Compound eye with 22 ommatidia and black pigment. Used for basic vision and orientation
Relatively simple, median eye, typically consisting of 3 photoreceptor units (up to 7 in taxa where it persists in the adult) and first appearing in the nauplius larval stage.
Not much more than cerebral ganglion
Organ found in Daphnia that may have a role in excretion and/or osmoregulation.
Pump of an open blood system
The "arms" are actually antennae used for swimming. These muscles give the major movement.
The 5 thoracic appendices, otherwise known as phyllopods, with the filter sellae form the filter apparatus for filtration and gas exchange.
Or furca,is a paired claw for cleaning of the filter apparatus and probably defence.
Here poop comes out
These are used to close the brood chamber.
Here eggs and embryos develop.
Or diverticulum. These are paired appendices that produce digestive fluids.
The midgut is lined with an epithelium bearing microvilli.