OPENSTAX
ANATOMY AND
PHYSIOLOGY 2ND
EDITION |
COMPLETE TEST
BANK |
LATEST 2025/2026
,UNIT 1: LEVELS OF ORGANIZATION
Chapter 1: An Introduction to the Human Body
Keywords
anatomy, physiology, gross anatomy, microscopic anatomy, levels of
organization, homeostasis, negative feedback, positive feedback, anatomical
position, directional terms, body cavities, serous membranes
Question 1
The study of the function of the body's structures is called:
A) Anatomy
B) Physiology
C) Histology
D) Cytology
Correct Answer: B
Rationale:
Correct (B): Physiology is the scientific study of the function of the body's
structures, focusing on how they work and interact to maintain life. Anatomy
,(A) is the study of structure; histology (C) is the study of tissues; cytology (D)
is the study of cells. Form (anatomy) and function (physiology) are
inseparable in living organisms.
Incorrect (A): Anatomy studies structure, not function.
Incorrect (C): Histology studies tissues under a microscope.
Incorrect (D): Cytology studies individual cells.
Study Tip: "Anatomy = structure (what it is). Physiology = function (what it
does)."
Question 2
Which of the following represents the correct order of structural organization
in the human body, from simplest to most complex?
A) Organ → Tissue → Cell → Organ system → Organism
B) Cell → Tissue → Organ → Organ system → Organism
C) Cell → Organ → Tissue → Organ system → Organism
D) Tissue → Cell → Organ → Organ system → Organism
Correct Answer: B
Rationale:
Correct (B): The hierarchy of structural organization is: chemical
(atoms/molecules) → cellular (cells) → tissue (groups of similar cells) →
organ (multiple tissue types) → organ system (multiple organs) → organismal
, (whole body). Cells are the basic living units; tissues are collections of similar
cells; organs are made of multiple tissue types working together.
Incorrect (A): Organ is more complex than tissue, not simpler.
Incorrect (C): Tissue comes before organ, not after.
Incorrect (D): Cell is simpler than tissue, not more complex.
Study Tip: "Levels of organization: Chemical → Cellular → Tissue → Organ →
Organ system → Organism."
Question 3
Body temperature is maintained around 37°C (98.6°F). If temperature rises,
mechanisms such as sweating and vasodilation are activated to cool the body.
This is an example of:
A) Positive feedback
B) Negative feedback
C) Homeostatic imbalance
D) Feedforward control
Correct Answer: B
Rationale:
Correct (B): Negative feedback reverses a change in a controlled variable,
bringing it back to set point. When body temperature rises above normal,
cooling mechanisms (sweating, vasodilation) are activated to lower
ANATOMY AND
PHYSIOLOGY 2ND
EDITION |
COMPLETE TEST
BANK |
LATEST 2025/2026
,UNIT 1: LEVELS OF ORGANIZATION
Chapter 1: An Introduction to the Human Body
Keywords
anatomy, physiology, gross anatomy, microscopic anatomy, levels of
organization, homeostasis, negative feedback, positive feedback, anatomical
position, directional terms, body cavities, serous membranes
Question 1
The study of the function of the body's structures is called:
A) Anatomy
B) Physiology
C) Histology
D) Cytology
Correct Answer: B
Rationale:
Correct (B): Physiology is the scientific study of the function of the body's
structures, focusing on how they work and interact to maintain life. Anatomy
,(A) is the study of structure; histology (C) is the study of tissues; cytology (D)
is the study of cells. Form (anatomy) and function (physiology) are
inseparable in living organisms.
Incorrect (A): Anatomy studies structure, not function.
Incorrect (C): Histology studies tissues under a microscope.
Incorrect (D): Cytology studies individual cells.
Study Tip: "Anatomy = structure (what it is). Physiology = function (what it
does)."
Question 2
Which of the following represents the correct order of structural organization
in the human body, from simplest to most complex?
A) Organ → Tissue → Cell → Organ system → Organism
B) Cell → Tissue → Organ → Organ system → Organism
C) Cell → Organ → Tissue → Organ system → Organism
D) Tissue → Cell → Organ → Organ system → Organism
Correct Answer: B
Rationale:
Correct (B): The hierarchy of structural organization is: chemical
(atoms/molecules) → cellular (cells) → tissue (groups of similar cells) →
organ (multiple tissue types) → organ system (multiple organs) → organismal
, (whole body). Cells are the basic living units; tissues are collections of similar
cells; organs are made of multiple tissue types working together.
Incorrect (A): Organ is more complex than tissue, not simpler.
Incorrect (C): Tissue comes before organ, not after.
Incorrect (D): Cell is simpler than tissue, not more complex.
Study Tip: "Levels of organization: Chemical → Cellular → Tissue → Organ →
Organ system → Organism."
Question 3
Body temperature is maintained around 37°C (98.6°F). If temperature rises,
mechanisms such as sweating and vasodilation are activated to cool the body.
This is an example of:
A) Positive feedback
B) Negative feedback
C) Homeostatic imbalance
D) Feedforward control
Correct Answer: B
Rationale:
Correct (B): Negative feedback reverses a change in a controlled variable,
bringing it back to set point. When body temperature rises above normal,
cooling mechanisms (sweating, vasodilation) are activated to lower
