Test Bank - Structure and Function of
the Body (17th Edition by Patton,
Thompson, Williamson) | All Chapters
1-22 Complete, Verified Questions &
A+ Grade Answers Guide 2026-2027
Ace your anatomy course with the complete Test Bank for Structure and Function of the Body, 17th
Edition by Patton, Thompson, and Williamson. This premium A+ guide covers all 22 chapters with
100% verified multiple-choice questions, accurate answers, and detailed rationales. Perfect for
nursing and allied health students looking to master homeostatic loops, organ systems, and tissue
structures. Instantly boost your exam preparation, save study time, and guarantee top grades.
1. Which specific chemical bond is formed when one or more electrons are completely
transferred from one atom to another?
• a. Covalent bond
• b. Ionic bond
• c. Hydrogen bond
• d. Peptide bond
• Answer: b. Ionic bond
• Rationale: Ionic bonds result from the electrostatic attraction between oppositely
charged ions formed when valence electrons transfer. Covalent bonds involve
sharing electrons, while hydrogen bonds are weak attractions between polar
molecules.
2. What is the normal, healthy pH range of human arterial blood?
• a. 6.35 to 6.45
• b. 7.00 to 7.15
• c. 7.35 to 7.45
• d. 7.85 to 7.95
• Answer: c. 7.35 to 7.45
• Rationale: Human blood is strictly maintained in a slightly alkaline state. Any
deviation below 7.35 causes acidosis, and any rise above 7.45 leads to alkalosis.
3. Which organelle serves as the primary site for ATP synthesis via aerobic
cellular respiration?
• a. Mitochondrion
• b. Ribosome
• c. Lysosome
• d. Endoplasmic reticulum
,• Answer: a. Mitochondrion
• Rationale: Mitochondria are the powerhouses of the cell, converting glucose
derivatives into ATP using oxygen. Ribosomes make proteins, and lysosomes break
down cellular waste.
4. What passive transport process describes the net movement of water
molecules through a selectively permeable membrane from low solute to high solute
concentration?
• a. Facilitated diffusion
• b. Active transport
• c. Filtration
• d. Osmosis
• Answer: d. Osmosis
• Rationale: Osmosis is exclusively the diffusion of water down its concentration
gradient across a membrane. Active transport requires ATP energy, and filtration
relies on hydrostatic pressure gradients.
5. Which phase of mitosis involves the alignment of chromosomes along the
exact center equatorial plate of the cell?
• a. Prophase
• b. Metaphase
• c. Anaphase
• d. Telophase
• Answer: b. Metaphase
• Rationale: During metaphase, spindle fibers pull sister chromatids until they line up
flat along the metaphase plate. Anaphase follows, separating them to opposite
poles.
6. What type of epithelial tissue features a single layer of flat, scale-like cells
optimized for rapid diffusion and filtration?
• a. Simple squamous epithelium
• b. Stratified squamous epithelium
• c. Simple cuboidal epithelium
• d. Pseudostratified columnar epithelium
• Answer: a. Simple squamous epithelium
• Rationale: Simple squamous epithelium is thin and permeable, lining capillary walls
and lung alveoli. Stratified epithelium consists of multiple protective cell layers.
7. Which membrane lines joints and fluid-filled cavities, secreting a lubricating
fluid that prevents friction between bones?
• a. Mucous membrane
• b. Serous membrane
,• c. Cutaneous membrane
• d. Synovial membrane
• Answer: d. Synovial membrane
• Rationale: Synovial membranes are connective tissue structures lining joint
capsules. Mucous, serous, and cutaneous membranes are all varieties of epithelial
sheets.
8. What protein pigment gives skin, hair, and eyes their color while protecting
underlying tissues from harmful ultraviolet radiation?
• a. Keratin
• b. Melanin
• c. Collagen
• d. Carotene
• Answer: b. Melanin
• Rationale: Melanin is produced by melanocytes in the stratum basale to block UV
rays. Keratin is a tough, fibrous structural protein that waterproofs the outer skin
layer.
9. Which layer of the epidermis undergoes continuous cell division to replace
outer skin cells that flake away?
• a. Stratum corneum
• b. Stratum lucidum
• c. Stratum granulosum
• d. Stratum basale
• Answer: d. Stratum basale
• Rationale: The stratum basale is the deepest, single layer of stem cells that
constantly undergoes mitosis. The stratum corneum consists of fully keratinized,
dead cells.
10. What type of bone cell is trapped within a lacuna and works actively to
maintain mature bone matrix?
• a. Osteoblast
• b. Osteocyte
• c. Osteoclast
• d. Chondrocyte
• Answer: b. Osteocyte
• Rationale: Osteocytes are mature bone cells housed in small spaces called
lacunae. Osteoblasts actively deposit new bone matrix, whereas osteoclasts dissolve
it.
11. Which structure contains the nutrient-rich, fat-storing yellow marrow found
inside the central shaft of adult long bones?
, • a. Epiphysis
• b. Medullary cavity
• c. Periosteum
• d. Endosteum
• Answer: b. Medullary cavity
• Rationale: The medullary cavity is the hollow core of a long bone's diaphysis shaft.
In adults, it is filled with adipose tissue called yellow marrow.
12. What section of the vertebral column is composed of exactly twelve distinct,
individual vertebrae?
• a. Cervical
• b. Thoracic
• c. Lumbar
• d. Sacral
• Answer: b. Thoracic
• Rationale: The vertebral column contains 7 cervical, 12 thoracic (which articulate
with the 12 pairs of ribs), and 5 lumbar vertebrae.
13. What unique structural neurotransmitter is released at the neuromuscular
junction to trigger skeletal muscle contraction?
• a. Dopamine
• b. Epinephrine
• c. Acetylcholine
• d. Serotonin
• Answer: c. Acetylcholine
• Rationale: Acetylcholine (ACh) crosses the synaptic cleft of a muscle fiber, binding
to receptors to open sodium channels and start an action potential.
14. During skeletal muscle contraction, what mineral ion binds directly to troponin
to uncover active binding sites on actin filaments?
• a. Sodium
• b. Potassium
• c. Calcium
• d. Magnesium
• Answer: c. Calcium
• Rationale: Calcium ions released from the sarcoplasmic reticulum bind to troponin,
shifting tropomyosin off the binding sites so myosin heads can attach.
15. What basic functional, contractile unit of a muscle fiber is located directly
between two adjacent Z-lines?
• a. Sarcomere
• b. Myofibril
the Body (17th Edition by Patton,
Thompson, Williamson) | All Chapters
1-22 Complete, Verified Questions &
A+ Grade Answers Guide 2026-2027
Ace your anatomy course with the complete Test Bank for Structure and Function of the Body, 17th
Edition by Patton, Thompson, and Williamson. This premium A+ guide covers all 22 chapters with
100% verified multiple-choice questions, accurate answers, and detailed rationales. Perfect for
nursing and allied health students looking to master homeostatic loops, organ systems, and tissue
structures. Instantly boost your exam preparation, save study time, and guarantee top grades.
1. Which specific chemical bond is formed when one or more electrons are completely
transferred from one atom to another?
• a. Covalent bond
• b. Ionic bond
• c. Hydrogen bond
• d. Peptide bond
• Answer: b. Ionic bond
• Rationale: Ionic bonds result from the electrostatic attraction between oppositely
charged ions formed when valence electrons transfer. Covalent bonds involve
sharing electrons, while hydrogen bonds are weak attractions between polar
molecules.
2. What is the normal, healthy pH range of human arterial blood?
• a. 6.35 to 6.45
• b. 7.00 to 7.15
• c. 7.35 to 7.45
• d. 7.85 to 7.95
• Answer: c. 7.35 to 7.45
• Rationale: Human blood is strictly maintained in a slightly alkaline state. Any
deviation below 7.35 causes acidosis, and any rise above 7.45 leads to alkalosis.
3. Which organelle serves as the primary site for ATP synthesis via aerobic
cellular respiration?
• a. Mitochondrion
• b. Ribosome
• c. Lysosome
• d. Endoplasmic reticulum
,• Answer: a. Mitochondrion
• Rationale: Mitochondria are the powerhouses of the cell, converting glucose
derivatives into ATP using oxygen. Ribosomes make proteins, and lysosomes break
down cellular waste.
4. What passive transport process describes the net movement of water
molecules through a selectively permeable membrane from low solute to high solute
concentration?
• a. Facilitated diffusion
• b. Active transport
• c. Filtration
• d. Osmosis
• Answer: d. Osmosis
• Rationale: Osmosis is exclusively the diffusion of water down its concentration
gradient across a membrane. Active transport requires ATP energy, and filtration
relies on hydrostatic pressure gradients.
5. Which phase of mitosis involves the alignment of chromosomes along the
exact center equatorial plate of the cell?
• a. Prophase
• b. Metaphase
• c. Anaphase
• d. Telophase
• Answer: b. Metaphase
• Rationale: During metaphase, spindle fibers pull sister chromatids until they line up
flat along the metaphase plate. Anaphase follows, separating them to opposite
poles.
6. What type of epithelial tissue features a single layer of flat, scale-like cells
optimized for rapid diffusion and filtration?
• a. Simple squamous epithelium
• b. Stratified squamous epithelium
• c. Simple cuboidal epithelium
• d. Pseudostratified columnar epithelium
• Answer: a. Simple squamous epithelium
• Rationale: Simple squamous epithelium is thin and permeable, lining capillary walls
and lung alveoli. Stratified epithelium consists of multiple protective cell layers.
7. Which membrane lines joints and fluid-filled cavities, secreting a lubricating
fluid that prevents friction between bones?
• a. Mucous membrane
• b. Serous membrane
,• c. Cutaneous membrane
• d. Synovial membrane
• Answer: d. Synovial membrane
• Rationale: Synovial membranes are connective tissue structures lining joint
capsules. Mucous, serous, and cutaneous membranes are all varieties of epithelial
sheets.
8. What protein pigment gives skin, hair, and eyes their color while protecting
underlying tissues from harmful ultraviolet radiation?
• a. Keratin
• b. Melanin
• c. Collagen
• d. Carotene
• Answer: b. Melanin
• Rationale: Melanin is produced by melanocytes in the stratum basale to block UV
rays. Keratin is a tough, fibrous structural protein that waterproofs the outer skin
layer.
9. Which layer of the epidermis undergoes continuous cell division to replace
outer skin cells that flake away?
• a. Stratum corneum
• b. Stratum lucidum
• c. Stratum granulosum
• d. Stratum basale
• Answer: d. Stratum basale
• Rationale: The stratum basale is the deepest, single layer of stem cells that
constantly undergoes mitosis. The stratum corneum consists of fully keratinized,
dead cells.
10. What type of bone cell is trapped within a lacuna and works actively to
maintain mature bone matrix?
• a. Osteoblast
• b. Osteocyte
• c. Osteoclast
• d. Chondrocyte
• Answer: b. Osteocyte
• Rationale: Osteocytes are mature bone cells housed in small spaces called
lacunae. Osteoblasts actively deposit new bone matrix, whereas osteoclasts dissolve
it.
11. Which structure contains the nutrient-rich, fat-storing yellow marrow found
inside the central shaft of adult long bones?
, • a. Epiphysis
• b. Medullary cavity
• c. Periosteum
• d. Endosteum
• Answer: b. Medullary cavity
• Rationale: The medullary cavity is the hollow core of a long bone's diaphysis shaft.
In adults, it is filled with adipose tissue called yellow marrow.
12. What section of the vertebral column is composed of exactly twelve distinct,
individual vertebrae?
• a. Cervical
• b. Thoracic
• c. Lumbar
• d. Sacral
• Answer: b. Thoracic
• Rationale: The vertebral column contains 7 cervical, 12 thoracic (which articulate
with the 12 pairs of ribs), and 5 lumbar vertebrae.
13. What unique structural neurotransmitter is released at the neuromuscular
junction to trigger skeletal muscle contraction?
• a. Dopamine
• b. Epinephrine
• c. Acetylcholine
• d. Serotonin
• Answer: c. Acetylcholine
• Rationale: Acetylcholine (ACh) crosses the synaptic cleft of a muscle fiber, binding
to receptors to open sodium channels and start an action potential.
14. During skeletal muscle contraction, what mineral ion binds directly to troponin
to uncover active binding sites on actin filaments?
• a. Sodium
• b. Potassium
• c. Calcium
• d. Magnesium
• Answer: c. Calcium
• Rationale: Calcium ions released from the sarcoplasmic reticulum bind to troponin,
shifting tropomyosin off the binding sites so myosin heads can attach.
15. What basic functional, contractile unit of a muscle fiber is located directly
between two adjacent Z-lines?
• a. Sarcomere
• b. Myofibril
