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NU551 Unit 4 Questions and Correct
Answers/ Latest Update / Already Graded
What is the main purpose of the endocrine system?
Ans: Maintain homeostasis through hormone signaling.
How does the endocrine system interact with the nervous system?
Ans: Both systems work together to regulate homeostasis.
What do hormones do in the body?
Ans: Act as chemical messengers that regulate growth,
metabolism, reproduction, and stress response.
What are the structural types of hormones?
Ans: Single amino acids, proteins, carbohydrates, or lipids.
What are the major endocrine glands?
Ans: Pituitary, pineal, thymus, thyroid, adrenals, pancreas.
What is a target cell?
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Ans: A cell with specific receptors for a hormone.
What happens if a cell does not have receptors for a hormone?
Ans: It cannot be directly influenced by that hormone.
What is the difference between intracrine and autocrine signaling?
Ans: Intracrine stays inside the cell and binds internal
receptors; autocrine exits the cell and binds to its own surface
receptors.
What is a key rule about hormones and their effects?
Ans: A single hormone can affect multiple organs/processes
and may act far from where it is produced.
What is an example of neural control of hormones?
Ans: Autonomic stimulation of pancreatic insulin secretion.
What is the difference between negative and positive feedback?
Ans: Negative feedback reduces further hormone release;
positive feedback amplifies it.
All rights reserved © 2025/ 2026 |
NU551 Unit 4 Questions and Correct
Answers/ Latest Update / Already Graded
What is the main purpose of the endocrine system?
Ans: Maintain homeostasis through hormone signaling.
How does the endocrine system interact with the nervous system?
Ans: Both systems work together to regulate homeostasis.
What do hormones do in the body?
Ans: Act as chemical messengers that regulate growth,
metabolism, reproduction, and stress response.
What are the structural types of hormones?
Ans: Single amino acids, proteins, carbohydrates, or lipids.
What are the major endocrine glands?
Ans: Pituitary, pineal, thymus, thyroid, adrenals, pancreas.
What is a target cell?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: A cell with specific receptors for a hormone.
What happens if a cell does not have receptors for a hormone?
Ans: It cannot be directly influenced by that hormone.
What is the difference between intracrine and autocrine signaling?
Ans: Intracrine stays inside the cell and binds internal
receptors; autocrine exits the cell and binds to its own surface
receptors.
What is a key rule about hormones and their effects?
Ans: A single hormone can affect multiple organs/processes
and may act far from where it is produced.
What is an example of neural control of hormones?
Ans: Autonomic stimulation of pancreatic insulin secretion.
What is the difference between negative and positive feedback?
Ans: Negative feedback reduces further hormone release;
positive feedback amplifies it.
All rights reserved © 2025/ 2026 |
