-
opposite aboral end (from
Latin ab- 'away from') has no
opening from the gut (coelenteron). They are
radially symmetric around the oral-
aboral axis. Having...
-
usually five arms,
though some
species have a
larger number of arms. The
aboral or
upper surface may be smooth,
granular or spiny, and is
covered with overlapping...
- top; the
lower surface is
described as "oral" and the
upper surface as "
aboral".
Several sea urchins, however,
including the sand dollars, are oval in...
-
elongated at the axis of the vase-shaped body. In
solitary polyps, the
aboral (opposite to oral) end is
attached to the
substrate by
means of a disc-like...
- of many
species is
almost radially symmetrical, the main axis is oral to
aboral (from the
mouth to the
opposite end). However,
since only two of the canals...
-
Encope emarginata (
aboral and oral faces) by
Ernst Haeckel (1904)...
-
characterized by a pair of
trailing gelatinous "wings" that
extend beyond the
aboral tip. Like
other comb jellies, the body wall of
nudans consists of an outer...
-
compound ossicles that
articulate with
other ossicles and
protrude from the
aboral (upper)
surface of some sea
stars (and also the test of sea urchins). They...
- away from the host; this is
termed the oral surface. The
other side, or
aboral surface,
attaches to the skin of the host or
other substrate.
There is a...
- withdrawn.
Opposite the
ambulacral groove is an
ambulacral ridge on the
aboral side of each ray,
known as an ambulacrum.
These have
interambulacra between...
