PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
pons
|
|
|
medulla
|
|
|
cerebrum
|
|
|
interbrain
|
Detailed explanation-1: -The medulla oblongata is a part of the hindbrain and controls the involuntary activities of the body like coughing, sneezing and swallowing.
Detailed explanation-2: -The sneezing reflex may be divided in two phases. The first is a nasal or sensitive phase, following stimulation of the nasal mucosa by chemical or physical irritants. The afferent pathways are through the olfactory and ethmoidal nerves, which converge in the putative “sneezing centre” in the medulla.
Detailed explanation-3: -Your medulla oblongata is the bottom-most part of your brain. Its location means it’s where your brain and spinal cord connect, making it a key conduit for nerve signals to and from your body. It also helps control vital processes like your heartbeat, breathing and blood pressure.
Detailed explanation-4: -The fourth ventricle of the brain hosts the vomiting centre. The floor of the fourth ventricle contains an area called the chemoreceptor trigger zone (CTZ). It is also called the area postrema. When the CTZ is stimulated, vomiting may occur.