What Type of Excretory Systems Do Animals Use?
1. Indicate the three steps that are common to the function of most excretory systems
and the significance of each.
2. Compare the excretory system of the flatworms and annelids (earthworm); what other
animals have a system like that of the earthworm?
3. Explain how the excretory system of insects differs from that of other invertebrate
animals.
4. Regarding the mammalian nephron:
Be able to draw a nephron and label its 4 main parts.
Explain how and where filtration occurs; what substances are initially removed from
the blood?
Trace the movement of filtrate through the tubule of the nephron and indicate the
changes that occur in each part of the nephron; where does the most reabsorption
occur?
Indicate the main components of urine when it is excreted.
5. Indicate the function of collecting ducts; how do they alter the volume of urine
excreted?