Although

oral administration is convenient to the patient, the drug is completely

destroyed by the digestive juices.

If

two medications produce less than an additive effect, they are called synergistic.

Vomiting

reflex can be stimulated by the cerebrum, especially when a person experiences

pain, smells something repulsive, or sees something ugly (for some patients it

can be blood).

The

vomiting center is located within cerebellum, namely medulla oblongata.

While

vomiting, the heart rate goes down.

The

epiglottis does not close while a person is vomiting.

In

motion sickness, vestibular nuclei are not stimulated.

While

vomiting, the lower esophageal sphincter relaxes, the diaphragm and abdominal

muscles contract.

Muscarinic

receptor antagonists block the receptors in the

The

vomiting center contains muscarinic receptors which, when are stimulated,

trigger vomiting.