B8 L4 Flashcards

(38 cards)

1
Q

Pacreas Endocrine Function

A

releases hormones involved in blood sugar homeostasis

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2
Q

Pancreas Exocrine Function

A

release digestive juices into SI

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3
Q

B cells

A

release insulin

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4
Q

a cells

A

release glucagon

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5
Q

Delta cells

A

release somatostatin

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6
Q

F cells

A

release pancreatic polypeptide

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7
Q

Epsilon cells

A

release Ghrelin

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8
Q

Insulin Structure

A

A, B, C chain

C removed during production and secreted w/ insulin

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9
Q

Degrades Insulin

A

Liver

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10
Q

Presence of C Chain

A

T2D

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11
Q

No C Chain

A

T1D

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12
Q

Insulin secreted when….

A

blood glucose is high

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13
Q

GLUT 4

A

insulin dependent glucose transporter in muscle and fat

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14
Q

GLUT 2

A

transports glucose into B cells

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15
Q

Insulin Functions

A

cause storage of excess energy
decreases blood glucose, fat levels, aa levels, K+ levels
feel less hungry

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16
Q

Insulin action for decreasing blood glucose levels

A

causes GLUT 4 to insert to cell membrane

reduce gluconeogenesis

17
Q

Insulin action for decreasing blood fat levels

A

inhibits lipolysis

reduces ketoacid production

18
Q

Insulin action for decreasing blood amino acid levels

A

increases protein synthesis

19
Q

Insulin action for decreasing K+ blood levels

A

K taken up into cells by increasing Na K ATPase activity

20
Q

T1D

A
destruction of B cells- no insulin made
increases blood glucose, lipid, protein
muscle wasting
ketoacidosis
diuresis, acidosis, hyperkalemia
21
Q

Treatment for T1D

A

insulin therapy FOREVER

22
Q

T2D

A

loss of insulin sensitivity from high lvls of blood glucose

retinal problems

23
Q

Treatment for T2D

A

excercise, diet

Metformin- increase insulin receptors

24
Q

Glucagon Function

A

release of stored energy

increase blood glucose, gluconeogenesis, glycogenolysis, lipolysis

25
Stim Glucagon release
low blood glucose high protein intake fasting or exercise
26
Hyperglucagonemia
high blood glucose weight loss can cause T2D necrolytic migratory erythema
27
Somatostatin
inhibit growth hormone and secretion of insulin and glucagon | stim by food- modulates response
28
Pancreatic Polypeptide
regulate all pancreas functions increased after protein meal, fasting, exercise decreased by somatostatin
29
Ghrelin
released when hungry | inhibits secretion of insulin
30
PTH and Vit D
increase blood calcium levels
31
Calcitonin
reduce blood calcium levels
32
PTH Actions
increase phosphate excretion and Ca reabsorption in kidney dissolves bone activates Vit D
33
Primary Hyperparathyroidism
too much PTH | hypercalcemia, weak bones, hypophosphatemia
34
Secondary Hyperparathroidism
from renal failure Vit D can't be activated in kidney hypocalcemia, weak bones
35
Hypoparathyroidism
from thyroid removal hypocalcemia hyperphosphatemia
36
Calcitonin
released by C cells of thyroid inhibits bone breakdown increases phosphate excretion and reduces Ca reabsorption
37
Vitamin D
needed for calcium reabsorption from diet need UV light and kidneys to make PTH increases its production
38
Rickets
lack of Vit D | weak bones