BIOS 252 Comprehensive Exam Questions and Accurate
Answers 2026 | Chamberlain University | Latest Update |
Graded A+
1. Describe how synovial joints facilitate movement in the musculoskeletal
system compared to a classic lever system.
Synovial joints are primarily responsible for the stability of the
musculoskeletal system, unlike a classic lever system.
Synovial joints allow for a greater range of motion and flexibility,
enabling complex movements unlike the fixed nature of a classic
lever system.
Synovial joints are rigid and do not allow for movement, similar to a
classic lever system.
Synovial joints only allow for rotational movement, unlike a classic
lever system.
2. If a cell is observed under a microscope and the chromosomes are aligned at
the cell's equatorial plane, which stage of mitosis is occurring?
Anaphase
Telophase
Metaphase
Prophase
3. The reticular activating system (RAS) within the reticular formation is
responsible for:
Processing visual information
Maintaining alertness and consciousness
Controlling voluntary muscle movements
, Regulating body temperature
4. Which type of synapse involves the secretion of a neurotransmitter across the
synapse to stimulate the post-synaptic cell?
Chemical
Nominal
Mechanical
Electrotonic
Processing
5. Which of the following is NOT a function of smooth muscle?
Pumping of the blood through the heart
Causing "goose bumps" in response to cold temperature or fear
Changing the size of the pupil when the lighting conditions change
Causing the movements associated with airflow
6. What term describes the process of counteracting a change in homeostasis?
Negative feedback
Adaptation
Positive feedback
Homeostasis
7. Which function is commonly associated with the plasma membrane of a
human cell?
Physical isolation
, Protein synthesis
Cellular respiration
Regulation of exchange with the environment
8. In a clinical setting, if a surgeon needs to access the abdominal organs, which
plane would they likely reference for their approach?
Transverse plane
Frontal plane
Coronal plane
Sagittal plane
9. Two postsynaptic potentials impact a neuron at the same time but in different
synapses. This is an example of what type of summation?
Spatial
Fractional
Ordinal
Temporal
10. Describe what happens to the reactants AB and CD during the chemical
reaction AB + CD —> AD + CB.
The reactants remain unchanged and are simply listed as products.
The reactants combine to form a new single product.
The reactants are destroyed and no products are formed.
The reactants AB and CD undergo a rearrangement to form the
products AD and CB.
, 11. Which is true about the transverse tubule system of skeletal muscle?
The ryanodine receptor is located in the membrane of the T-tubule
The dihydropyridine receptor binding opens Ca++ channels in the T-
tubule membrane
T-tubules store high concentrations of calcium
T-tubules are an extension of the muscle cell's sarcolemma
12. Describe the significance of the transverse plane in anatomical studies.
The transverse plane is primarily used for muscle contraction studies.
The transverse plane is significant as it allows for the examination
of the body in cross-sections, facilitating the understanding of
internal structures.
The transverse plane separates the body into left and right halves.
The transverse plane is used to measure body temperature.
13. Describe the role of the internal intercostal muscles in the process of forced
exhalation.
The internal intercostal muscles relax to allow the diaphragm to
expand the thoracic cavity.
The internal intercostal muscles assist in inhalation by lifting the ribs.
The internal intercostal muscles contract to pull the ribs downward,
reducing the thoracic cavity volume and aiding in forced
exhalation.
The internal intercostal muscles stabilize the spine during breathing.
Answers 2026 | Chamberlain University | Latest Update |
Graded A+
1. Describe how synovial joints facilitate movement in the musculoskeletal
system compared to a classic lever system.
Synovial joints are primarily responsible for the stability of the
musculoskeletal system, unlike a classic lever system.
Synovial joints allow for a greater range of motion and flexibility,
enabling complex movements unlike the fixed nature of a classic
lever system.
Synovial joints are rigid and do not allow for movement, similar to a
classic lever system.
Synovial joints only allow for rotational movement, unlike a classic
lever system.
2. If a cell is observed under a microscope and the chromosomes are aligned at
the cell's equatorial plane, which stage of mitosis is occurring?
Anaphase
Telophase
Metaphase
Prophase
3. The reticular activating system (RAS) within the reticular formation is
responsible for:
Processing visual information
Maintaining alertness and consciousness
Controlling voluntary muscle movements
, Regulating body temperature
4. Which type of synapse involves the secretion of a neurotransmitter across the
synapse to stimulate the post-synaptic cell?
Chemical
Nominal
Mechanical
Electrotonic
Processing
5. Which of the following is NOT a function of smooth muscle?
Pumping of the blood through the heart
Causing "goose bumps" in response to cold temperature or fear
Changing the size of the pupil when the lighting conditions change
Causing the movements associated with airflow
6. What term describes the process of counteracting a change in homeostasis?
Negative feedback
Adaptation
Positive feedback
Homeostasis
7. Which function is commonly associated with the plasma membrane of a
human cell?
Physical isolation
, Protein synthesis
Cellular respiration
Regulation of exchange with the environment
8. In a clinical setting, if a surgeon needs to access the abdominal organs, which
plane would they likely reference for their approach?
Transverse plane
Frontal plane
Coronal plane
Sagittal plane
9. Two postsynaptic potentials impact a neuron at the same time but in different
synapses. This is an example of what type of summation?
Spatial
Fractional
Ordinal
Temporal
10. Describe what happens to the reactants AB and CD during the chemical
reaction AB + CD —> AD + CB.
The reactants remain unchanged and are simply listed as products.
The reactants combine to form a new single product.
The reactants are destroyed and no products are formed.
The reactants AB and CD undergo a rearrangement to form the
products AD and CB.
, 11. Which is true about the transverse tubule system of skeletal muscle?
The ryanodine receptor is located in the membrane of the T-tubule
The dihydropyridine receptor binding opens Ca++ channels in the T-
tubule membrane
T-tubules store high concentrations of calcium
T-tubules are an extension of the muscle cell's sarcolemma
12. Describe the significance of the transverse plane in anatomical studies.
The transverse plane is primarily used for muscle contraction studies.
The transverse plane is significant as it allows for the examination
of the body in cross-sections, facilitating the understanding of
internal structures.
The transverse plane separates the body into left and right halves.
The transverse plane is used to measure body temperature.
13. Describe the role of the internal intercostal muscles in the process of forced
exhalation.
The internal intercostal muscles relax to allow the diaphragm to
expand the thoracic cavity.
The internal intercostal muscles assist in inhalation by lifting the ribs.
The internal intercostal muscles contract to pull the ribs downward,
reducing the thoracic cavity volume and aiding in forced
exhalation.
The internal intercostal muscles stabilize the spine during breathing.
