-
ommatidium). An
ommatidium contains a
cluster of
photoreceptor cells surrounded by
support cells and
pigment cells. The
outer part of the
ommatidium is...
-
collection of ommatidia, each with its own lens,
light will
enter each
ommatidium instead of
using a
single entrance point. The
individual light receptors...
- make up
compound eyes. Additionally, not all
invertebrate ocelli and
ommatidium have
simple photoreceptors. Many have
various forms of
retinula (a retina-like...
- ommatidia,
columns that are
usually hexagonal in
cross section. Each
ommatidium is an
independent sensor, with its own light-sensitive
cells and often...
-
united by
cryptonephric Malpighian tubules of the
normal type, a cone
ommatidium with open rhabdom, and lack of
functional spiracles on the
eighth abdominal...
- 800 unit
ommatidia which are
repeated in a
symmetrical pattern. Each
ommatidium contains 8
photoreceptor cells, each of
which forms a
rhabdomere (rhabdomeres...
-
apparatus Feature detection Infrared sensing in
snakes Monocular deprivation Ommatidium Palpebral (bone)
Pseudopupil Rhopalium Underwater vision Visual perception...
- 15-17mm.
Females are
slightly larger than males. They have one pair of
ommatidium and one pair of
compound eyes, both of
which are red. The
antennae have...
-
evolution of the
ommatidium in the eyes.
Different environmental pressures and
predators may have led to the
adaptation of
ommatidium structures within...
- into the
ordered hexagonal pattern seen in more
derived arthropods. Each
ommatidium feeds into a
single nerve fiber. Furthermore, the
nerves are
large and...
