WGU D312 ANATOMY AND PHYSIOLOGY 1 WITH LAB OBJECTIVE
ASSESSMENT (OA) ACTUAL EXAM 2026 COMPLETE 200 ACCURATE
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED SOLUTIONS) A
NEW UPDATED VERSION |GUARANTEED PASS A+ (FULL REVISED EXAM)
WGU D312 BEST DOCUMENT FOR FINAL EXAM 2026-2027
What quadrant includes the left lobe of the liver, stomach, pancreas,
and portions of the small and large intestines?
ANSWERS: Left upper quadrant (LUQ)
Which part of the plasma membrane binds a specific molecule
outside the cell?
ANSWERS:
Receptor
A receptor is a type of recognition protein that can selectively
bind a specific molecule outside the cell, and this binding induces
a chemical reaction within the cell.
What does it mean if an anatomical structure is caudal?
ANSWERS:
If an anatomical structure is described as caudal, it means it is
located towards the tail or lower part of the body. In humans, this
typically refers to a position closer to the feet or the lower end of
the spine.
For example, the legs are caudal to the arms, meaning they are
situated lower on the body compared to the arms.
,What is the role of an effector in a negative feedback system?
ANSWERS: In a negative feedback system, the effector plays a crucial
role in
maintaining homeostasis by carrying out the response to a stimulus.
Here's how it works:
Detection: A receptor detects a change in a physiological variable (e.g.,
temperature, blood sugar levels).
Signal Processing: The control center (often the brain or endocrine
glands) processes this information and determines the appropriate
response.
Action: The effector enacts the response to counteract the initial
change and bring the variable back to its set point.
For example, if your body temperature drops, the effector (such as
muscles shivering) generates heat to raise your body temperature
back to normal.
Which thigh muscle is situated below the adductor longus?
ANSWERS: The muscle situated below the adductor longus is the
adductor magnus. This muscle is a large, triangular muscle located
in the medial compartment of the thigh and plays a significant role
in adducting and medially rotating the thigh
,What is the role of oligodendrocytes?
ANSWERS: Oligodendrocytes play a crucial role in the central nervous
system (CNS) by producing the myelin sheath that insulates axons.
This myelination is
essential for the efficient transmission of electrical impulses along
nerve fibers, which helps in the rapid and coordinated
communication between neurons. Additionally, oligodendrocytes
provide metabolic support to
neurons and contribute to maintaining a stable microenvironment
within the CNS.
Which membrane channel is able to open due to a physical
distortion?
ANSWERS: The membrane channel that opens due to physical
distortion is the mechanically gated channel. These channels
respond to mechanical
changes such as stretch, pressure, or vibration and are crucial in
sensory processes like touch and hearing.
Which nerve controls the lifting of the upper eyelid?
ANSWERS: The nerve responsible for controlling the lifting of the
upper eyelid is the oculomotor nerve (cranial nerve III). It
innervates the levator palpebrae superioris muscle, which is
essential for elevating the upper eyelid.
, Which hormones are secreted from the posterior pituitary gland?
ANSWERS: The posterior pituitary gland secretes two main hormones:
oxytocin and antidiuretic hormone (ADH), also known as
vasopressin.
Oxytocin plays a crucial role in childbirth and lactation, stimulating
uterine contractions and milk ejection.
Antidiuretic hormone (ADH) helps regulate water balance in the
body by increasing water reabsorption in the kidneys.
Which endocrine gland secretes glucagon?
ANSWERS: Glucagon is secreted by the pancreas. Specifically, it is
produced by the alpha cells in the islets of Langerhans within the
pancreas.
Glucagon plays a crucial role in regulating blood sugar levels by
promoting the conversion of stored glycogen in the liver into
glucose, which is then
released into the bloodstream.
ASSESSMENT (OA) ACTUAL EXAM 2026 COMPLETE 200 ACCURATE
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED SOLUTIONS) A
NEW UPDATED VERSION |GUARANTEED PASS A+ (FULL REVISED EXAM)
WGU D312 BEST DOCUMENT FOR FINAL EXAM 2026-2027
What quadrant includes the left lobe of the liver, stomach, pancreas,
and portions of the small and large intestines?
ANSWERS: Left upper quadrant (LUQ)
Which part of the plasma membrane binds a specific molecule
outside the cell?
ANSWERS:
Receptor
A receptor is a type of recognition protein that can selectively
bind a specific molecule outside the cell, and this binding induces
a chemical reaction within the cell.
What does it mean if an anatomical structure is caudal?
ANSWERS:
If an anatomical structure is described as caudal, it means it is
located towards the tail or lower part of the body. In humans, this
typically refers to a position closer to the feet or the lower end of
the spine.
For example, the legs are caudal to the arms, meaning they are
situated lower on the body compared to the arms.
,What is the role of an effector in a negative feedback system?
ANSWERS: In a negative feedback system, the effector plays a crucial
role in
maintaining homeostasis by carrying out the response to a stimulus.
Here's how it works:
Detection: A receptor detects a change in a physiological variable (e.g.,
temperature, blood sugar levels).
Signal Processing: The control center (often the brain or endocrine
glands) processes this information and determines the appropriate
response.
Action: The effector enacts the response to counteract the initial
change and bring the variable back to its set point.
For example, if your body temperature drops, the effector (such as
muscles shivering) generates heat to raise your body temperature
back to normal.
Which thigh muscle is situated below the adductor longus?
ANSWERS: The muscle situated below the adductor longus is the
adductor magnus. This muscle is a large, triangular muscle located
in the medial compartment of the thigh and plays a significant role
in adducting and medially rotating the thigh
,What is the role of oligodendrocytes?
ANSWERS: Oligodendrocytes play a crucial role in the central nervous
system (CNS) by producing the myelin sheath that insulates axons.
This myelination is
essential for the efficient transmission of electrical impulses along
nerve fibers, which helps in the rapid and coordinated
communication between neurons. Additionally, oligodendrocytes
provide metabolic support to
neurons and contribute to maintaining a stable microenvironment
within the CNS.
Which membrane channel is able to open due to a physical
distortion?
ANSWERS: The membrane channel that opens due to physical
distortion is the mechanically gated channel. These channels
respond to mechanical
changes such as stretch, pressure, or vibration and are crucial in
sensory processes like touch and hearing.
Which nerve controls the lifting of the upper eyelid?
ANSWERS: The nerve responsible for controlling the lifting of the
upper eyelid is the oculomotor nerve (cranial nerve III). It
innervates the levator palpebrae superioris muscle, which is
essential for elevating the upper eyelid.
, Which hormones are secreted from the posterior pituitary gland?
ANSWERS: The posterior pituitary gland secretes two main hormones:
oxytocin and antidiuretic hormone (ADH), also known as
vasopressin.
Oxytocin plays a crucial role in childbirth and lactation, stimulating
uterine contractions and milk ejection.
Antidiuretic hormone (ADH) helps regulate water balance in the
body by increasing water reabsorption in the kidneys.
Which endocrine gland secretes glucagon?
ANSWERS: Glucagon is secreted by the pancreas. Specifically, it is
produced by the alpha cells in the islets of Langerhans within the
pancreas.
Glucagon plays a crucial role in regulating blood sugar levels by
promoting the conversion of stored glycogen in the liver into
glucose, which is then
released into the bloodstream.
