BIOS255 / BIOS 255: Anatomy & Physiology III
with Lab – Chamberlain Actual Exam Test
Questions & Answers | 100% Correct | Grade A |
Pass Guaranteed - A+ Graded
Q1: When we look at how hormones work at the cellular level, why do steroid hormones
typically take longer to show an effect compared to peptide hormones?
A. Steroid hormones must first be actively transported across the cell membrane using
ATP
B. Steroid hormones bind to intracellular receptors and alter gene transcription, which
takes time to translate into new proteins [CORRECT]
C. Peptide hormones are much larger and therefore create a faster receptor response
D. Steroid hormones have to be completely broken down by the liver before they can
act on the target cell
Correct Answer: B
Rationale: The best answer is B because steroid hormones diffuse right into the nucleus
to change DNA expression, meaning the cell has to actually make new proteins from
scratch, which is a much slower process than the instant second-messenger cascades
peptide hormones trigger at the membrane.
Q2: Which specific structure serves as the critical anatomical bridge connecting the
nervous system to the endocrine system?
A. Posterior pituitary gland
B. Adrenal medulla
C. Pineal gland
D. Hypothalamus [CORRECT]
Correct Answer: D
Rationale: In A&P III we emphasize that the hypothalamus is the ultimate boss here,
sitting right at the base of the brain to translate neural signals into endocrine commands
by controlling the pituitary gland.
Q3: If a student is trying to remember the layers of the adrenal cortex and the hormones
they produce, which pairing is completely correct from the outermost to the innermost
layer?
A. Zona glomerulosa (aldosterone), Zona fasciculata (cortisol), Zona reticularis
(androgens) [CORRECT]
,B. Zona reticularis (aldosterone), Zona fasciculata (cortisol), Zona glomerulosa
(androgens)
C. Zona glomerulosa (cortisol), Zona fasciculata (androgens), Zona reticularis
(aldosterone)
D. Zona fasciculata (aldosterone), Zona glomerulosa (cortisol), Zona reticularis
(androgens)
Correct Answer: A
Rationale: That matches the hormone's action because the outer zone handles salt
(aldosterone), the middle zone handles sugar (cortisol), and the inner zone handles sex
(androgens), which is a great shortcut for students to remember.
Q4: A patient has a tumor causing hypersecretion of parathyroid hormone (PTH). What
is the direct physiological effect this excess hormone will have on the blood and bones?
A. It will decrease blood calcium and increase bone density
B. It will increase blood calcium and decrease bone density [CORRECT]
C. It will increase blood phosphate and increase bone density
D. It will decrease blood calcium and have no effect on bone density
Correct Answer: B
Rationale: The best answer is B because PTH acts like an emergency brake release on
osteoclasts, telling them to break down the bone matrix to dump calcium into the
bloodstream, which naturally weakens the bones over time.
Q5: In the pancreatic islets, which specific cell type is responsible for lowering blood
glucose levels, and what hormone does it secrete?
A. Alpha cells secreting glucagon
B. Beta cells secreting insulin [CORRECT]
C. Delta cells secreting somatostatin
D. Alpha cells secreting insulin
Correct Answer: B
Rationale: Remember the integration between systems for homeostasis, where beta
cells act as the body's key to unlock cells so glucose can leave the blood, directly
opposing the alpha cells that try to keep glucose trapped in the bloodstream.
Q6: What is the primary hormone secreted by the pineal gland, and what is its general
role in the human body?
A. Melatonin, which helps regulate the sleep-wake cycle [CORRECT]
B. Oxytocin, which stimulates uterine contractions during labor
C. Aldosterone, which regulates sodium reabsorption in the kidneys
D. Thymosin, which promotes T-cell maturation
Correct Answer: A
, Rationale: The best answer is melatonin because this little gland deep in the brain acts
as your biological clock, responding to light levels to make you feel sleepy when the sun
goes down.
Q7: A 35-year-old patient presents with severe anxiety, a heart rate of 120 bpm, profuse
sweating, and recent unexplained weight loss despite eating constantly. Which
endocrine disorder best explains these clinical manifestations?
A. Hypothyroidism
B. Cushing's syndrome
C. Hyperthyroidism [CORRECT]
D. Addison's disease
Correct Answer: C
Rationale: That matches the hormone's action because excess thyroid hormone cranks
the body's basal metabolic rate into overdrive, essentially making their cells burn fuel so
fast that they lose weight while their nervous system goes haywire.
Q8: A patient is severely dehydrated after being lost in the desert for two days. Which
hormone will be most actively secreted to prevent further water loss in the kidneys?
A. Aldosterone
B. Antidiuretic hormone (ADH) [CORRECT]
C. Atrial natriuretic peptide (ANP)
D. Parathyroid hormone (PTH)
Correct Answer: B
Rationale: The best answer is ADH because when the body's osmolarity gets too high
from dehydration, this hormone directly inserts water channels into the kidney tubules to
suck every possible drop of water back into the blood.
Q9: A nursing student is caring for two patients with diabetes mellitus. Patient A
requires daily insulin injections because their immune system destroyed their pancreatic
cells. Patient B controls their condition with oral medications and diet changes. What is
the underlying pathophysiology difference?
A. Patient A has Type 2 diabetes and Patient B has Type 1 diabetes
B. Patient A has Type 1 diabetes (autoimmune beta-cell destruction) and Patient B has
Type 2 diabetes (insulin resistance) [CORRECT]
C. Both patients have Type 1 diabetes but Patient B is in a honeymoon phase
D. Patient A has insulin resistance and Patient B has a lack of glucagon
Correct Answer: B
Rationale: Remember that in A&P III we distinguish between the absolute lack of insulin
seen in autoimmune Type 1 and the peripheral insulin resistance where the body still
makes insulin but the cells ignore it, which is the hallmark of Type 2.
with Lab – Chamberlain Actual Exam Test
Questions & Answers | 100% Correct | Grade A |
Pass Guaranteed - A+ Graded
Q1: When we look at how hormones work at the cellular level, why do steroid hormones
typically take longer to show an effect compared to peptide hormones?
A. Steroid hormones must first be actively transported across the cell membrane using
ATP
B. Steroid hormones bind to intracellular receptors and alter gene transcription, which
takes time to translate into new proteins [CORRECT]
C. Peptide hormones are much larger and therefore create a faster receptor response
D. Steroid hormones have to be completely broken down by the liver before they can
act on the target cell
Correct Answer: B
Rationale: The best answer is B because steroid hormones diffuse right into the nucleus
to change DNA expression, meaning the cell has to actually make new proteins from
scratch, which is a much slower process than the instant second-messenger cascades
peptide hormones trigger at the membrane.
Q2: Which specific structure serves as the critical anatomical bridge connecting the
nervous system to the endocrine system?
A. Posterior pituitary gland
B. Adrenal medulla
C. Pineal gland
D. Hypothalamus [CORRECT]
Correct Answer: D
Rationale: In A&P III we emphasize that the hypothalamus is the ultimate boss here,
sitting right at the base of the brain to translate neural signals into endocrine commands
by controlling the pituitary gland.
Q3: If a student is trying to remember the layers of the adrenal cortex and the hormones
they produce, which pairing is completely correct from the outermost to the innermost
layer?
A. Zona glomerulosa (aldosterone), Zona fasciculata (cortisol), Zona reticularis
(androgens) [CORRECT]
,B. Zona reticularis (aldosterone), Zona fasciculata (cortisol), Zona glomerulosa
(androgens)
C. Zona glomerulosa (cortisol), Zona fasciculata (androgens), Zona reticularis
(aldosterone)
D. Zona fasciculata (aldosterone), Zona glomerulosa (cortisol), Zona reticularis
(androgens)
Correct Answer: A
Rationale: That matches the hormone's action because the outer zone handles salt
(aldosterone), the middle zone handles sugar (cortisol), and the inner zone handles sex
(androgens), which is a great shortcut for students to remember.
Q4: A patient has a tumor causing hypersecretion of parathyroid hormone (PTH). What
is the direct physiological effect this excess hormone will have on the blood and bones?
A. It will decrease blood calcium and increase bone density
B. It will increase blood calcium and decrease bone density [CORRECT]
C. It will increase blood phosphate and increase bone density
D. It will decrease blood calcium and have no effect on bone density
Correct Answer: B
Rationale: The best answer is B because PTH acts like an emergency brake release on
osteoclasts, telling them to break down the bone matrix to dump calcium into the
bloodstream, which naturally weakens the bones over time.
Q5: In the pancreatic islets, which specific cell type is responsible for lowering blood
glucose levels, and what hormone does it secrete?
A. Alpha cells secreting glucagon
B. Beta cells secreting insulin [CORRECT]
C. Delta cells secreting somatostatin
D. Alpha cells secreting insulin
Correct Answer: B
Rationale: Remember the integration between systems for homeostasis, where beta
cells act as the body's key to unlock cells so glucose can leave the blood, directly
opposing the alpha cells that try to keep glucose trapped in the bloodstream.
Q6: What is the primary hormone secreted by the pineal gland, and what is its general
role in the human body?
A. Melatonin, which helps regulate the sleep-wake cycle [CORRECT]
B. Oxytocin, which stimulates uterine contractions during labor
C. Aldosterone, which regulates sodium reabsorption in the kidneys
D. Thymosin, which promotes T-cell maturation
Correct Answer: A
, Rationale: The best answer is melatonin because this little gland deep in the brain acts
as your biological clock, responding to light levels to make you feel sleepy when the sun
goes down.
Q7: A 35-year-old patient presents with severe anxiety, a heart rate of 120 bpm, profuse
sweating, and recent unexplained weight loss despite eating constantly. Which
endocrine disorder best explains these clinical manifestations?
A. Hypothyroidism
B. Cushing's syndrome
C. Hyperthyroidism [CORRECT]
D. Addison's disease
Correct Answer: C
Rationale: That matches the hormone's action because excess thyroid hormone cranks
the body's basal metabolic rate into overdrive, essentially making their cells burn fuel so
fast that they lose weight while their nervous system goes haywire.
Q8: A patient is severely dehydrated after being lost in the desert for two days. Which
hormone will be most actively secreted to prevent further water loss in the kidneys?
A. Aldosterone
B. Antidiuretic hormone (ADH) [CORRECT]
C. Atrial natriuretic peptide (ANP)
D. Parathyroid hormone (PTH)
Correct Answer: B
Rationale: The best answer is ADH because when the body's osmolarity gets too high
from dehydration, this hormone directly inserts water channels into the kidney tubules to
suck every possible drop of water back into the blood.
Q9: A nursing student is caring for two patients with diabetes mellitus. Patient A
requires daily insulin injections because their immune system destroyed their pancreatic
cells. Patient B controls their condition with oral medications and diet changes. What is
the underlying pathophysiology difference?
A. Patient A has Type 2 diabetes and Patient B has Type 1 diabetes
B. Patient A has Type 1 diabetes (autoimmune beta-cell destruction) and Patient B has
Type 2 diabetes (insulin resistance) [CORRECT]
C. Both patients have Type 1 diabetes but Patient B is in a honeymoon phase
D. Patient A has insulin resistance and Patient B has a lack of glucagon
Correct Answer: B
Rationale: Remember that in A&P III we distinguish between the absolute lack of insulin
seen in autoimmune Type 1 and the peripheral insulin resistance where the body still
makes insulin but the cells ignore it, which is the hallmark of Type 2.
