(d) The digestive glands have also been shown to be excretory (5, p. 270).
It favors the excretory action of the skin, thus purifying it.
One of the prominent openings admits the food and the water required in respiration, the other is the excretory aperture.
The excretory organs of the Vertebrata consist of three distinct glandular bodies and of their ducts.
The development ...