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Gill slits are
individual openings to
gills, i.e.,
multiple gill arches,
which lack a
single outer cover. Such
gills are
characteristic of cartilaginous...
-
pharyngeal slits. It is
postulated that this is how
pharyngeal slits first ****isted in filter-feeding, and later, with the
addition of
gills along their...
-
vertebrates typically develop in the
walls of the pharynx,
along a
series of
gill slits opening to the exterior. Most
species employ a counter-current exchange...
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delicate gills. A
smaller opening, the spiracle, lies in the back of the
first gill slit. This
bears a
small pseudobranch that
resembles a
gill in structure...
- slot-like body
openings called gill slits that lead from the
gills, but the
Hexatrygonidae have six.
Batoid gill slits lie
under the
pectoral fins on...
- to the environment,
rather than set
inside the
pharynx and
covered by
gill slits, as they are in most fishes. Instead, the
respiratory organs are set on...
-
circulatory system 8 =
atriopore 9 =
space above pharynx 10 =
pharyngeal slit (
gill) 11 =
pharynx 12 =
vestibule 13 = oral
cirri 14 =
mouth opening 15 = gonads...
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oblique groove in
front of the eye and the
scales to the rear of the
gill slit are large. The
depth of the body fits into the
standard lengthbetween...
-
about twice the head length. In general,
three external gills are
inserted posterior to the
gill slits and
above the
pectoral fins. It has
cycloid scales embedded...
- fish and many fish in oxygen-poor
water use
other methods, such as
their gills or
their skin to
breathe air.
Amphibious fish may also have eyes adapted...
