PCOL 838 Midterm Exam 2025 Graded A+ Questions with 100% Correct Answers

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PCOL 838 Midterm Exam 2025 Graded A+ Questions with 100% Correct Answers

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PCOL 838 Midterm Exam 2025 Graded
A+ Questions with 100% Correct
Answers
what are the four major islet cell types and their functions? - - beta cells = secrete insulin (60%)

- alpha cells = secrete glucagon (30%)

- delta cells = secrete somatostatin (10%)

- pancreatic polypeptide secreting cell (1%)

what is the effect of alpha cells (glucagon) on other islet cells? - it stimulates beta cells (insulin) and
delta cells (somatostatin)

what is the effect of delta cells (somatostatin) on other islet cells? - it inhibits beta cells (insulin) and
alpha cells (glucagon)

what is the effect of beta cells (insulin) on other islet cells? - it inhibits alpha cells (glucagon)

what do beta cells secrete?

a. insulin

b. glucagon

c. somatostatin - a. insulin

what do alpha cells secrete?

a. insulin

, b. glucagon

c. somatostatin - b. glucagon

what do delta cells secrete?

a. insulin

b. glucagon

c. somatostatin - c. somatostatin

what does the presence of C peptide mean? - it means insulin is being made

what is the effect of insulin responsive cells (IRCs) on the body? - - liver and muscle = decrease
gluconeogenesis and glycogenolysis

- adipocytes = increased lipogenesis and adipogenesis

how is glucose transported into the cell? - GLUT4 transporter fuses with the membrane and causes
glucose uptake

what is the end result of PI3K signaling?

a. necrosis

b. phagocytosis

c. apoptosis

d. entosis - c. apoptosis

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Uploaded on: February 6, 2025
Number of pages: 11
Written in: 2024/2025
Type: Exam (elaborations)
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