Ch 44

Question 1

Osmoconformers are animals that

Answer 1

Have an internal environment that is osmotically similar to their external environment, which does not require energy expenditure

Question 2

The primary nitrogen containing compound excreted by our kidneys is

Answer 2

Urea

Question 3

Which one of the following is not a function of the excretory system

Answer 3

Elimination of undigested foods

Question 4

Which of the following is filtered from the blood but not normally found in urine

Answer 4

Amino acids

Question 5

The bed of capillaries in a vertebrate kidney where water urea and salts are filtered out of the blood is the

Answer 5

Glomerulus

Question 6

Which is an accurate statement about the anatomy of the human kidney

Answer 6

The loop of henle is located between the proximal tubule and the distal tubule

Question 7

Which is not an accurate pairing of an excretory function with its definition

Answer 7

Reabsorption is the process where toxins drugs and excessive ions that remain in the blood after filtration are transported into the nephron for the disposal in the urine

Question 8

What is the function of the ascending limb of the loop of henle

Answer 8

It helps maintain the concentration gradient of nacl in the interstitial fluid, thus increasing water reabsorption

Question 9

Which of the following is an incorrect pairing of organism and excretory structure

Answer 9

Malpighian tubules

Annelids

Question 10

The cells of freshwater fish are ____ to the environment, and thus the fish ____ the environment

Answer 10

Hypertonic

Gains water from

Question 11

For a bony fish to maintain osmotic balance in seawater, it must ___ water from the environment and ____ sodium and chloride ions across the gills

Answer 11

Drink

Actively secrete

Question 12

The ability of some animals such as “water bears” to survive in an extremely dehydrated, dormant state is called

Answer 12

Anhydrobiosis

Question 13

He most toxic nitrogenous waste is

Answer 13

Ammonia

Question 14

Excretion of ____ requires the least amount of water loss from the animal

Answer 14

Utica acid

Question 15

The ____ collects urine for drainage from the kidney and the _____ carries urine from the kidney to the urinary bladder

Answer 15

Renal pelvis

Ureter

Question 16

To conserve water desert rodents have relatively _____ loops of henle which allow these animals to produce a very _____ urine

Answer 16

Long

Concentrated

Question 17

The nephrons of fish, amphibians and reptiles do not have the ____ which is present in the nephron of mammals

Answer 17

Loop of henle

Question 18

If an animal became dehydrated, then the level of ADH would ____ so that water reabsorption would ____ and make the urine more concentrated

Answer 18

Increase

Increase

Question 19

In the ____ of he nephron , bicarbonate reabsorption and H+ secretion occur to maintain blood ph

Answer 19

Proximal and distal tubules

Question 20

Arrange the parts in order as fluid flows though the nephron 
1 loop of henle
2 collecting duct
3 bowmans capsule 
4 distal tubule 
5 proximal tubule

Answer 20

3 5 1 4 2

Question 21

Active reabsorption of glucose and amino acids occurs primarily in the ___

Answer 21

Proximal tubule

Question 22

Secretion of drugs toxins and poisons from the blood occurs primarily in the ____

Answer 22

Proximal and distal tubules

Question 23

The active transport of substances from the blood in capillaries around the proximal tubule into fluid inside the tubule is ____

Answer 23

Secretion

Question 24

The primary nitrogenous waste excreted is _____ for fish and _____ for lizards and birds

Answer 24

Ammonia

Uric acid

Question 25

Nitrogenous wastes are produced as a byproduct of the metabolism of ____

Answer 25

Proteins