The gag reflex is an involuntary mechanism to prevent asphyxia. During general anaesthesia this reflex is paralysed which is why it is so important to get the airway in place. And to make sure someone hasn't eaten beforehand. Without the gag reflex they could inhale vomits into the lung.it is also known as the pharyngeal reflex which has its roots in the upper medulla.it connects with the glossopharyngeal nerve which is one of the 12 craniofacial nerves leading to the tongue.
Yes it control gag reflex
Medulla Oblongata refers to the lower portion of the brain stem. I am confused as to what you mean by the term Gag Reflex. However, The basic function of this part is control of autonomic functions such as:
Respiration
Blood pressure
vomiting
defecation
heart rate and
reflex arcs.
Respiration
Blood pressure
vomiting
defecation
heart rate and
reflex arcs.
The Hypothalamus controls heart rate & Blood pressure. I didn't realise the Medulla Oblongata does as well...