Test Bank for Fundamentals of Anatomy and Physiology
12th Edition Frederic H. Martini Complete Chapters 1–
28 Exam Questions and Verified Answers 2025–2026
UNIT 1: LEVELS OF ORGANIZATION (Chapters 1–4)
Chapter 1: An Introduction to Anatomy and Physiology
1. A researcher is studying how the kidneys filter blood and regulate fluid balance.
This investigation would most accurately be classified as:
A. Gross anatomy
B. Systemic physiology
C. Microscopic anatomy
D. Regional anatomy
Correct Answer: B
Rationale: Systemic physiology examines the function of specific organ
systems, such as the urinary system. Gross and microscopic anatomy focus on
structure, while regional anatomy examines specific body areas.
2. Which of the following best describes the relationship between structure and
function in the human body?
A. Structure is independent of function
B. Function determines structure only during development
C. Structure and function are closely integrated at all levels of organization
D. Function can be understood without knowledge of structure
Correct Answer: C
Rationale: The principle that structure and function are interrelated applies at
every organizational level. For example, thin alveolar walls facilitate diffusion, and
the structure of a joint determines its range of motion.
,3. (SATA) Select ALL of the following that represent levels of organization from
simplest to most complex:
A. Atom → Molecule → Cell → Tissue → Organ → Organ System → Organism
B. Tissue → Cell → Organ → Molecule
C. Molecule → Cell → Tissue → Organ → Organ System
D. Cell → Atom → Tissue → Organ
Correct Answers: A, C
Rationale: The correct hierarchical sequence is: atoms → molecules → cells →
tissues → organs → organ systems → organism. Option B is incorrect because cells
come before tissues. Option D incorrectly places atoms after cells.
4. A patient's core body temperature remains stable at approximately 37°C
despite exercising in a hot environment. This stability is an example of:
A. Positive feedback
B. Homeostasis
C. Pathological function
D. Structural adaptation
Correct Answer: B
Rationale: Homeostasis is the body's ability to maintain a relatively stable
internal environment. Thermoregulation involves negative feedback mechanisms
that counteract deviations from the set point.
5. During childbirth, uterine contractions intensify as the baby's head pushes
against the cervix, triggering oxytocin release. This is an example of:
A. Negative feedback
B. Positive feedback
,C. Homeostatic imbalance
D. Feedforward control
Correct Answer: B
Rationale: Positive feedback amplifies the initial stimulus. In childbirth,
cervical stretching → oxytocin release → stronger contractions → more cervical
stretching. This cycle continues until the baby is delivered.
Chapter 2: The Chemical Level of Organization
6. A solution with a pH of 2 is:
A. Weakly acidic
B. Strongly acidic
C. Neutral
D. Weakly basic
Correct Answer: B
Rationale: The pH scale ranges from 0 to 14, with 7 being neutral. A pH of 2
indicates a tenfold increase in hydrogen ion concentration compared to pH 3,
making it strongly acidic.
7. Which type of bond involves the sharing of electron pairs between atoms?
A. Ionic bond
B. Hydrogen bond
C. Covalent bond
D. Van der Waals interaction
Correct Answer: C
Rationale: Covalent bonds form when atoms share electron pairs. Ionic bonds
involve electron transfer, hydrogen bonds are weak attractions between polar
molecules, and Van der Waals forces are transient dipole interactions.
, 8. (SATA) Select ALL of the following that are functions of proteins in the body:
A. Catalyzing metabolic reactions
B. Long-term energy storage
C. Transporting molecules across membranes
D. Providing structural support
E. Storing genetic information
Correct Answers: A, C, D
Rationale: Proteins function as enzymes (catalysts), transporters, and
structural components. Long-term energy storage is primarily a function of lipids
(triglycerides), and genetic information is stored in nucleic acids (DNA/RNA).
9. A patient's blood pH drops to 7.25. The bicarbonate buffer system will:
A. Release hydrogen ions to raise pH
B. Bind hydrogen ions to raise pH
C. Convert to carbonic acid to lower pH
D. Have no effect on pH
Correct Answer: B
Rationale: When pH decreases (acidosis), the bicarbonate buffer system binds
excess hydrogen ions (H⁺ + HCO₃⁻ → H₂CO₃), removing free H⁺ from solution and
raising pH toward normal.
10. Which of the following is the primary source of immediate energy for cellular
activities?
A. Glucose
B. ATP
12th Edition Frederic H. Martini Complete Chapters 1–
28 Exam Questions and Verified Answers 2025–2026
UNIT 1: LEVELS OF ORGANIZATION (Chapters 1–4)
Chapter 1: An Introduction to Anatomy and Physiology
1. A researcher is studying how the kidneys filter blood and regulate fluid balance.
This investigation would most accurately be classified as:
A. Gross anatomy
B. Systemic physiology
C. Microscopic anatomy
D. Regional anatomy
Correct Answer: B
Rationale: Systemic physiology examines the function of specific organ
systems, such as the urinary system. Gross and microscopic anatomy focus on
structure, while regional anatomy examines specific body areas.
2. Which of the following best describes the relationship between structure and
function in the human body?
A. Structure is independent of function
B. Function determines structure only during development
C. Structure and function are closely integrated at all levels of organization
D. Function can be understood without knowledge of structure
Correct Answer: C
Rationale: The principle that structure and function are interrelated applies at
every organizational level. For example, thin alveolar walls facilitate diffusion, and
the structure of a joint determines its range of motion.
,3. (SATA) Select ALL of the following that represent levels of organization from
simplest to most complex:
A. Atom → Molecule → Cell → Tissue → Organ → Organ System → Organism
B. Tissue → Cell → Organ → Molecule
C. Molecule → Cell → Tissue → Organ → Organ System
D. Cell → Atom → Tissue → Organ
Correct Answers: A, C
Rationale: The correct hierarchical sequence is: atoms → molecules → cells →
tissues → organs → organ systems → organism. Option B is incorrect because cells
come before tissues. Option D incorrectly places atoms after cells.
4. A patient's core body temperature remains stable at approximately 37°C
despite exercising in a hot environment. This stability is an example of:
A. Positive feedback
B. Homeostasis
C. Pathological function
D. Structural adaptation
Correct Answer: B
Rationale: Homeostasis is the body's ability to maintain a relatively stable
internal environment. Thermoregulation involves negative feedback mechanisms
that counteract deviations from the set point.
5. During childbirth, uterine contractions intensify as the baby's head pushes
against the cervix, triggering oxytocin release. This is an example of:
A. Negative feedback
B. Positive feedback
,C. Homeostatic imbalance
D. Feedforward control
Correct Answer: B
Rationale: Positive feedback amplifies the initial stimulus. In childbirth,
cervical stretching → oxytocin release → stronger contractions → more cervical
stretching. This cycle continues until the baby is delivered.
Chapter 2: The Chemical Level of Organization
6. A solution with a pH of 2 is:
A. Weakly acidic
B. Strongly acidic
C. Neutral
D. Weakly basic
Correct Answer: B
Rationale: The pH scale ranges from 0 to 14, with 7 being neutral. A pH of 2
indicates a tenfold increase in hydrogen ion concentration compared to pH 3,
making it strongly acidic.
7. Which type of bond involves the sharing of electron pairs between atoms?
A. Ionic bond
B. Hydrogen bond
C. Covalent bond
D. Van der Waals interaction
Correct Answer: C
Rationale: Covalent bonds form when atoms share electron pairs. Ionic bonds
involve electron transfer, hydrogen bonds are weak attractions between polar
molecules, and Van der Waals forces are transient dipole interactions.
, 8. (SATA) Select ALL of the following that are functions of proteins in the body:
A. Catalyzing metabolic reactions
B. Long-term energy storage
C. Transporting molecules across membranes
D. Providing structural support
E. Storing genetic information
Correct Answers: A, C, D
Rationale: Proteins function as enzymes (catalysts), transporters, and
structural components. Long-term energy storage is primarily a function of lipids
(triglycerides), and genetic information is stored in nucleic acids (DNA/RNA).
9. A patient's blood pH drops to 7.25. The bicarbonate buffer system will:
A. Release hydrogen ions to raise pH
B. Bind hydrogen ions to raise pH
C. Convert to carbonic acid to lower pH
D. Have no effect on pH
Correct Answer: B
Rationale: When pH decreases (acidosis), the bicarbonate buffer system binds
excess hydrogen ions (H⁺ + HCO₃⁻ → H₂CO₃), removing free H⁺ from solution and
raising pH toward normal.
10. Which of the following is the primary source of immediate energy for cellular
activities?
A. Glucose
B. ATP
