D312 - ANATOMY & PHYSIOLOGY I FINAL
EXAM 2025 NEWEST COMPLETE
50+QUESTIONS WITH DETAILED VERIFIED
ANSWERS 100%CORRECT
What quadrant includes the left lobe of the liver, stomach, pancreas, and portions of the small and large
intestines? - answer ✔✔-Left upper quadrant (LUQ)
Which part of the plasma membrane binds a specific molecule outside the cell? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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.
What is the correct order of the epidermis layer arranged from deep to superficial? - answer ✔✔-1.
Stratum basale (or stratum germinativum)
,2. Stratum spinosum
3. Stratum granulosum
4. Stratum lucidum (only present in thick skin, such as the palms and soles)
5. Stratum corneum
Which skin layer contains Langerhans cells? - answer ✔✔-Langerhans cells are primarily found in the
stratum spinosum layer of the epidermis. These cells play a key role in the skin's immune defense by
acting as antigen-presenting cells, which help detect and fight pathogens.
Which degree of burn affects the underlying bones and muscles? - answer ✔✔-Fourth-degree burns are
the most severe and affect not only all layers of the skin but also the underlying bones, muscles, and
tendons. These burns often appear charred or white and are typically painless because the nerve
endings are destroyed.
Which part of the long bone has an epiphyseal line? - answer ✔✔-The epiphyseal line is located at the
junction between the diaphysis (the shaft or central part of the bone) and the epiphysis (the end part of
the bone) in long bones. This line is a remnant of the epiphyseal plate (growth plate) and indicates that
the bone has completed its growth in length.
Which suture is present between the left and right parietal lobes? - answer ✔✔-The suture present
between the left and right parietal lobes is the sagittal suture. This suture runs along the midline of the
skull, connecting the two parietal bones.
Which two bones form the pectoral girdle? - answer ✔✔-The pectoral girdle, also known as the
shoulder girdle, is formed by two bones: the clavicle (collarbone) and the scapula (shoulder blade).
These bones work together to connect the upper limb to the axial skeleton and provide a wide range of
motion for the shoulder and arm.
What are the periodic invaginations in sarcolemma called? - answer ✔✔-The periodic invaginations in
the sarcolemma are called T-tubules (transverse tubules). These structures play a crucial role in
conducting electrical impulses from the surface of the muscle fiber to its interior, ensuring that the
muscle contracts efficiently and uniformly.
Which medially placed group of muscles is part of the erector spinae? - answer ✔✔-The spinalis muscles
are the most medially placed group within the erector spinae muscle group. These muscles are located
, closest to the spine and are responsible for extending and laterally flexing the cervical and thoracic
regions of the spine.
Which thigh muscle is situated below the adductor longus? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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.
EXAM 2025 NEWEST COMPLETE
50+QUESTIONS WITH DETAILED VERIFIED
ANSWERS 100%CORRECT
What quadrant includes the left lobe of the liver, stomach, pancreas, and portions of the small and large
intestines? - answer ✔✔-Left upper quadrant (LUQ)
Which part of the plasma membrane binds a specific molecule outside the cell? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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.
What is the correct order of the epidermis layer arranged from deep to superficial? - answer ✔✔-1.
Stratum basale (or stratum germinativum)
,2. Stratum spinosum
3. Stratum granulosum
4. Stratum lucidum (only present in thick skin, such as the palms and soles)
5. Stratum corneum
Which skin layer contains Langerhans cells? - answer ✔✔-Langerhans cells are primarily found in the
stratum spinosum layer of the epidermis. These cells play a key role in the skin's immune defense by
acting as antigen-presenting cells, which help detect and fight pathogens.
Which degree of burn affects the underlying bones and muscles? - answer ✔✔-Fourth-degree burns are
the most severe and affect not only all layers of the skin but also the underlying bones, muscles, and
tendons. These burns often appear charred or white and are typically painless because the nerve
endings are destroyed.
Which part of the long bone has an epiphyseal line? - answer ✔✔-The epiphyseal line is located at the
junction between the diaphysis (the shaft or central part of the bone) and the epiphysis (the end part of
the bone) in long bones. This line is a remnant of the epiphyseal plate (growth plate) and indicates that
the bone has completed its growth in length.
Which suture is present between the left and right parietal lobes? - answer ✔✔-The suture present
between the left and right parietal lobes is the sagittal suture. This suture runs along the midline of the
skull, connecting the two parietal bones.
Which two bones form the pectoral girdle? - answer ✔✔-The pectoral girdle, also known as the
shoulder girdle, is formed by two bones: the clavicle (collarbone) and the scapula (shoulder blade).
These bones work together to connect the upper limb to the axial skeleton and provide a wide range of
motion for the shoulder and arm.
What are the periodic invaginations in sarcolemma called? - answer ✔✔-The periodic invaginations in
the sarcolemma are called T-tubules (transverse tubules). These structures play a crucial role in
conducting electrical impulses from the surface of the muscle fiber to its interior, ensuring that the
muscle contracts efficiently and uniformly.
Which medially placed group of muscles is part of the erector spinae? - answer ✔✔-The spinalis muscles
are the most medially placed group within the erector spinae muscle group. These muscles are located
, closest to the spine and are responsible for extending and laterally flexing the cervical and thoracic
regions of the spine.
Which thigh muscle is situated below the adductor longus? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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? - answer ✔✔-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.
