BIO 122 - camels

humans cannot tolerate water loss of more than 10% body weight. for camels:

tolerate dehydration of 30-40 % of body weight

without water, a human in the desert will die in about 72 hours. for camels its:

2-3 weeks

how much water can a dehydrated camel drink in 5 minutes?

20 gal

camels are the only mammals with nucleated erythroctytes. cells can tolerate swelling to ______ of normal volumes

240%

humans can make urine that is 3 times as concentrated as their blood. for camels, the urine/plasma ration is:

8 ; more concentrated urine = less water lost

camel RBCs are _____ - this allows them to move through the blood vessels even when the blood is as thick as pancake syrup

ovel

when a camel drinks a lot of water, what will happen to the blood cells as the plasma is diluted?

swell

why do shaved camels drink more water?

because fur insulates and prevents them from gaining too much heat

who is the "ship of the desert"

camel

Knut Schmidt-Nielsen tested the value of fur in camels by comparing the drinking rate of shaved and unshaved animas. he found that the shaved animals:

drank more water

a camel is a _____

endotherm