, hypotonic, or isotonic

5) Which 2 ions have a higher concentration in saliva compared to normal plasma?

Answer 1

1) During meals saliva is primarily from which gland?

Parotid glands

2) Which of the following will lead to the greatest increase in saliva production?

acetylcholine and VIP

Explanation:

parasympathetic and sympathetic stimulation can increase flow of saliva.

Parasympathetic activation occurs via acetylcholine.

VIP means Vasoactive intestinal peptide

Combination of both will lead to great increase in saliva secreation.

3) Which of the following most closely describes the tonicity of saliva during meals compared to normal plasma?

hypertonic

4) Which of the following most closely describes the tonicity of saliva at rest compared to normal plasma?

hypotonic

5) Which 2 ions have a higher concentration in saliva compared to normal plasma?

K ⁺ and HCO₃^-