- A
proctodeum is the back
ectodermal part of an
alimentary canal. It is
created during embryogenesis by a
folding of the
outer body wall. It will form the...
- of the anal canal. Developmentally, this line
represents the hindgut-
proctodeum junction. It is an
important anatomical landmark in humans, and several...
- a dog
Formation of **** in proto- and
deuterostomes Details Precursor Proctodeum System Alimentary,
sometimes reproductive Artery Inferior rectal artery...
-
deoxygenated blood to the placenta. It is
externally continuous with the
proctodeum and
internally continuous with the cloaca. The
embryonic allantois becomes...
- (right)
Scheme of
digestive tract, with ****
marked Details Precursor Proctodeum System Alimentary Artery Inferior rectal artery Vein
Inferior rectal vein...
- (mermaid syndrome). In reptiles, the
cloaca consists of the urodeum,
proctodeum, and coprodeum. Some
species have
modified cloacae for
increased gas exchange...
-
foregut (stomatodeum)(27,) the
midgut (mesenteron)(13), and the
hindgut (
proctodeum)(16). In
addition to the
alimentary canal,
insects also have
paired salivary...
-
instead of
blood when erect. When not co****ting, it is
hidden within the
proctodeum compartment within the cloaca, just
inside the vent.
Female birds have...
-
deoxygenated blood to the placenta. It is
externally continuous with the
proctodeum and
internally continuous with the cloaca. The
embryonic allantois becomes...
- (one-third) is
derived from
ectoderm around the
proctodeum. Ectoderm, in the
region of the
proctodeum on the
surface of part of the cloaca, proliferates...
