Biology Questions
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At 32 weeks alveolocapillary membranes sufficiently thin to all for gas exchange are characteristics of which period o lung development?
The Pseudoglandular Period in lung development occurs between......
T or F. The Splanchnic/ visceral layer, forms the walls of the gut tube.
By week 24 of this period of lung development, 3-6 primordial alveolar ducts have formed
The Terminal Sac Period in lung development occurs between......
The _________ fissure is present in both lungs however the _________ fissure separates the superior and middle lobe of the Right lung.
T or F. During the Canalicular Period, Respiration (though still immature) is possible due to tissue being well vascularized and the existence of some thin-walled terminal sacs
The lung bud continues to branch 6 more times after birth even up until the age of ________
The Parietal Mesoderm forms the___________, lining the inside of the body wall
The Canalicular Period in lung development occurs between......
T or F. The lung bud cease to branch after birth
This specific growth factor stimulates / regulate the differentiating / branching of the lung bud
The Visceral Mesoderm forms the___________, surround the outside of the lungs.
The Intraembryonic Cavity eventually forms the _________ cavity of the fully developed fetus.
The bud branches almost 17 times with a _____________ period of time
At birth, the tracheal bifurcation is located at what vertebral level
All elements of the lungs have been formed but gas exchange is not yet possible. Which period of lung development is this describing?
When does the Respiratory Diverticulum (lung buds) begin to appear?
The Splanchnic mesoderm covers the ___________ while the Somatic mesoderm covers the _________.
The space between the splanchnic and somatic mesoderm layers (of the Lateral Plate) becomes the __________