Nausea and Emesis Flashcards
1
Q
what is nausea?
A
a highly unpleasant sensation felt in the throat and stomach
2
Q
what can relieve nausea?
A
vomiting
3
Q
what does retching involve?
A
rhythmic reverse peristalsis of the stomach + oesophagus
involuntary contraction of the abdominal muscles and the diaphragm
upper intestinal contractions
4
Q
what does retching NOT involve?
A
efflux of vomitus
5
Q
what is emesis?
A
vomiting
6
Q
what is vomiting?
A
forceful expulsion of gastric/intestinal contents out of the mouth
7
Q
what does vomiting start with?
A
a forceful inspiration
closure of the glottis
elevation of the soft palate to close the airways and the nasal passage
8
Q
what coordinates vomiting?
A
the vomiting centre (VC)
9
Q
where is the VC found?
A
the medulla oblongata of the brain stem
