All Flashcards
What is tetralogy of fallot?
rare congenital heart defect, composing of 4 parts: A large ventricular septal defect
Pulmonary stenosis
Right ventricular hypertrophy
An overriding aorta
What stage of lung maturation does branching to form terminal bronchioles occur at?
Pseudoglandular
At what stage of lung maturation do alveoli mature?
alveolar
At what stage of lung maturation are terminal sacs formed, and do capillaries establish close contact?
saccular
At what stage of lung maturation are respiratory bronchioles and alveolar ducts formed?
Canalicular
At what stage of lung maturation do repiratory diverticulum form, and does initial branching occur to give lungs, lobes and segments?
Embryonic
What is gastrulation?
formation of germ layers
What is morphogenesis?
formation of body plan, folding occurs
What is organogenesis?
primordia of all organ systems
What is induction?
Ability of one cell type to cause another to differentiate (directly or at a distance)
What is compaction?
Decrease in cell mass with decrease in dimension
Increase in cell number with no increase in dimension
What does the ectoderm become?
Epidermis of Skin
Nervous System
What does the endoderm become?
Lining of the gut tube
Lining of respiratory tract
Which septum formed is more flexible, the septum primum or septum secondum?
primum
What happens in probe patent foramen ovale?
Septum primum and septum secundum fail to fuse
Mixing of blood prevented due to pressure difference
