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18 Questions

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Classification of Hormones Quiz

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Questions and Answers

What does the term 'hormone' mean, based on its Greek origin?

To protect or defend

To energize or stimulate

To excite or arouse (correct)

To calm or relax

How do hormones communicate their effects to target cells?

By direct contact with target cells

By interacting with neighboring cells

By general diffusion in the bloodstream

By specific receptors on target cells (correct)

Which hormone is essential in both development and aspects of homeostasis and metabolism?

Cortisol

Thyroid hormone (correct)

Insulin

Glucagon

In controlling blood glucose, which hormones are involved along with insulin?

Glucagon, growth hormone, epinephrine Signup and view all the answers

Which of the following is NOT a category of functions performed by hormones?

Digestion and absorption Signup and view all the answers

What aspect of hormones allows them to affect multiple functions within the body?

Their specific chemical structures recognized by receptors Signup and view all the answers

What is the key difference between exocrine and endocrine glands?

Endocrine glands secrete substances via a ductal system to an epithelial surface. Signup and view all the answers

What defines a paracrine mechanism of chemical signaling?

Chemical communication between neighboring cells within a tissue. Signup and view all the answers

What is the first step in hormone action?

Binding of hormones to specific receptors on target cells. Signup and view all the answers

Which type of signaling involves a chemical acting on the same cell that released it?

Autocrine signaling Signup and view all the answers

What are hormone receptors?

Large proteins with specificity for a single hormone. Signup and view all the answers

Which class of hormones is typically synthesized from cholesterol?

Steroids Signup and view all the answers

What defines classical endocrine and neuroendocrine signaling mechanisms?

Release of hormones directly into the bloodstream to act on distant target tissues. Signup and view all the answers

What is the largest group of hormones based on chemical type?

Polypeptide hormones Signup and view all the answers

Where are the receptors located for lipophilic (Hydrophobic) hormones of Group I?

In the cytosol or nucleus Signup and view all the answers

Which of the following is NOT a class of hormones based on chemical nature?

Group I hormones Signup and view all the answers

Which hormone can pass through the lipophilic plasma membrane to interact with intracellular receptors?

Thyroxine Signup and view all the answers

Which group of hormones is characterized by being large protein molecules with carbohydrate side chains?

Glycoprotein hormones Signup and view all the answers