| Embryology | Answer |
|---|
| before the foramen primum closes, enlarging perforations form the 2nd single hole called _______ develop in the septum primum. | |
| true or false: After birth, pressure is greater in the right side of the heart than in the left. | |
| the first crescent-shaped projection of heart tissue begins to separate the right and left atrias. | |
| The connective tissue, cartilage and smooth muscle of the trachea are derived from which germ layer? | |
| Oxygenated blood is brought from the placenta to the embryonic heart via the | |
| landmark in the adult heart that marks where the valve of the foramen ovale closed over the foramen ovale | |
| True or False: In the developing fetus the pressure on the right side of the heart is less than that of the left. | |
| the period during lung development in which the tissues are not well vascularized and the bronchopulmonary segments are not highly developed. The respiratory system is too immature | |
| the heart beat begins at day__? | |
| the Adult remnant of the umbilical vein is the ______. | |
| when does the terminal sac period occur? (weeks) | |
| the trabeculae of the left and right ventricles are formed from which bulge on the embryonic heart tube | |
| visceral pleura is formed from _____ mesoderm. | |
| A solid interstrial septum is formed how many months after birth? | |
| the pseudoglandular period of lung developmetn occurs during weeks ________. | |
| after partial degeneration of the septum primum, the lower half remains forming the ___ __ __ _____ ____. | |
| Adult remnant of the ductus venosus is the _______. | |
| the period in which the more terminal sacs grow in number and develop. Gas exchange can occur in this period due to the thinning of the respiratory epithelium and the development o | |
| separates the thoracic cavity from the abdominal (peritoneal) cavity during embryonic development | |
| in the developing embryo blood exits the heart via the | |
| last period in lung development | |
| the first opening in the septum primum that allows blood to be shunted from the right atrium over to the left in the embryo is known as the _______ | |
| occurs when the AP septum fails to align properly with the AV septum resulting in a pulmonary stenosis, overriding aorta, interventricular septal defect, and hypertrophy of the rig | |
| parietal pleura is formed from _____ mesoderm. | |
| the anterior portions of the left and right atria are formed from which bulge on the embryonic heart tube | |
| The tissue that separates the laryngotracheal tube from the esophagus. The septum is formed by the fusion of the lateral tracheoesophageal folds. | |
| connection between the laryngotracheal tube and the esophagus is known as | |
| what percentage of alveolar development occurs after birth? | |
| these aveolar cells allow for gas exchange | |
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