- two ways that
divide the
whole animal kingdom into two-halves (see:
Embryological origins of the
mouth and ****). If in the blastula, the
first pore,...
-
Prenatal development (from
Latin natalis 'relating to birth')
involves the
development of the
embryo and of the
fetus during a
viviparous animal's gestation...
- The
theory of recapitulation, also
called the
biogenetic law or
embryological parallelism—often
expressed using Ernst Haeckel's
phrase "ontogeny recapitulates...
-
cause of
osteomas is uncertain, but
commonly accepted theories propose embryologic, traumatic, or
infectious causes. They are
present in Gardner's syndrome...
-
muscle from
which all
chordae tendineae originate. It is
caused by an
embryologic failure of
papillary muscles to
divide into two
normally distinct columns...
- anc****d. The main
tissues that make up an
organ tend to have
common embryologic origins, such as
arising from the same germ layer.
Organs exist in most...
- to the species,
establishing that
linear evolution could not occur.
Embryological development, in von Baer's mind, is a
process of differentiation, "a...
- The left and
right brachiocephalic veins (previously
called innominate veins) are
major veins in the
upper chest,
formed by the
union of the ipsilateral...
-
clefts are rare
congenital malformations that
result from
defective embryologic fusion of
paired mesodermal bands in the
ventral midline. They may be...
-
relatives have been
debated since 1890.
Studies based on anatomical,
embryological, and
paleontological data have
produced different "family trees". Some...
