Textbook Question
A reticulocyte count indicated that 5% of Tyler's red blood cells were reticulocytes. His blood test also indicated he had polycythemia and a hematocrit of 65%. Explain the connection between these three facts.
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16. The Endocrine System
Introduction to the Endocrine System
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In the endocrine system, which hormone primarily increases blood glucose levels?
A
Insulin
B
Glucagon
C
Antidiuretic hormone (ADH)
D
Calcitonin
Verified step by step guidance1
Step 1: Understand the role of hormones in blood glucose regulation. Blood glucose levels are tightly controlled by hormones to maintain homeostasis.
Step 2: Identify the hormone that lowers blood glucose levels. Insulin is known to decrease blood glucose by promoting cellular uptake of glucose.
Step 3: Identify the hormone that increases blood glucose levels. Glucagon acts to raise blood glucose by stimulating glycogen breakdown and glucose release from the liver.
Step 4: Recognize that Antidiuretic hormone (ADH) primarily regulates water balance and does not directly affect blood glucose levels.
Step 5: Understand that Calcitonin is involved in calcium homeostasis and does not influence blood glucose levels.
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