Lungs

Question 1

What is the Laryngotracheal groove?

Answer 1

The site of the future trachea that begins as an out-pouching of the laryngeal tracheal groove.

Question 2

The second step in developement of the laryngeal tracheal groove forms the ______.

Answer 2

Laryngotracheal Diverticulum.
Outpouching of the laryngotracheal groove grows into this larger pouch known as the laryngotracheal diverticulum (AKA early lung buds)

Question 3

Where do the trachea and bronchial buds originate?

Answer 3

The splachnic mesoderm of the lateral plates.

Question 4

Where does the inner lining of the trachea and bronchial buds originate?

Answer 4

The endoderm, from the trilaminar disc.

Note: the trachea and the esophagus are one unit in the beginning to share the endoderm

Question 5

What is the role of the tracheoesophageal septum?

Answer 5

Seperation of the trachea and esophagus via ingrowths that eventually completely separate the two structure.

Question 6

Failure of proper formation of the tracheoesophageal septum can result in:

Answer 6

tracheoesophageal fistula (connection) or atresia (blind pouch)