Embyology Flashcards
(19 cards)
What goes through more development before final form, sperm or egg?
Sperm
Starting point of sperm and egg
Spermatogonium and oogonium
Result of meiosis in spermatogenesis and oogenesis
4 sperms
1 ovum, 3 polar bodies
Progression through early cell division
Zygote
Blastocyst
Morula
3 cell layers formed by week 3 of development
Ectoderm
Mesoderm
Endoderm
Outer lining of cells of blastocyst
Trophoblast
3 parts that mesoderm divides into
Paraxial mesoderm
Intermediate plate mesoderm
Lateral plate mesoderm
What is derived from ectoderm?
Epidermis of skin
Neural tube
What is derived from endoderm?
Gut
Respiratory
What is derived from paraxial mesoderm?
Dermis of skin
Muscles
Bones
What is derived from intermediate plate mesoderm?
Urogenital system
What is derived from lateral plate mesoderm?
Peritoneum
Pleura
Cavities
What structure is respiratory system derived from?
Foregut
What structure is visceral pleura derived from?
Splanchnic layer of lateral plate mesoderm
What structure is parietal pleura derived from?
Somatic layer of lateral plate mesoderm
Development of diaphragm
4 mesodermal structures
Septum transversum
Pleuroperitoneal folds
Skeletal muscle ingrowth
Dorsal mesentery of oesophagus
What are heart tubes formed from?
Lateral plate splanchnic mesoderm
What layers of pericardium are formed from somatic mesoderm?
Parietal layer of serous pericardium
Fibrous pericardium
What layer of pericardium is formed from splanchnic mesoderm?
Visceral layer of serous pericardium
