0071509674.pdf
1 High-Yield Facts Embryology Embryological development is divided into three periods: ThePrenatal Periodconsists of gamete form ...
Oogenesis Oogenesis begins in the fetal period in females and is a discontinuous process involving mitosis, meiosis, and maturat ...
Axial mesodermis located in the midline and forms the notochord. Paraxial mesodermformssomites.Somites are divided into scleroto ...
Ectoderm Derivatives Formation of the primitive central nervous system is induced in the ecto- derm layer by cells forming the n ...
MATURATION OF THE CENTRAL NERVOUS SYSTEM Both neurons and glia develop from the original neurectoderm forming the neural tube. M ...
(apoptosis) are hypothesized mechanisms for the congenital dysmorphologies associated with FAS. PERIPHERAL NERVOUS SYSTEM Sensor ...
Pituitary The anterior portion of the pituitary is derived from oral ectoderm arising from the roof of the oral cavity (Rathke’s ...
The“Tetralogy of Fallot”is the most common defect of the conus arteriosus/truncus arteriosus and is due to unequal division of t ...
Thevitelline arteriesconnect the yolk sac to the abdominal dorsal aorta. They will form the arteries of the GI tract: celiac, su ...
Peristalsis begins in week 10 when neural crest cells invade the mus- cular layer to form the enteric nervous (autonomic) system ...
DEVELOPMENT OF THE URINARY SYSTEM Epithelial structures of the urinary system are derived from two sources: intermediate mesoder ...
12 Anatomy, Histology, and Cell Biology Sertoli cells produce Müllerian inhibiting substancewhich causes the apoptosis of parame ...
The yolk sac gives rise to the first blood islandsthat will form the vitelline vessels. Passive immunity is transfered to the fe ...
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High-Yield Facts Histology and Cell Biology CELL MEMBRANES Cell membranes consist of a lipid bilayerand associated proteins and ...
witht-SNAREon the cell membrane and requires Rab GTPase-activity, linking to tethering proteins, and eventually to a receptor pr ...
which is an open form of DNA that is actively transcribed, and hete- rochromatinthat is quiescent. There is a sequential packing ...
transcription of cell cycle genes, allowing cells to traverse the G 1 /S inter- face.Mutations in Rb occur in tumors;a mutation ...
directly between cells. Apical specializations are prominent in epithelia and includemicrovilli that increase surface area; ster ...
bone; and osteoclasts,which resorb bone by acidification. Osteoclastic activity uses protons(H+) derived from carbonic acid form ...
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