Test 2: laxatives Flashcards
1
Q
how do laxatives work?
A
they increase fluid content of feces to facilitate passage
2
Q
2 types of laxatives
A
- irritant laxatives
- bulk laxatives
3
Q
2 examples of irritant laxatives
A
- castor oil
- phenolphthalein
4
Q
how do irritant laxatives work? (2)
A
- irritate the intestinal mucosa
- increase fluid secretions and peristaltic activity
5
Q
how do bulk laxatives work?
A
- they osmotically pull water into the intestinal lumen
6
Q
2 examples of bulk laxatives
A
- psyllium (fiber)
- magnesium salts (these pull water in) - Epsom salt
7
Q
the problem with bulk laxatives?
A
salts may dehydrate the animal or cause mineral imbalance
8
Q
absorption of minerals form intestine may cause
A
electrolyte imbalance
