Exam 44: Osmoregulation and Excretion

Use the following information to answer the next few questions. While spelunking,you have discovered a new species deep inside the cave.This animal does not have easy access to water.It has a dense coat of fur,a four-chambered heart,and a closed circulatory system. -Which excretory system modification do you expect to find?

Use the following information to answer the next few questions. After a long week,you join a few friends at a local pub to enjoy a meal and have a few beers.After a few hours and several beers,you find yourself to be quite thirsty. -Which process in the nephron is least selective?

In animals,nitrogenous wastes are produced mostly from the catabolism of

In humans,the transport epithelial cells in the ascending loop of Henle

Hagfish (Eptatretus cirrhauts)are a jawless marine vertebrate that are isotonic with their environment and are considered to be osmoconformers.How might this interesting adaptation limit the habitat that the hagfish can tolerate?

If you are hiking through the desert for several days,one would pack which of the following to ensure proper hydration?

Why are the renal artery and vein critical to the process of osmoregulation in vertebrates?

After blood flow is artificially reduced at one kidney,you would expect that kidney to secrete more of the hormone known as

The transfer of fluid from the glomerulus to Bowman's capsule

The figure above shows a nephron.Filtration takes place in the structure labeled ________.

Use the following structural formulas to identify the following items. -Which of the following is excreted readily by aquatic animals because of its high solubility in the respiratory medium?

Which of the following animals is most likely to excrete ammonia?

Which of the following pairs of organisms excrete nitrogenous wastes in the form of uric acid?

The porbeagle shark (Lamana nasus),found on the continental shelf between Newfoundland and Labrador and Gulf of Maine,excretes ________ which is produced in the ________.

Compared to wetland mammals,water conservation in mammals of arid regions is enhanced by having more

The osmoregulatory/excretory system of an earthworm is based on the operation of

Natural selection should favour the highest proportion of juxtamedullary nephrons in which of the following species?

The high osmolarity of the renal medulla is maintained by all of the following except

If the concentration of glucose in the blood flowing through the kidneys is within normal range,which of the following statements is correct?

If ATP production in a human kidney were suddenly halted,urine production would