ANATOMY & PHYSIOLOGY 2 FINAL EXAM PROVIDED WITH
FACTUAL &ACCURATE QUESTIONS AND ANSWERS -ALSO
ENHANCED WITH SUFFICIENT RATIONALES _<A DOCUMENT
THAT HAS SEEN MANY SUCCEED IN THEIR EXAMS>_(UPDATE
VERSION RELEASE OF 2026)
1. Which of the following is a primary difference between the nervous and endocrine systems?
A) The nervous system uses neurotransmitters; the endocrine system uses hormones.
B) The nervous system has long-lasting effects; the endocrine system has short-term effects.
C) The nervous system responds slowly; the endocrine system responds rapidly.
D) The nervous system broadcasts signals widely; the endocrine system targets specific cells.
Answer: A
Rationale:The nervous system communicates via neurotransmitters across synapses, leading to
rapid, short-lived responses. The endocrine system secretes hormones into the blood, resulting
in slower onset but longer-lasting effects. Both can target specific cells (target cells have
receptors).
2. Which class of hormones requires a second messenger to exert its cellular effects?
A) Steroid hormones
B) Thyroid hormones
C) Peptide hormones
D) Eicosanoids
Answer: C
Rationale: Peptide (and amine) hormones are water-soluble and cannot cross the lipid bilayer of
the cell membrane. They bind to surface receptors and activate intracellular second
messengers (like cAMP). Steroid and thyroid hormones are lipid-soluble and enter the cell to act
directly on the nucleus.
3. The hypothalamus regulates the anterior pituitary via:
A) Direct neural connections
,B) The hypophyseal portal system
C) The infundibular process
D) Cerebrospinal fluid
Answer: B
Rationale:The hypothalamus communicates with the anterior pituitary through releasing and
inhibiting hormones carried by the hypophyseal portal system, a specialized network of blood
vessels connecting the two structures.
4. Which of the following hormones is released by the posterior pituitary?
A) Prolactin
B) Growth Hormone
C) Oxytocin
D) Adrenocorticotropic Hormone (ACTH)
Answer: C
Rationale: The posterior pituitary stores and releases oxytocin and ADH (vasopressin), which
are produced by neurosecretory cells in the hypothalamus. Prolactin, GH, and ACTH are
produced by the anterior pituitary.
5. Hypersecretion of cortisol from the adrenal cortex results in:
A) Addison’s disease
B) Cushing’s disease
C) Graves’ disease
D) Myxedema
Answer:B
Rationale:Cushing’s disease/syndrome is characterized by excess cortisol, leading to a "moon
face," buffalo hump, hyperglycemia, and muscle wasting. Addison’s disease is hyposecretion of
adrenal corticosteroids.
6. The parathyroid glands are responsible for regulating which electrolyte?
A) Sodium
B) Potassium
C) Calcium
,D) Chloride
Answer: C
Rationale: Parathyroid hormone (PTH) increases blood calcium levels by stimulating
osteoclasts, increasing calcium absorption in the intestines (via vitamin D), and increasing
calcium reabsorption in the kidneys.
7. Which cells of the pancreas secrete insulin?
A) Alpha cells
B) Beta cells
C) Delta cells
D) PP cells
Answer: B
Rationale:Pancreatic beta cells secrete insulin, which lowers blood glucose. Alpha cells secrete
glucagon, which raises blood glucose.
8. A patient presents with a swollen neck (goiter) and low metabolic rate. They likely have:
A) Hyperthyroidism
B) Hypothyroidism due to low TSH
C) Hypothyroidism due to low dietary iodine
D) Hyperparathyroidism
Answer: C
Rationale Low dietary iodine prevents the synthesis of T3/T4. The lack of thyroid hormones
removes negative feedback on the pituitary, causing high TSH levels, which stimulates the
thyroid gland to enlarge (goiter) despite being unable to produce hormones.
9. The hormone that plays a crucial role in the body's response to long-term stress by promoting
gluconeogenesis is:
A) Epinephrine
B) Norepinephrine
C) Cortisol
D) Aldosterone
Answer:C
, Rationale Cortisol is a glucocorticoid released during chronic stress that promotes the
breakdown of fats and proteins into glucose (gluconeogenesis) to maintain energy supplies.
10. Which hormone is primarily involved in the regulation of the sleep-wake cycle?
A) Melatonin
B) Serotonin
C) Thymosin
D) Progesterone
Answer:A
Rationale: Melatonin is produced by the pineal gland and regulates circadian rhythms,
promoting sleepiness.
11. The most abundant plasma protein, responsible for maintaining osmotic pressure, is:
A) Fibrinogen
B) Globulin
C) Albumin
D) Hemoglobin
Answer: C
Rationale: Albumin makes up about 60% of plasma proteins and is the primary contributor to
blood colloid osmotic pressure, which prevents water from leaving the capillaries.
12. Which type of white blood cell is the first to respond to an acute bacterial infection?
A) Eosinophil
B) Basophil
C) Monocyte
D) Neutrophil
Answer: D
Rationale: Neutrophils are the most abundant WBCs and the body's first line of defense against
bacterial infections, engaging in phagocytosis.
13. The intrinsic pathway of coagulation is initiated by:
A) Tissue factor (Factor III)
FACTUAL &ACCURATE QUESTIONS AND ANSWERS -ALSO
ENHANCED WITH SUFFICIENT RATIONALES _<A DOCUMENT
THAT HAS SEEN MANY SUCCEED IN THEIR EXAMS>_(UPDATE
VERSION RELEASE OF 2026)
1. Which of the following is a primary difference between the nervous and endocrine systems?
A) The nervous system uses neurotransmitters; the endocrine system uses hormones.
B) The nervous system has long-lasting effects; the endocrine system has short-term effects.
C) The nervous system responds slowly; the endocrine system responds rapidly.
D) The nervous system broadcasts signals widely; the endocrine system targets specific cells.
Answer: A
Rationale:The nervous system communicates via neurotransmitters across synapses, leading to
rapid, short-lived responses. The endocrine system secretes hormones into the blood, resulting
in slower onset but longer-lasting effects. Both can target specific cells (target cells have
receptors).
2. Which class of hormones requires a second messenger to exert its cellular effects?
A) Steroid hormones
B) Thyroid hormones
C) Peptide hormones
D) Eicosanoids
Answer: C
Rationale: Peptide (and amine) hormones are water-soluble and cannot cross the lipid bilayer of
the cell membrane. They bind to surface receptors and activate intracellular second
messengers (like cAMP). Steroid and thyroid hormones are lipid-soluble and enter the cell to act
directly on the nucleus.
3. The hypothalamus regulates the anterior pituitary via:
A) Direct neural connections
,B) The hypophyseal portal system
C) The infundibular process
D) Cerebrospinal fluid
Answer: B
Rationale:The hypothalamus communicates with the anterior pituitary through releasing and
inhibiting hormones carried by the hypophyseal portal system, a specialized network of blood
vessels connecting the two structures.
4. Which of the following hormones is released by the posterior pituitary?
A) Prolactin
B) Growth Hormone
C) Oxytocin
D) Adrenocorticotropic Hormone (ACTH)
Answer: C
Rationale: The posterior pituitary stores and releases oxytocin and ADH (vasopressin), which
are produced by neurosecretory cells in the hypothalamus. Prolactin, GH, and ACTH are
produced by the anterior pituitary.
5. Hypersecretion of cortisol from the adrenal cortex results in:
A) Addison’s disease
B) Cushing’s disease
C) Graves’ disease
D) Myxedema
Answer:B
Rationale:Cushing’s disease/syndrome is characterized by excess cortisol, leading to a "moon
face," buffalo hump, hyperglycemia, and muscle wasting. Addison’s disease is hyposecretion of
adrenal corticosteroids.
6. The parathyroid glands are responsible for regulating which electrolyte?
A) Sodium
B) Potassium
C) Calcium
,D) Chloride
Answer: C
Rationale: Parathyroid hormone (PTH) increases blood calcium levels by stimulating
osteoclasts, increasing calcium absorption in the intestines (via vitamin D), and increasing
calcium reabsorption in the kidneys.
7. Which cells of the pancreas secrete insulin?
A) Alpha cells
B) Beta cells
C) Delta cells
D) PP cells
Answer: B
Rationale:Pancreatic beta cells secrete insulin, which lowers blood glucose. Alpha cells secrete
glucagon, which raises blood glucose.
8. A patient presents with a swollen neck (goiter) and low metabolic rate. They likely have:
A) Hyperthyroidism
B) Hypothyroidism due to low TSH
C) Hypothyroidism due to low dietary iodine
D) Hyperparathyroidism
Answer: C
Rationale Low dietary iodine prevents the synthesis of T3/T4. The lack of thyroid hormones
removes negative feedback on the pituitary, causing high TSH levels, which stimulates the
thyroid gland to enlarge (goiter) despite being unable to produce hormones.
9. The hormone that plays a crucial role in the body's response to long-term stress by promoting
gluconeogenesis is:
A) Epinephrine
B) Norepinephrine
C) Cortisol
D) Aldosterone
Answer:C
, Rationale Cortisol is a glucocorticoid released during chronic stress that promotes the
breakdown of fats and proteins into glucose (gluconeogenesis) to maintain energy supplies.
10. Which hormone is primarily involved in the regulation of the sleep-wake cycle?
A) Melatonin
B) Serotonin
C) Thymosin
D) Progesterone
Answer:A
Rationale: Melatonin is produced by the pineal gland and regulates circadian rhythms,
promoting sleepiness.
11. The most abundant plasma protein, responsible for maintaining osmotic pressure, is:
A) Fibrinogen
B) Globulin
C) Albumin
D) Hemoglobin
Answer: C
Rationale: Albumin makes up about 60% of plasma proteins and is the primary contributor to
blood colloid osmotic pressure, which prevents water from leaving the capillaries.
12. Which type of white blood cell is the first to respond to an acute bacterial infection?
A) Eosinophil
B) Basophil
C) Monocyte
D) Neutrophil
Answer: D
Rationale: Neutrophils are the most abundant WBCs and the body's first line of defense against
bacterial infections, engaging in phagocytosis.
13. The intrinsic pathway of coagulation is initiated by:
A) Tissue factor (Factor III)
