How do red cells obtain glucose during starvation conditions?

Answer 1

to obtain glucose, your body uses the food that you eat, breaks it down into sugars, carbons and waste, and then uses the sugar and carbons. you can guess where the waste ends up. anyway, if you stop eating, your body will finish digesting the last meal you ate. after that has been used up, your liver stores an approx 24 hours of glucose. when that has been used up, your body has 2 types of fat. brown fat, the fat that you have to keep you warm, and white fat, the extra energy-rich fat. your body will break down the white fat first, producing energy and something called keytones. in large quantities, keytones are deadly, but they come out of your system through urine. anyway, when the white fat has been used up, the brown fat is broken up. then the body begins to break down your muscles and begins to take nutrients from your bones. soon, you cant lift yourself up because you lack the muscles, your bones are more breakable than glass, and your body begins to dissolve your organs. not long later, you die.

in someone who is diabetic, the body cannot digest the sugars that you have, so their goes the first two steps in the starvation ladder. you end up dying more quickly. all of the sugar builds up and is eventually pours out into your urine.

one last note, if you starve yourself, your keytones wont all be able to come out in your urine. so you will get a buildup of keytones, wich, depending on if you are overweight, would end up killing you before starvation does. this depends on how overweight you are.

Answer 2

1

Answer 3

During starvation your liver releases glucose from stored sites, like glycogen and also does a process called gluconeogenesis where it creates sugars in this case glucose from other substrates like amino acids from protein degradation or fatty acids... During starvation this glucose is used to supply all the tissues that exclusively use glucose like red blood cells and the brain... Both of this tissues use a transport system that is insulin independent so the can still acquire it during starvation periods

Answer 4

your liver metabolizes your body fat, as well as in some instances, the protein on your muscle to provide nutrition
the fat ant proteins are converted to glucose to feed your body

hence you see people who are starving--like those in somalia, etc--are very skinny--and have no body fat nor muscle
they are literally skin and bone--because their body has processed the extra fat and muscles on their bodies