Exam 50: Regulating the Internal Environment

In a typical adult human about 180 L of fluid leaves the blood as filtrate each day. How much is reabsorbed?

What is the main form of nitrogenous waste released by birds to their environment?

Compared to uric acid, how much energy and water are required if urea is the main form of nitrogenous waste?

In mammals, which excretory tubule segment allows water to exit but does NOT allow ions or urea to exit?

Where does the kangaroo rat get the bulk of its water from?

Where are Malpighian tubules found?

In mammals, where is the glomerulus located?

Which term refers to the nonselective movement of water and a number of solutes into the excretory system tubules?

How is osmolarity measured?

What is the name of the tube through which urine leaves the urinary bladder?

What is the osmolarity of fresh water?

What is the main form of nitrogenous waste released by mammals to their environment?

Which term refers to the movement of some molecules and ions out of the excretory system tubules and back into body fluids?

Which organisms obtain heat primarily from internal physiological sources?

Which of the following organisms is an endotherm?

Match each description to a nephron tubule portion. Nephron tubule portions can be used more than once. -tubule segment that usually has the largest increase in osmolarity

Match each description to a nephron tubule portion. Nephron tubule portions can be used more than once. -surrounds the glomerulus

Suppose that you examine an animal and find it has excretory structures that have a closed proximal end immersed in hemolymph and a distal end that empties into the gut. Which term should you use to describe these structures?

Suppose sugar is taken out of an excretory system tubule and put back into the blood. What would this process be an example of?

Match each description to a nephron tubule portion. Nephron tubule portions can be used more than once. -tubule segment that usually has the largest decrease in osmolarity