WGU D312 Anatomy and Physiology I with Lab
OA Practice Exam QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
Which of the following is the correct order of organization in the human body,
from simplest to most complex?
a) Organ, tissue, cell, molecule, organ system
b) Atom, molecule, cell, tissue, organ, organ system, organism
c) Cell, molecule, organ system, organ, tissue
d) Tissue, cell, molecule, atom, organ - ANSWER---b) Atom, molecule, cell, tissue,
organ, organ system, organism
Which organ system is responsible for transporting gases, nutrients, and waste
throughout the body?
a) Nervous system
b) Endocrine system
c) Circulatory system
d) Digestive system - ANSWER---c) Circulatory system
The sum of all chemical reactions in the body is called:
a) Homeostasis
b) Catabolism
c) Metabolism
d) Anabolism - ANSWER---c) Metabolism
, WGU D312 Anatomy and Physiology I with Lab
OA Practice Exam QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
Which of the following best defines anatomy?
a) The study of how body parts function
b) The study of the structure and relationships of body parts
c) The study of disease processes
d) The study of chemical interactions within the body - ANSWER---b) The study of
the structure and relationships of body parts (anatomy in Greek: 'to cut up')
Which branch of science deals with the functions of body parts?
a) Anatomy
b) Physiology
c) Histology
d) Pathology - ANSWER---b) Physiology
Which term describes the body's ability to maintain a stable internal
environment?
a) Homeostasis
b) Metabolism
c) Adaptation
d) Equilibrium - ANSWER---a) Homeostasis
, WGU D312 Anatomy and Physiology I with Lab
OA Practice Exam QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
Which of the following body systems is primarily responsible for detecting and
responding to stimuli?
a) Endocrine system
b) Nervous system
c) Respiratory system
d) Digestive system - ANSWER---b) Nervous system
The term "superior" refers to a body part that is:
a) Toward the front
b) Above another part
c) Below another part
d) Toward the midline - ANSWER---b) Above another part
- Inferior: below another part
- Medial: toward the midline
- Anterior/ventral: toward the front
Which plane divides the body into right and left halves?
a) Transverse
b) Coronal
c) Sagittal
OA Practice Exam QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
Which of the following is the correct order of organization in the human body,
from simplest to most complex?
a) Organ, tissue, cell, molecule, organ system
b) Atom, molecule, cell, tissue, organ, organ system, organism
c) Cell, molecule, organ system, organ, tissue
d) Tissue, cell, molecule, atom, organ - ANSWER---b) Atom, molecule, cell, tissue,
organ, organ system, organism
Which organ system is responsible for transporting gases, nutrients, and waste
throughout the body?
a) Nervous system
b) Endocrine system
c) Circulatory system
d) Digestive system - ANSWER---c) Circulatory system
The sum of all chemical reactions in the body is called:
a) Homeostasis
b) Catabolism
c) Metabolism
d) Anabolism - ANSWER---c) Metabolism
, WGU D312 Anatomy and Physiology I with Lab
OA Practice Exam QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
Which of the following best defines anatomy?
a) The study of how body parts function
b) The study of the structure and relationships of body parts
c) The study of disease processes
d) The study of chemical interactions within the body - ANSWER---b) The study of
the structure and relationships of body parts (anatomy in Greek: 'to cut up')
Which branch of science deals with the functions of body parts?
a) Anatomy
b) Physiology
c) Histology
d) Pathology - ANSWER---b) Physiology
Which term describes the body's ability to maintain a stable internal
environment?
a) Homeostasis
b) Metabolism
c) Adaptation
d) Equilibrium - ANSWER---a) Homeostasis
, WGU D312 Anatomy and Physiology I with Lab
OA Practice Exam QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
Which of the following body systems is primarily responsible for detecting and
responding to stimuli?
a) Endocrine system
b) Nervous system
c) Respiratory system
d) Digestive system - ANSWER---b) Nervous system
The term "superior" refers to a body part that is:
a) Toward the front
b) Above another part
c) Below another part
d) Toward the midline - ANSWER---b) Above another part
- Inferior: below another part
- Medial: toward the midline
- Anterior/ventral: toward the front
Which plane divides the body into right and left halves?
a) Transverse
b) Coronal
c) Sagittal
