serves as the animals’ first line of defense (also for offense)
integument
integument could be:
integument of protozoans
thick protein coat
pellicle
integument of porifera
flat T cells on the skin of sponges
pinacocytes
pinacocytes are lined with ______
choanocytes
integument of cnidaria
stinging cells with nematocysts
cnidocytes
trigger motor responses
nerve cells
unspecialized cells that are not active by default, but serve as replacements for dead cells
interstitial cells
integument of platyhelminthes
integument of nematoda
epidermis . hypoderms of nematoda
muscle layer of nematoda
longitudinal muscles
integument of annelida
cuticle of annelida
not molted
epidermis of annelida
setae / chaetae
muscle layers of annelida
integument of of arthropoda
the exoskeleton / cuticle of arthropoda are composed of
protein and chitin
integument of mollusca
gland cells secretes ______
mucus
integument of echinodermata