1 - oesophagus Flashcards
1
Q
at what thoracic vertebral levels does the thoracic duct cross posterior to the oesophagus?
A
between T7 and T4
2
Q
Describe the type of muscle of the upper oesophageal sphincter and explain why this is unusual
A
is it made up of skeletal muscle
this is unusual because it is under involuntary control
3
Q
Where is the swallowing centre in the brain?
A
medulla
4
Q
What type of muscle mainly controls peristalsis?
A
circular
5
Q
Why is the epithelial transition at the Z-line from stratified squamous to simple columnar ideal?
A
stratified squamous - for wear and tear
simple columnar - easily folded with huge secretory compartments
6
Q
What cells and where is gastrin secreted?
A
G cells in the Pyloric Antrum
