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% F cells, 15% delta cells, 5% beta cells, <1% alpha cells
C. 80% alpha cells, 15% beta cells, 5% delta cells, <1% F cells
D. 80% delta cells, 15% F cells, 5% beta cells, <1% alpha cells
E. 80% delta cells, 15% alpha cells, 5% F cells, <1% beta cells


Answer: A

Anatomy & Physiology

You might also like to view...

___________________ is a role played by a muscle to stabilize a body part against some other force. ________________________________________

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Local control mechanisms can override sympathetic control of changes in the size of arterioles

Indicate whether the statement is true or false

Anatomy & Physiology

The pigmented skin that surrounds the nipple is the

A) zona reticularis. B) fornix. C) zona pellucida. D) peripapilla. E) areola.

Anatomy & Physiology

What is the role of vitamin A in bone deposition?

A. It provides the raw material for calcification of the ground substance. B. It promotes the cross-linking of collagen molecules. C. It is necessary for calcium absorption by the small intestine. D. It promotes the synthesis of bone matrix glycosaminoglycans (GAGs). E. It stimulates osteoblast activity.

Anatomy & Physiology