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Ch. 9 The Endocrine System
Marieb - Essentials of Human Anatomy & Physiology 13th Edition
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMarieb 13th EditionCh. 9 The Endocrine SystemProblema 10
Capitolo 9, Problema 10

More than one choice may apply.
Hormones that act to decrease the blood glucose level include
a. Insulin
b. Glucagon
c. Epinephrine
d. Growth hormone

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Understand the role of blood glucose regulation: Blood glucose levels are tightly regulated by hormones to maintain homeostasis. Some hormones decrease blood glucose levels, while others increase it.
Analyze the function of insulin: Insulin is a hormone secreted by the pancreas (beta cells of the islets of Langerhans). It lowers blood glucose levels by promoting glucose uptake into cells and stimulating glycogen synthesis in the liver and muscles.
Evaluate the role of glucagon: Glucagon, secreted by the pancreas (alpha cells of the islets of Langerhans), increases blood glucose levels by stimulating glycogen breakdown (glycogenolysis) and glucose production (gluconeogenesis) in the liver.
Consider the effects of epinephrine: Epinephrine, also known as adrenaline, is secreted by the adrenal medulla. It increases blood glucose levels by promoting glycogenolysis and inhibiting insulin secretion during the fight-or-flight response.
Examine the role of growth hormone: Growth hormone, secreted by the anterior pituitary gland, indirectly increases blood glucose levels by reducing glucose uptake in tissues and promoting lipolysis (fat breakdown) for energy use.

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Insulin

Insulin is a hormone produced by the pancreas that plays a crucial role in regulating blood glucose levels. It facilitates the uptake of glucose by cells, particularly in muscle and fat tissues, thereby lowering blood sugar levels. Insulin is essential for maintaining energy balance and preventing hyperglycemia.
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Hormone Review Table Example 1

Glucagon

Glucagon is another hormone produced by the pancreas, but it has the opposite effect of insulin. It stimulates the liver to release stored glucose into the bloodstream, raising blood sugar levels. While glucagon primarily acts to increase glucose levels, it is important to understand its role in the overall regulation of blood glucose homeostasis.
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4:31
Hormone Review Table Example 1

Hormonal Regulation of Blood Glucose

The hormonal regulation of blood glucose involves a complex interplay between various hormones, including insulin and glucagon. This balance is crucial for maintaining normal blood sugar levels. Other hormones like epinephrine and growth hormone can also influence glucose metabolism, but their primary roles are not to decrease blood glucose, making the understanding of insulin's function particularly important.
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Review of Major Hormones
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More than one choice may apply.

Hormones that regulate mineral (salt) levels include

a. Calcitonin

b. Aldosterone

c. Atrial natriuretic peptide

d. Glucagon

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More than one choice may apply. The element needed for thyroid gland function is

a. Potassium

b. Iodine

c. Calcium

d. Manganese

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More than one choice may apply. In the hormone-signaling pathway represented in the figure,_________ is the first messenger, and _______is the second messenger that will signal a change in cell activity.

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More than one choice may apply.

Which of the following is given as a drug to reduce inflammation?

a. Epinephrine

b. Cortisol

c. Aldosterone

d. ADH

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More than one choice may apply.

Which events occur shortly after eating?

a. Use of amino acids as a major source of energy

b. Lipogenesis (and fat deposit)

c. Breakdown of fat reserves

d. Increased uptake of glucose by skeletal muscles and other body tissues

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Explain what mechanism of hormone action is occurring in this image. How does it work? Give an example of a hormone that uses this mechanism.

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