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Exam 9: The Endocrine System

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Question 1

Multiple Choice

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Most hormones are ________.

A) regulated by a positive feedback mechanism
B) classified as steroids
C) released upon stimulation by other hormones
D) controlled by blood levels of ions or nutrients
E) able to diffuse through the plasma membrane of their target cells

F) A) and B)
G) B) and E)

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Question 2

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The hyposecretion of luteinizing hormone (LH) or follicle-stimulating hormone (FSH) results in sterility.

A) True
B) False

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Question 3

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Most hormones are regulated by negative feedback mechanisms.

Match the following actions with the appropriate hormone: -Raises blood calcium levels

Aldosterone release is prevented by atrial natriuretic peptide (ANP), a hormone released by the heart.

The scientific study of hormones and endocrine organs is known as immunology.

Beta cells of the pancreatic islets produce a hormone known as ________ while the alpha cells produce a hormone known as ________.

The target of prolactin is the female breast.

Using Figure 9.1, identify the following: -The gland that produces testosterone is indicated by ________.

Using Figure 9.1, identify the following: -The glands that produce a hormone that is the most important regulator of calcium ion homeostasis of the blood are indicated by ________.

Calcitonin is a hypocalcemic hormone while parathyroid hormone (PTH) is a hypercalcemic hormone.

In the second-messenger system, what serves as the first messenger?

Alcohol inhibits the secretion of ________.

The thymus gland is located in the neck on the posterior surface of the trachea.

Antidiuretic hormone promotes both sodium and water retention.

Explain the effects of the catecholamines on the body during the fight-or-flight response and how these effects help us deal with short-term stress.

Six-year-old Timothy is small for his age, has dry skin, and scanty hair. He also shows signs of intellectual impairment. What disorder do you suspect?

Hormones that are secreted in response to other hormones are prodded by hormonal stimuli.

Bronze skin color, hypoglycemia, and a reduced ability to cope with stress (burnout) are signs and symptoms of ________.

Daniella has been diagnosed with Addison's disease. Which of the following is probably NOT one of her signs or symptoms?