Mouth and esophagus Flashcards
1
Q
what is contained in serous saliva?
A
salivary enzymes such as alpha amylase
2
Q
what is contained in mucous saliva?
A
water, electrolytes, phospholipids, mucin
3
Q
what NT promotes fluid and enzyme secretion in salivary glands?
A
Ach (via muscarinic receptors, calcium)
4
Q
how are salivary glands regulated?
A
Ach regulates chloride channel - secretion of chloride allows sodium and water to be dragged into lumen of acinar cell
5
Q
what is the mechanism for secretion of water in salivary glands?
A
- sodium and chloride are reabsorbed, whereas water is left in the lumen 2. bicarb is also secreted, leading to increased pH
6
Q
secondary peristalsis occurs in response to what types of stimulation?
A
mechanoreceptor, low pH
