Necturus Lab Flashcards
to what superclass does necturus belong
tetrapoda
to what order does necturus belong
urodela
what is the species name for necturus
maculosus
what is the optimal temperature for necterus
18 C
where is necturus found most commonly
in streams having a stony bed
necterus has neoteny, what does this mean
does not undergo metamorphosis, retains larval characteristics in adult
what is necterus integument made of
epidermis and dermis (no scales)
what is the epidermis made of
stratum basalis
what is stratum basalis
layer of low columnar cells with several layers of increasing numbers of polyhedral cells and flattened cells near surface
what is characteristic of the epidermis
numerous flask shaped cells that seem to be glandular in nature (responsible for slime production)
what are chromatophores
pigment cells (usually green)
what is the dermis composed of
outer looser stratum spongiosium and inner compact stratum compactium
where are the poison glands
dorsal surface of body
how many external gills are there
3 on each side of body
what do gill slits communicate with
pharynx