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GCU BIO202 EXAM 1 2025/2026
(ENDOCRINE AND BLOOD) NEW ACTUAL
EXAM WITH 100% VERIFIED QUESTIONS &
CORRECT ANSWERS
Hormones - Correct-answer-chemical messengers that are
manufactured by the endocrine glands, travel through the
bloodstream, and affect other tissues
negative feedback - Correct-answer-A primary mechanism of
homeostasis, whereby a change in a physiological variable that is being
monitored triggers a response that counteracts the initial fluctuation.
direct pathway - Correct-answer-hormones are exchanged across gap
junctions of cells, such as the intercalated discs of the heart. This
maintains homeostasis within a specific tissue set, rather than sending
it to other organ tissue or all across the body.
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Paracrine pathway - Correct-answer-hormones are produced in a cell,
secreted, and act directly on nearby receptive cells
endocrine pathway - Correct-answer-hormones are produced in a cell,
secreted, and travel through blood vessels to distant cells, attach to
receptors, and act on that cell
Glands - Correct-answer-Organs or tissues in the body that create
chemicals that control many of our bodily functions
target cells - Correct-answer-cells that have receptors for a particular
hormone
hormone receptor - Correct-answer-a protein in or on the cell that
binds to the hormone and initiates cellular mechanisms
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free hormones - Correct-answer-Remain functional for less than 1 hour
Diffuse out of bloodstream:
bind to receptors on target cells
Are broken down and absorbed:
by cells of liver or kidney
Are broken down by enzymes:
in plasma or interstitial fluids
Protein bound hormones - Correct-answer-hormones that remain in
the bloodstream for long amounts of time. The glands secrete them in
abudance, but they are only released when the other proteins run out
i.e. steroid hormones
zona reticularis - Correct-answer-produces gonadocorticoids
zona fasciculata - Correct-answer-produces androgens
GCU BIO202 EXAM 1 2025/2026
(ENDOCRINE AND BLOOD) NEW ACTUAL
EXAM WITH 100% VERIFIED QUESTIONS &
CORRECT ANSWERS
Hormones - Correct-answer-chemical messengers that are
manufactured by the endocrine glands, travel through the
bloodstream, and affect other tissues
negative feedback - Correct-answer-A primary mechanism of
homeostasis, whereby a change in a physiological variable that is being
monitored triggers a response that counteracts the initial fluctuation.
direct pathway - Correct-answer-hormones are exchanged across gap
junctions of cells, such as the intercalated discs of the heart. This
maintains homeostasis within a specific tissue set, rather than sending
it to other organ tissue or all across the body.
,2|Page
Paracrine pathway - Correct-answer-hormones are produced in a cell,
secreted, and act directly on nearby receptive cells
endocrine pathway - Correct-answer-hormones are produced in a cell,
secreted, and travel through blood vessels to distant cells, attach to
receptors, and act on that cell
Glands - Correct-answer-Organs or tissues in the body that create
chemicals that control many of our bodily functions
target cells - Correct-answer-cells that have receptors for a particular
hormone
hormone receptor - Correct-answer-a protein in or on the cell that
binds to the hormone and initiates cellular mechanisms
, 3|Page
free hormones - Correct-answer-Remain functional for less than 1 hour
Diffuse out of bloodstream:
bind to receptors on target cells
Are broken down and absorbed:
by cells of liver or kidney
Are broken down by enzymes:
in plasma or interstitial fluids
Protein bound hormones - Correct-answer-hormones that remain in
the bloodstream for long amounts of time. The glands secrete them in
abudance, but they are only released when the other proteins run out
i.e. steroid hormones
zona reticularis - Correct-answer-produces gonadocorticoids
zona fasciculata - Correct-answer-produces androgens
