1|Page
NR 305 – EXAM 1: 2025/2026 UPDATED
QUESTIONS AND VERIFIED ANSWERS
Of the fluid surrounding body cells compared to
that within the cells?
- ANSWERS ✔ ✔The composition of the fluid
surrounding body cells is the same as that
within the cells.
What is the general purpose of positive
feedback mechanisms?
- ANSWERS ✔ ✔To bring about a rapid change
in the body.
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What does the internal environment of the
body refer to?
- ANSWERS ✔ ✔The plasma, the interstitial
fluid, and the intracellular fluid combined.
True or False: One function of epithelial cells is
to form selective barriers regulating exchange
of materials across them
. - ANSWERS ✔ ✔True.
True or False: A person who is acclimated to a
hot environment will react physiologically to a
decreased environmental temperature faster
than someone who is not.
- ANSWERS ✔ ✔True.
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True or False: When loss of a substance from
the body exceeds the gain, the body is said to
be in positive balance for that substance.
- ANSWERS ✔ ✔False.
What process is blood clotting an example of?
- ANSWERS ✔ ✔Positive feedback.
What type of control involves neurons in the
vagus nerve affecting heart rate?
- ANSWERS ✔ ✔Neural control.
What is the term for the developmental process
that leads to specialized cell types?
- ANSWERS ✔ ✔Differentiation.
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What is the breastfeeding process an example
of?
- ANSWERS ✔ ✔Positive feedback.
How is autocrine regulation best described?
- ANSWERS ✔ ✔Chemical regulators affect the
same cells that produce them.
What is the defining feature of the discipline of
physiology?
- ANSWERS ✔ ✔Homeostasis.
What is the order of components in a general
reflex arc following a stimulus?
- ANSWERS ✔ ✔Receptor, afferent pathway,
integrating center, efferent pathway, effector.
NR 305 – EXAM 1: 2025/2026 UPDATED
QUESTIONS AND VERIFIED ANSWERS
Of the fluid surrounding body cells compared to
that within the cells?
- ANSWERS ✔ ✔The composition of the fluid
surrounding body cells is the same as that
within the cells.
What is the general purpose of positive
feedback mechanisms?
- ANSWERS ✔ ✔To bring about a rapid change
in the body.
,2|Page
What does the internal environment of the
body refer to?
- ANSWERS ✔ ✔The plasma, the interstitial
fluid, and the intracellular fluid combined.
True or False: One function of epithelial cells is
to form selective barriers regulating exchange
of materials across them
. - ANSWERS ✔ ✔True.
True or False: A person who is acclimated to a
hot environment will react physiologically to a
decreased environmental temperature faster
than someone who is not.
- ANSWERS ✔ ✔True.
,3|Page
True or False: When loss of a substance from
the body exceeds the gain, the body is said to
be in positive balance for that substance.
- ANSWERS ✔ ✔False.
What process is blood clotting an example of?
- ANSWERS ✔ ✔Positive feedback.
What type of control involves neurons in the
vagus nerve affecting heart rate?
- ANSWERS ✔ ✔Neural control.
What is the term for the developmental process
that leads to specialized cell types?
- ANSWERS ✔ ✔Differentiation.
, 4|Page
What is the breastfeeding process an example
of?
- ANSWERS ✔ ✔Positive feedback.
How is autocrine regulation best described?
- ANSWERS ✔ ✔Chemical regulators affect the
same cells that produce them.
What is the defining feature of the discipline of
physiology?
- ANSWERS ✔ ✔Homeostasis.
What is the order of components in a general
reflex arc following a stimulus?
- ANSWERS ✔ ✔Receptor, afferent pathway,
integrating center, efferent pathway, effector.
