, STUVIA EXAM LIBRARY
EXAMINATION DOCUMENT 16TH EDITION
Test Bank: Vander's Human Physiology (16th Edition) by Eric Widmaier
Chapters 1-19 Complete Exam Questions & Verified Detailed Answers Bundle
SMART WORK Edition
Original - Smart Work - Custom Vander's Physiology Cover
,Question 1 [Ch 1]: What is homeostasis?
A. Maintenance of stable internal environment
B. Unstable environment
C. Only external environment
D. No regulation
Correct answer: A
Rationale: Homeostasis = stable internal environment via negative feedback.
Question 2 [Ch 2]: Which is the primary extracellular cation?
A. Sodium
B. Potassium
C. Calcium
D. Magnesium
Correct answer: A
Rationale: Sodium is primary extracellular cation; potassium is intracellular.
Question 3 [Ch 3]: What is the resting membrane potential of neurons?
A. -70 mV
B. 0 mV
C. +70 mV
D. +100 mV
Correct answer: A
Rationale: Resting membrane potential approx -70 mV due to K+ leak and Na+/K+ pump.
Question 4 [Ch 4]: Which hormone is released from posterior pituitary?
A. ADH and oxytocin
B. GH and prolactin
C. TSH and ACTH
D. Insulin and glucagon
Correct answer: A
Rationale: Posterior pituitary stores/releases ADH and oxytocin from hypothalamus.
Question 5 [Ch 5]: What is the function of surfactant?
A. Reduces alveolar surface tension and prevents collapse
B. Increases surface tension
C. Causes bronchoconstriction
D. Increases blood pressure
Correct answer: A
Rationale: Surfactant lowers surface tension in alveoli preventing collapse.
Question 6 [Ch 6]: Where does most water reabsorption occur in nephron?
A. Proximal convoluted tubule
B. Distal tubule
C. Collecting duct only
, D. Glomerulus
Correct answer: A
Rationale: 65% water and Na+ reabsorbed in PCT.
Question 7 [Ch 7]: Which is true about cardiac output?
A. Heart rate x stroke volume
B. Heart rate only
C. Blood pressure only
D. Stroke volume only
Correct answer: A
Rationale: CO = HR x SV.
Question 8 [Ch 8]: What causes tetanus in muscle contraction?
A. High frequency stimuli with no relaxation
B. Single twitch
C. Low frequency
D. No calcium
Correct answer: A
Rationale: Tetanus = fused contractions from rapid stimulation.
Question 9 [Ch 9]: Which blood type is universal donor for RBCs?
A. O negative
B. AB positive
C. A positive
D. B negative
Correct answer: A
Rationale: O negative RBCs have no A/B antigens.
Question 10 [Ch 10]: What is the role of parathyroid hormone?
A. Increases blood calcium
B. Decreases blood calcium
C. Increases blood glucose
D. Decreases blood glucose
Correct answer: A
Rationale: PTH raises calcium via bone resorption, renal reabsorption, vitamin D activation.
Question 11 [Ch 11]: Which is second messenger?
A. cAMP
B. DNA
C. ATP always
D. Glucose
Correct answer: A
Rationale: cAMP is classic second messenger.
EXAMINATION DOCUMENT 16TH EDITION
Test Bank: Vander's Human Physiology (16th Edition) by Eric Widmaier
Chapters 1-19 Complete Exam Questions & Verified Detailed Answers Bundle
SMART WORK Edition
Original - Smart Work - Custom Vander's Physiology Cover
,Question 1 [Ch 1]: What is homeostasis?
A. Maintenance of stable internal environment
B. Unstable environment
C. Only external environment
D. No regulation
Correct answer: A
Rationale: Homeostasis = stable internal environment via negative feedback.
Question 2 [Ch 2]: Which is the primary extracellular cation?
A. Sodium
B. Potassium
C. Calcium
D. Magnesium
Correct answer: A
Rationale: Sodium is primary extracellular cation; potassium is intracellular.
Question 3 [Ch 3]: What is the resting membrane potential of neurons?
A. -70 mV
B. 0 mV
C. +70 mV
D. +100 mV
Correct answer: A
Rationale: Resting membrane potential approx -70 mV due to K+ leak and Na+/K+ pump.
Question 4 [Ch 4]: Which hormone is released from posterior pituitary?
A. ADH and oxytocin
B. GH and prolactin
C. TSH and ACTH
D. Insulin and glucagon
Correct answer: A
Rationale: Posterior pituitary stores/releases ADH and oxytocin from hypothalamus.
Question 5 [Ch 5]: What is the function of surfactant?
A. Reduces alveolar surface tension and prevents collapse
B. Increases surface tension
C. Causes bronchoconstriction
D. Increases blood pressure
Correct answer: A
Rationale: Surfactant lowers surface tension in alveoli preventing collapse.
Question 6 [Ch 6]: Where does most water reabsorption occur in nephron?
A. Proximal convoluted tubule
B. Distal tubule
C. Collecting duct only
, D. Glomerulus
Correct answer: A
Rationale: 65% water and Na+ reabsorbed in PCT.
Question 7 [Ch 7]: Which is true about cardiac output?
A. Heart rate x stroke volume
B. Heart rate only
C. Blood pressure only
D. Stroke volume only
Correct answer: A
Rationale: CO = HR x SV.
Question 8 [Ch 8]: What causes tetanus in muscle contraction?
A. High frequency stimuli with no relaxation
B. Single twitch
C. Low frequency
D. No calcium
Correct answer: A
Rationale: Tetanus = fused contractions from rapid stimulation.
Question 9 [Ch 9]: Which blood type is universal donor for RBCs?
A. O negative
B. AB positive
C. A positive
D. B negative
Correct answer: A
Rationale: O negative RBCs have no A/B antigens.
Question 10 [Ch 10]: What is the role of parathyroid hormone?
A. Increases blood calcium
B. Decreases blood calcium
C. Increases blood glucose
D. Decreases blood glucose
Correct answer: A
Rationale: PTH raises calcium via bone resorption, renal reabsorption, vitamin D activation.
Question 11 [Ch 11]: Which is second messenger?
A. cAMP
B. DNA
C. ATP always
D. Glucose
Correct answer: A
Rationale: cAMP is classic second messenger.
