Absorptive and Post Absorptive States Flashcards

1
Q

what are the first four hours after a meal regulated by

A

insulin

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2
Q

what are the hours after four hours after a meal to the next meal regulated by

A

glucagon

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3
Q

aka absorptive state

A

fed state

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4
Q

what is the absorptive state regulated by

A

insulin

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5
Q

aka post absorptive state

A

fasted state

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6
Q

what is the post absorptive state regulated by

A

gulcagon

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7
Q

what are insulin and glucagon and where are they made

A

complimentary hormones and made in pancreas

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8
Q

what occurs in the fasted state

A

no new things in blood

tapping into stored food and using for energy

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9
Q

what secretes enzymes into the small intestine and hormones into the blood

A

pancreas

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10
Q
what secretes, not in blood
goes into GI tract
digestive enzymes
acinar cells
stimulated by CCK
A

exocrine

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11
Q

what is hormones

islets of langerhans

A

endocrine

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12
Q

what do the islets of langerhans make

A

insulin and glucagon

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13
Q

what type of islets make glucagon

A

alpha(red)

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14
Q

what type of islets make insulin

A

beta(purple)

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15
Q

what is the function of islets of langerhans

A

constantly measuring sugar levels

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16
Q

what is initiated if there are low sugar levels

A

make glucagon(post absorptive)

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17
Q

what is initiated if there are high sugar levels

A

make insulin(absorptive)

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18
Q

what is the absorptive state regulated by and when does it change

A

insulin(amino acid based)

changes in about ten minutes(can last hours)

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19
Q

what is the first step in the absorptive state

A

blood glucose levels go up(primary stimulus)

this causes facilitated diffusion of glucose into tissue cells

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20
Q

what is the second step in the absorptive state

A
cellular respiration(make ATP)
make storage products(glycogen)
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21
Q

what is the third step in the absorptive state

A

protein synthesis

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22
Q

what does the changing of glucose in the tissues allow

A

it allows the concentration gradient to be retained so glucose can keep being brought into the cells

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23
Q

the absorptive state occurs when

A

sugar is plentiful

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24
Q

absorptive state = ______

25
what is the storage of cellular glycogen called
glycogenosis
26
what is the release of blood glucose
glycogenolysis
27
what is the diffusion gradient contained by
glucose changing to G-6-P
28
what is the glucose polymer
glycogen
29
where is glycogen stored
muscle and liver
30
the muscle and liver are
the primary storehouse of carbohydrates
31
what makes people more prone to type 2 diabetes
fatty liver (epidemic in US due to obesity)
32
what is the post absorptive state regulated by and what does it do
glucagon and it does the opposite of insulin
33
what does insulin do
lowers blood sugar because it is taking glucose out of blood and into cells
34
what does low blood sugar promote
glucagon release
35
what does the post absorptive use to make blood glucose
stored fuel
36
what is the first thing glucagon stimulates
fat breakdown- fat released into blood and pumped into body and tissues that need fat
37
what is glucose sparing
cells using lipids as primary energy instead of sugar for energy
38
what is an example of glucose sparing
heart can run on either lipids or sugars
39
what do cells prefer to run on
sugar
40
why is glucose sparing a thing
to leave as much glucose in the blood as possible(keep glucose level stable)
41
what does the liver do in the post absorptive state
glycogenolysis
42
what is glycogenolysis
breaking and splitting individual glucose off chains to release into blood
43
another way to describe what the liver does
breaks things from carbohydrate glycogen to simple carbohydrate glucose
44
when does the post absorptive state occur
when sugar is scarce
45
what is the purpose of the post absorptive state
make glucose
46
what is the making of glucose from either amino acids or lipids (glyceral)
gluconeogenesis
47
how does gluconeogenesis occur
tap into fat stores and create glucose to keep glucose levels stable/high
48
what can only run on glucose
nerve cells
49
why can nerve cells only run on glucose
they burn a lot of it(high metabolic rate)
50
what happens when there is not sufficient glucose and why
pass out because brain does not have enough glucose
51
what do muscles and and liver do
muscle breaks down glycogen so then liver can make glucose
52
what is used to detect if someone is diabetic
glucose tolerance test
53
how does the glucose tolerance test
it monitors sugar levels in the blood | patient comes in fasted, consumes syrup
54
what is a fasted blood glucose usually at
60-100 g/100 ml
55
what should happen after a patient consumes the syrup
blood sugar levels become high
56
at what time should the blood glucose be back <100
120 min
57
what can raise blood sugar levels and why
epinephrine due to stress
58
how can you tell if someone is diabetic when they get a glucose tolerance test
at 120 minutes the blood glucose levels are still elevated(remains high for a very long time) varying degree of how high in fed state blood glucose not lowered after 120 min
59
what does the glucagon response cause very rapidly
a minor dip in blood glucose levels