What is posterior commissure?
The posterior commissure (PC) is a transversely-oriented commissural white matter tract that connects the two cerebral hemispheres along the midline. It is a very important anatomical landmark which is thought to play a role in the visual system, however its functions are still largely unknown.
Where is the posterior larynx?
It sits just above the trachea and is continuous with the oropharynx (the portion of the throat posterior to the oral cavity) above. The larynx conducts air into the lower respiratory tract and closes off the airway especially during swallowing to prevent aspiration of food.
What is posterior glottis?
The posterior glottis is an area of the larynx previously referred to by the terms ‘posterior commissure’ and ‘interarytenoid’; these are poorly defined and a new definition of this unique area of the larynx is provided. Within the text is a series of experiments performed on nearly 300 larynges.
What is posterior commissure hypertrophy?
Presence of posterior commissure hypertrophy can be used as a screening tool to diagnose LPR, but its disap- pearance or absence cannot be used reliably as a clinical marker for response to therapy. It has to corroborate with other findings.
What are posterior fibers?
Anatomical terms of neuroanatomy The posterior commissure (also known as the epithalamic commissure) is a rounded band of white fibers crossing the middle line on the dorsal aspect of the rostral end of the cerebral aqueduct. It is important in the bilateral pupillary light reflex.
What causes glottis?
Epiglottitis is usually caused by an infection from Haemophilus influenza type b (Hib) bacteria, the same bacteria that cause pneumonia and meningitis. Transmission of the bacteria is the same as with the common cold: Droplets of saliva or mucus are spread into the air when a carrier of the bacteria coughs or sneezes.
What is the function of glottis?
The glottis, a slit-like opening on the floor of the pharynx, is a valve that controls airflow in and out of the respiratory passages. The glottis opens directly into a boxlike larynx.