The 4 Types of Secretory Cells in the Pancreatic Islets

question 9

Multiple Choice

The 4 types of secretory cells in the pancreatic islets are not present in the equal percentages.  Which of the following represents the correct approximate percentages for the 4 types of islet cells?

• A)80% beta cells, 15% alpha cells, 5% delta cells, <1% F cells
• B)80% delta cells, 15% alpha cells, 5% F cells, <1% beta cells
• C)80% delta cells, 15% F cells, 5% beta cells, <1% alpha cells
• D)80% alpha cells, 15% beta cells, 5% delta cells, <1% F cells
• E)80% F cells, 15% delta cells, 5% beta cells, <1% alpha cells

---

Definitions:

Average Rate of Return

A method of determining the profitability of an investment by dividing the average annual profit by the initial investment cost.

Total Income

The sum of all revenues and gains that a person or business receives over a period of time, before any expenses are subtracted.

Average Rate of Return

A metric that determines the earnings from an investment by dividing the mean yearly profit by the cost of the initial investment.

Straight-Line Depreciation

A method of allocating the cost of a tangible asset over its useful life in equal annual amounts.