- The
prothorax is the
foremost of the
three segments in the
thorax of an insect, and
bears the
first pair of legs. Its prin****l
sclerites (exoskeletal...
- The
prothoracic glands are
either of a pair of
endocrine glands located in the
prothorax of
certain insects that
regulate molting. They have an ectodermal...
- Papilionidae,
contain an osmeterium, a Y-shaped
protrusible gland found in the
prothoracic segment of the larvae. When threatened, the
caterpillar emits unpleasant...
-
response to
environmental stimuli and as its name
implies PTTH acts on the
prothoracic glands,
which respond by
releasing molting hormone (an ecdysteroid) into...
- the
major insect molting hormone 20-hydroxyecdysone,
secreted from the
prothoracic glands. It is of
steroidal structure.
Insect molting hormones (ecdysone...
-
Teeth in
avian dinosaurs (birds).
Dewclaws in dogs.
Reappearance of
prothoracic wings in insects.
Reappearance of
wings on
wingless stick insects and...
- or
flipping over are unimpaired. The
first sting is
delivered to the
prothoracic ganglion (m**** of
nerve tissue)
which causes a 2- to 3-minute paralysis...
-
neurosecretory cells in the brain, the
corpora cardiaca,
corpora allata and the
prothoracic glands.
There are
several key
hormones involved in the
regulation of...
- in all
papilionid larvae, in all stages. The
organ is
situated in the
prothoracic segment and can be
everted when the
larva feels threatened. The everted...
-
conjunction with the
pygidial glands are the
prothoracic glands,
another source of
defensive secretions. The
prothoracic glands’
reservoirs are not
covered with...
