NU551 Unit 4 Exam | Questions with 100% Correct
Answers | Verified | Latest Update 2026/2027
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Terms in this set (61)
What is the main purpose of the Maintain homeostasis through hormone signaling.
endocrine system?
How does the endocrine system Both systems work together to regulate
interact with the nervous system? homeostasis.
What do hormones do in the body? Act as chemical messengers that regulate growth,
metabolism, reproduction, and stress response.
What are the structural types of Single amino acids, proteins, carbohydrates, or
hormones? lipids.
What are the major endocrine Pituitary, pineal, thymus, thyroid, adrenals,
glands? pancreas.
What is a target cell? A cell with specific receptors for a hormone.
What happens if a cell does not have It cannot be directly influenced by that hormone.
receptors for a hormone?
What is the difference between Intracrine stays inside the cell and binds internal
intracrine and autocrine signaling? receptors; autocrine exits the cell and binds to its
own surface receptors.
, What is a key rule about hormones A single hormone can affect multiple
and their effects? organs/processes and may act far from where it is
produced.
What is an example of neural control Autonomic stimulation of pancreatic insulin
of hormones? secretion.
What is the difference between Negative feedback reduces further hormone
negative and positive feedback? release; positive feedback amplifies it.
If thyroxine (T4) levels are high, what Low.
should TSH levels be?
What is an example of a water- Epinephrine.
soluble amine hormone?
What happens when insulin binds to Glucose uptake increases.
muscle cells?
How do lipid-soluble hormones By diffusion from high concentration to low
cross membranes? concentration.
What are steroid hormones made Cholesterol.
from?
How do steroid hormones travel in They are hydrophobic and bind to transport
the blood? proteins.
What are the five classes of steroid Glucocorticoids, mineralocorticoids, androgens,
hormones? estrogens, progesterones.
What are non-steroid hormones Amino acids; they bind to receptors on the cell
made of, and how do they act? membrane.
Answers | Verified | Latest Update 2026/2027
Save
Terms in this set (61)
What is the main purpose of the Maintain homeostasis through hormone signaling.
endocrine system?
How does the endocrine system Both systems work together to regulate
interact with the nervous system? homeostasis.
What do hormones do in the body? Act as chemical messengers that regulate growth,
metabolism, reproduction, and stress response.
What are the structural types of Single amino acids, proteins, carbohydrates, or
hormones? lipids.
What are the major endocrine Pituitary, pineal, thymus, thyroid, adrenals,
glands? pancreas.
What is a target cell? A cell with specific receptors for a hormone.
What happens if a cell does not have It cannot be directly influenced by that hormone.
receptors for a hormone?
What is the difference between Intracrine stays inside the cell and binds internal
intracrine and autocrine signaling? receptors; autocrine exits the cell and binds to its
own surface receptors.
, What is a key rule about hormones A single hormone can affect multiple
and their effects? organs/processes and may act far from where it is
produced.
What is an example of neural control Autonomic stimulation of pancreatic insulin
of hormones? secretion.
What is the difference between Negative feedback reduces further hormone
negative and positive feedback? release; positive feedback amplifies it.
If thyroxine (T4) levels are high, what Low.
should TSH levels be?
What is an example of a water- Epinephrine.
soluble amine hormone?
What happens when insulin binds to Glucose uptake increases.
muscle cells?
How do lipid-soluble hormones By diffusion from high concentration to low
cross membranes? concentration.
What are steroid hormones made Cholesterol.
from?
How do steroid hormones travel in They are hydrophobic and bind to transport
the blood? proteins.
What are the five classes of steroid Glucocorticoids, mineralocorticoids, androgens,
hormones? estrogens, progesterones.
What are non-steroid hormones Amino acids; they bind to receptors on the cell
made of, and how do they act? membrane.
