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URL:https://www.learndesk.us/class/5691831830446080/lesson/5ac64690759b4dd020fbbd35a5cef7de?ref=outlook-calendar
SUMMARY:12.2 The Oesophagus
DTSTART;TZID=America/Los_Angeles:20260407T190000
DTEND;TZID=America/Los_Angeles:20260407T200000
LOCATION:https://www.learndesk.us/class/5691831830446080/lesson/5ac64690759b4dd020fbbd35a5cef7de?ref=outlook-calendar
DESCRIPTION: The oesophagus is a muscular tube about 25 cm in length, which conveys food and fluid to the stomach. There are four layers comprising the oesophagus. The inner mucosal lining is the stratified squamous epithelium. The submucosal layer contains glands that secrete lubricant. The muscle coats of the oesophagus consist of an inner circular and an outer longitudinal coat. The upper 1/3 of the oesophagus has striated skeletal muscle. The middle 1/3 is mixed skeletal and smooth muscle, while the lower one third is smooth muscle. The outermost coat of the oesophagus is made up of connective tissue. Except during the passage of food, the oesophagus is flattened and closed. The cardiac sphincter separates the oesophagus and the stomach.

https://www.learndesk.us/class/5691831830446080/lesson/5ac64690759b4dd020fbbd35a5cef7de?ref=outlook-calendar
STATUS:CONFIRMED
SEQUENCE:3
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