-
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...
-
narrow branches of the
coelom enter each arm, two on the oral side and one
aborally, and pinnules. The
action of
cilia cause there to be a slow flow of fluid...
-
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...
-
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...
- 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...
-
quantity Transverse plane, the
plane orthogonal to the
anteroposterior or oral-
aboral axis
Transverse rotors, a type of
rotorcraft in
which there are two rotors...
- tentacle-base than arm-base, a
recessed club-base, and the
presence of an
aboral tentacle-groove.
Promachoteuthis sulcus is
known from a
single specimen...
- have no heads,
their ends are
described as "oral" (nearest the mouth) and "
aboral" (furthest from the mouth). Most have
fringes of
tentacles equipped with...
- is
concentrated in the
aboral organ,
located opposite the mouth.
Beroe has a
defense response that
retracts the
entire aboral organ inside the body of...
-
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...
