Saliva 4 - salivary biology 2

Question 1

What are the roles of the acini and the striated ducts in terms of secretion?

Answer 1

acini produces secretion, striated ducts significantly modify secretion

Question 2

What are the constituents of saliva?

Answer 2

• water
• electrolytes
• organic components

Question 3

What are the electrolytes found in saliva?

Answer 3

ions: sodium, potassium, chloride, bicarbonate

Question 4

What are the 4 stages of mechanisms and control of salivary secretion?

Answer 4

• initial acinar secretion of H2O and electrolytes (primary salivary secretion)
• ductal modification of primary saliva
• secretion of organic components
• control of secretory mechanisms

Question 5

At rest, what is an acinar cell doing?

Answer 5

active pumping of ions by sodium-potassium pumps to maintain concentration gradient between acinar cell and connective tissue at rest