Multiple Choice
Which of the following is often referred to as the 'master gland' of the endocrine system?
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16. The Endocrine System
Introduction to the Endocrine System
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Which of the following organs has both endocrine and exocrine functions?
A
Adrenal gland
B
Pancreas
C
Pituitary gland
D
Thyroid gland
Verified step by step guidance1
Understand the difference between endocrine and exocrine functions: Endocrine glands release hormones directly into the bloodstream, while exocrine glands release substances through ducts to the outside of the body or onto a surface within the body.
Identify the function of each organ listed: The adrenal gland, pituitary gland, and thyroid gland are primarily endocrine glands, meaning they release hormones directly into the bloodstream.
Consider the pancreas: The pancreas has both endocrine and exocrine functions. Its endocrine function involves releasing insulin and glucagon into the bloodstream to regulate blood sugar levels. Its exocrine function involves producing digestive enzymes that are released into the small intestine through ducts.
Compare the functions: Since the pancreas has both endocrine and exocrine functions, it is unique among the options provided.
Conclude that the pancreas is the organ with both endocrine and exocrine functions, distinguishing it from the other glands listed.
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