The dorsal (back) surface of the embryo is toward the top of this page, while the ventral (front) surface is toward the bottom.(Neural tube is in green.) In the developing chordate (including vertebrates), the neural tube is the embryo's precursor to the central nervous system, which comprises the brain and spinal cord.A feeding tube may also be used to give patients medications if necessary.The tube is designed to prevent dehydration and malnutrition in patients with dysphagia. Before feeding tubes were invented, patients with dysphagia were carefully fed by loved ones and nursing home staff.Around 200,000 passengers are expected to use the Night Tube when all five lines are operational.Transport for London predicts the service will cut journey times by an average of 20 minutes, benefiting people who previously used buses to travel in the early hours of the morning.Night Tube services on the Northern Line will launch on November 18, it has been announced.
The edges of the neural plate start to thicken and lift upward, forming the neural folds.
Dementia is the most common cause of this form of dysphagia. In addition, people with advanced dementia may develop a kind of dysphagia in which food passes into the airway and lungs, instead of the stomach, after it is swallowed.
Sometimes this also happens when swallowed food is “regurgitated” or “thrown up.” When food goes into the airway and lungs, this is called “aspiration.” Aspiration can lead to a dangerous, even fatal, lung infection called “aspiration pneumonia.” In many cases, however, patients simply cough up the food, or saliva, and no harm is done.
The neural folds pinch in towards the midline of the embryo and fuse together to form the neural tube.
Heart development refers to the prenatal development of the human heart.
When the opening date of Jubilee line Night Tube service was announced, Mr Khan said: "The launch of the Jubilee line will support thousands more workers like nurses, cleaners, and people who work in our bars and restaurants - many of whom currently take two night buses to get home.