WGU D312 Anatomy & Physiology I OA Actual Exam 2026/2027 – Complete 287
Questions with Detailed Rationales | 100% Verified | Pass Guaranteed – A+
Graded
SECTION A: Introduction to Anatomy & Physiology – Levels of
Organization, Homeostasis, & Terminology (27 Questions)
Q1: A nurse is examining a patient and notes the location of a scar on the anterior
surface of the right leg. Which pair of directional terms correctly describes the scar's
position relative to the calf muscle?
A. Superior and medial
B. Posterior and proximal
C. Anterior and superficial [CORRECT]
D. Deep and lateral
Correct Answer: C
Rationale: Anterior means toward the front of the body, and superficial means closer to
the surface. A scar on the front of the leg is anterior and superficial relative to deeper
calf muscles. Posterior refers to the back, proximal refers to closer to the trunk, and
deep means farther from the surface.
,Q2: A healthcare provider is studying how the kidneys regulate blood pH and water
balance. This study focuses on which branch of science?
A. Anatomy, because it examines kidney structure
B. Physiology, because it examines kidney function [CORRECT]
C. Histology, because it examines kidney tissue
D. Pathology, because it examines kidney disease
Correct Answer: B
Rationale: Physiology is the study of how body structures function. Examining how
kidneys regulate pH and water balance focuses on function, not structure (anatomy),
tissue composition (histology), or disease (pathology).
Q3: During a homeostatic response to elevated blood glucose, the pancreas releases
insulin, which lowers blood glucose back to normal. This is an example of:
A. Positive feedback, because the response amplifies the change
B. Negative feedback, because the response reverses the initial stimulus [CORRECT]
,C. Neural stimulation, because the brain directly controls the pancreas
D. Humoral regulation, because glucose is a hormone
Correct Answer: B
Rationale: Negative feedback mechanisms reverse the direction of the initial stimulus to
maintain homeostasis. Insulin lowers elevated blood glucose back toward the set point.
Positive feedback amplifies changes, neural stimulation is not the primary mechanism
here, and glucose is a nutrient, not a hormone.
Q4: A student is identifying the correct anatomical position. In this standard reference
position, the palms are facing:
A. Posteriorly, against the thighs
B. Medially, toward the midline
C. Anteriorly, facing forward [CORRECT]
D. Inferiorly, toward the floor
Correct Answer: C
, Rationale: The anatomical position requires the body to be erect, feet slightly apart,
arms at the sides with palms facing anteriorly (forward). This standardizes directional
terminology regardless of the body's actual position.
Q5: A surgical incision is made through the wall of the abdominopelvic cavity. The
surgeon must cut through which membrane layers?
A. Pleura and pericardium
B. Meninges and synovial membrane
C. Peritoneum and associated serous membranes [CORRECT]
D. Cutaneous and mucous membranes
Correct Answer: C
Rationale: The abdominopelvic cavity is lined by the peritoneum, a serous membrane.
Pleura lines the thoracic cavity, pericardium surrounds the heart, meninges surround the
CNS, synovial lines joints, cutaneous is skin, and mucous lines tracts open to the
exterior.
Q6: The simplest level of structural organization that exhibits all the characteristics of
life is the:
Questions with Detailed Rationales | 100% Verified | Pass Guaranteed – A+
Graded
SECTION A: Introduction to Anatomy & Physiology – Levels of
Organization, Homeostasis, & Terminology (27 Questions)
Q1: A nurse is examining a patient and notes the location of a scar on the anterior
surface of the right leg. Which pair of directional terms correctly describes the scar's
position relative to the calf muscle?
A. Superior and medial
B. Posterior and proximal
C. Anterior and superficial [CORRECT]
D. Deep and lateral
Correct Answer: C
Rationale: Anterior means toward the front of the body, and superficial means closer to
the surface. A scar on the front of the leg is anterior and superficial relative to deeper
calf muscles. Posterior refers to the back, proximal refers to closer to the trunk, and
deep means farther from the surface.
,Q2: A healthcare provider is studying how the kidneys regulate blood pH and water
balance. This study focuses on which branch of science?
A. Anatomy, because it examines kidney structure
B. Physiology, because it examines kidney function [CORRECT]
C. Histology, because it examines kidney tissue
D. Pathology, because it examines kidney disease
Correct Answer: B
Rationale: Physiology is the study of how body structures function. Examining how
kidneys regulate pH and water balance focuses on function, not structure (anatomy),
tissue composition (histology), or disease (pathology).
Q3: During a homeostatic response to elevated blood glucose, the pancreas releases
insulin, which lowers blood glucose back to normal. This is an example of:
A. Positive feedback, because the response amplifies the change
B. Negative feedback, because the response reverses the initial stimulus [CORRECT]
,C. Neural stimulation, because the brain directly controls the pancreas
D. Humoral regulation, because glucose is a hormone
Correct Answer: B
Rationale: Negative feedback mechanisms reverse the direction of the initial stimulus to
maintain homeostasis. Insulin lowers elevated blood glucose back toward the set point.
Positive feedback amplifies changes, neural stimulation is not the primary mechanism
here, and glucose is a nutrient, not a hormone.
Q4: A student is identifying the correct anatomical position. In this standard reference
position, the palms are facing:
A. Posteriorly, against the thighs
B. Medially, toward the midline
C. Anteriorly, facing forward [CORRECT]
D. Inferiorly, toward the floor
Correct Answer: C
, Rationale: The anatomical position requires the body to be erect, feet slightly apart,
arms at the sides with palms facing anteriorly (forward). This standardizes directional
terminology regardless of the body's actual position.
Q5: A surgical incision is made through the wall of the abdominopelvic cavity. The
surgeon must cut through which membrane layers?
A. Pleura and pericardium
B. Meninges and synovial membrane
C. Peritoneum and associated serous membranes [CORRECT]
D. Cutaneous and mucous membranes
Correct Answer: C
Rationale: The abdominopelvic cavity is lined by the peritoneum, a serous membrane.
Pleura lines the thoracic cavity, pericardium surrounds the heart, meninges surround the
CNS, synovial lines joints, cutaneous is skin, and mucous lines tracts open to the
exterior.
Q6: The simplest level of structural organization that exhibits all the characteristics of
life is the:
