Exam 25: Salivary Glands

Intercalated ducts conserve water and electrolytes because ions such as sodium and potassium are reabsorbed by capillaries and lymphatic vessels surrounding striated interlobular ducts.

Each of the following accurately describes intercalated ducts EXCEPT one. Which is the EXCEPTION?

Serous acini have ions similar to mucous acini but do not have mucins. A mucous secretion is thinner and more watery.

Mucous secretions contain 99% water.

Each of the following is true of salivary duct systems EXCEPT one. Which is the EXCEPTION?

Secretory function can be modified by each of the following EXCEPT one. Which is the EXCEPTION?

The demilune surrounds the salivary gland and aids in the secretion of saliva. This structure has a muscular component and long cellular projections.

Which acini are MOST likely to have serous demilunes?

Surrounding the acini are myoepithelial cells that inhibit salivary secretion because these cells have the ability to contract like a muscle.

Acini are the

The acinus with the largest lumen is the serous type.

Secretory control comes from the central nervous system. Control of secretion is tied to chewing, taste, and smell.

During formation, the "future saliva" is packaged by a membrane within the

Each of the following is carried in the saliva EXCEPT one. Which is the EXCEPTION?

With electron microscopy mucous cells appear empty and frothy because they stain exceptionally well.

Which ducts have mitochondria that appear striped when stained (select all that apply)?

Which structure is the MOST likely to break down starches into long-chain sugars?

Which of the following are functions of saliva (select all that apply)?

Serous acinus secretions are characterized by each of the following EXCEPT one. Which is the EXCEPTION?

The primary function of excretory ducts is to carry saliva. However, the striated interlobular ducts also modify salivary content as the fluid passes through them.