Cunningham's textbook of anatomy |
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Page 18
Head Body Tail End piece The anterior centrosome of the spermatid becomes Nucleus - Anterior centrosome Posterior centrosome -- The axial sheath is a thin layer of protoplasm immediately surrounding the axial filament .
Head Body Tail End piece The anterior centrosome of the spermatid becomes Nucleus - Anterior centrosome Posterior centrosome -- The axial sheath is a thin layer of protoplasm immediately surrounding the axial filament .
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As the embryonic area is the the ecto - mesodermal and the entodermal vesicles it is , at As growth continues the area becomes oval , and a linear streak , appears in that part of the oval which becomes the area ( Fig .
As the embryonic area is the the ecto - mesodermal and the entodermal vesicles it is , at As growth continues the area becomes oval , and a linear streak , appears in that part of the oval which becomes the area ( Fig .
Page 25
It has already been noted that a portion of the inner mass of the human zygote becomes converted directly into mesoderm which may be called , for convenience , primary mesoderm . It was stated also that the wall of the larger of the two ...
It has already been noted that a portion of the inner mass of the human zygote becomes converted directly into mesoderm which may be called , for convenience , primary mesoderm . It was stated also that the wall of the larger of the two ...
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life both apertures are closed and , for a time , the neural canal becomes a completely closed cavity . As the margins of the neural groove rise and converge they carry with them the adjacent ectoderm to which they are attached ...
life both apertures are closed and , for a time , the neural canal becomes a completely closed cavity . As the margins of the neural groove rise and converge they carry with them the adjacent ectoderm to which they are attached ...
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their cells give off processes which become nerve - fibres . ... Shortly after the three segments of the brain are defined , and before it becomes a closed tube , a vesicular evagination forms at the cephalic end of each lateral wall of ...
their cells give off processes which become nerve - fibres . ... Shortly after the three segments of the brain are defined , and before it becomes a closed tube , a vesicular evagination forms at the cephalic end of each lateral wall of ...
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Table des matières
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Expressions et termes fréquents
angle anterior appears arch arises artery articular articulation aspect attached backwards base becomes body bone border brain branch called canal capsule cartilage cavity cells centre cerebral cervical close column consists continuous corpus corresponding covered crest curved deep directed distal dorsal edge embryo enter extends extensor external extremity facet fascia fasciculus fibres flexor floor foramen forwards fossa fourth front frontal gray matter greater groove head inferior insertion internal joint lamina lateral layer length lies ligament limb longus lower margin medial membrane mesoderm middle movements muscle nasal nerve neural neural tube notch nucleus obliquely occipital opening orbital origin passes placed plane plate portion position posterior present primitive proximal region root seen segments separated side sphenoid spinal medulla superior surface temporal tendon termed thin third tract transverse tube tubercle upper upwards usually ventral ventricle vertebral wall whilst