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23 Cards in this Set
- Front
- Back
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how long is the embryonic periods
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first 8 weeks ---> then it's an embryo wk 9 till birth
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6 stages of embryogenesis
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gametogenesis
fertilisation cleavage gastrulation morphogenesis organogenesis |
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what's gametogenesis
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first stage of embryogenesis.
germ cell FORMATION (oogenesis & spermatogenesis) |
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what's cleavage- what does it form
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3rd stage in embryogenesis
period of RAPID cell division forms MORULA then BLASTULA |
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what's gastrulation
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4th stage of embryogeneis
formation of GERM lagyers: ecto-, meso- and endo-) body AXIS developed |
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what stage in morphogenesis is the body plan mapped out via FOLDING (tube within a tube)--3D
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morphogenesis
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what stage in embryogenesis is the PRIMORDIA of all organ systems developed
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organogenesis
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which stage in embryogenesis is the morula and blastula developed
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cleavage
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germ layers are developed at what stage
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gastrulation (also develops body AXIS)
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what terms are used for the embryo to describe superior and inferior parts
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cranial and caudal
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what;s induction
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ability of one cell type to cause another to differentiate (protein conc and association influences this)
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which stage in embryogenesis does the embryo know which way is up and down (axis)
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gastrulation (also develops germ layers)
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wheres teh site of fertilisation
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ampulla
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normal sites for implantation
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middle/ upper dorsal uterine wall
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what structures does the ectoderm give rise to
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epidermis of SKIN
CNS |
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what does the ENDOderm give rise to
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liver, lungs, intestines
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what 3 parts does the mesoderm divide into
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PARAXIAL (medial, next to axis of embryo- noctocord)
INTERMEDIATE LATERALmesoderms |
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what does the PARAXIAL part of the mesoderm give rise to (3)
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AXIAL skeleton, parts of dermis, SKELETAL muscle
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what does the intermediate mesoderm develop into (2 system)
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UROGENTIAL systems
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what does the lateral mesoderm plate develop into (2 parts)
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SOMATIC: body wall, most of dermis, limbs
VISCERAL: mesothelium, organs, CVS |
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which layer is teh CVS derived
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lateral plate of the MESODERM
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which layer gives the AXIAL, parts of dermis & VOLUNTARY muscle
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paraxial part of the mesoderm
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5 parts of the heart tube, superior to inferior
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truncus arteriosus, bulbus cordis, primitive ventricle, primitive artria, sinus venosus
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