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Block 1 Germ Layers
BrownMed
22
Anatomy
Graduate
08/26/2010

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Cards

Term
________ of cells from the ___________ forms the primitive ________ and replaces the __________
Definition
Ingression - epiblast - streak - hypoblast
Term
Hypoblast forms the...
Definition
umbilical cord, yolk sac
Term
Which forms the ectoderm - hypoblast or epiblast? How about the mesoderm? The endoderm?
Definition
Epiblast
Term
(General) ectoderm forms...
Definition
all nerve and some epithelial tissues
Term
(General) Mesoderm forms...
Definition
all muscles, all connective tissue (except for some in the head, which is formed by neural crest cells), and the epithelia in the urogenital and cardiovascular systems.
Term
(General) Endoderm forms...
Definition
some epithelial tissues
Term
(General) Nerve fibers formed from...
Definition
Ectoderm
Term
(General) Muscle formed from...
Definition
Mesoderm
Term
(General) Connective tissue formed from...
Definition
mesoderm
Term
(General) Epithelium formed from...
Definition
ectoderm, endoderm, mesoderm
Term
(6) Surface ectoderm forms...
Definition
Epidermis, epidermal derivatives: hair, fingernails, sweat glands, mammary glands, tooth enamel.
Term
(2) Neural tube forms...
Definition
All CNS, both neurons and glial cells; axons of motor neurons w/ cell bodies in CNS
Term
(6) Neural crest cells migrate to...
Definition
All of the PNS, both neurons and glial cells; melanocytes, head connective tissue, adrenal medulla, tooth dentine, great vessels of the heart
Term
Neur-ectoderm =
Definition
neural crest cells and neural tube
Term
(5) Endoderm forms...
Definition
Epithelium of gut tube and its derivatives: lungs, trachea, liver, pancreas
Term
3 subcategories of paraxial mesoderm:
Definition
myotome, dermatome, sclerotome
Term
(2) Somatic lateral plate mesoderm forms...
Definition
most connective tissues and smooth muscle
Term
(3) Intermediate mesoderm forms...
Definition
gonads, kidneys, ducts
Term
(4) Splanchnic lateral plate mesoderm forms...
Definition
ALL cardiovascular tissues, most connective tissues and smooth muscle of endoderm-lined organs, epithelial linings of body coelom
Term
(2) Sclerotome cells form...
Definition
vertebrae and ribs
Term
Dermatome forms...
Definition
dermis
Term
(2) Myotome forms...
Definition
Epimere - muscles of back, hypomere - muscles of body wall + limbs
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