BIOL251 Human Anatomy & Physiology –
Human Anatomy & Physiology Lecture Notes
and Exam Review Practice Exam 2026/2027
Practice Questions & Study Guide | Complete
Exam-Style Questions with Correct Detailed
Answers & Rationales (Reliable Answers) |
Latest Updated Version | Instant Download
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Question 1
Which statement best describes the relationship between
anatomy and physiology?
A. Anatomy focuses exclusively on microscopic structures, while
physiology focuses on macroscopic structures.
B. Anatomy examines body structure, while physiology
examines how body structures function.
C. Anatomy explains disease processes, while physiology
explains normal body structures.
D. Anatomy and physiology are independent disciplines with
little relationship.
,Answer: B. Anatomy examines body structure, while
physiology examines how body structures function.
Rationale: Anatomy is the study of body structures and their
relationships, whereas physiology is the study of how those
structures function. The two disciplines are closely
interconnected because structure frequently determines
function. For example, the thin walls and extensive surface area
of pulmonary alveoli are structural characteristics that facilitate
efficient gas exchange. Understanding normal anatomy
therefore provides an essential foundation for understanding
normal physiological processes.
Question 2
A patient develops a decrease in blood calcium concentration.
Which hormone would normally be released to help restore
calcium levels toward the normal range?
A. Insulin
B. Calcitonin
C. Parathyroid hormone
D. Aldosterone
Answer: C. Parathyroid hormone
Rationale: Parathyroid hormone, or PTH, is released by the
parathyroid glands when blood calcium levels fall. PTH raises
,blood calcium by increasing calcium reabsorption by the
kidneys, promoting activation of vitamin D, and indirectly
increasing intestinal calcium absorption. It also promotes bone
resorption when necessary. Calcitonin generally has an
opposing effect by lowering blood calcium, while insulin and
aldosterone primarily regulate glucose metabolism and
sodium/potassium balance, respectively.
Question 3
Which level of organization is represented by a group of similar
cells working together to perform a common function?
A. Chemical level
B. Tissue level
C. Organ level
D. Organ-system level
Answer: B. Tissue level
Rationale: The tissue level of organization consists of groups of
structurally similar cells that work together to perform specific
functions. The four major tissue types are epithelial, connective,
muscle, and nervous tissue. An organ contains at least two
tissue types working together, while an organ system consists of
multiple organs coordinating their activities. The tissue level
, therefore falls between the cellular and organ levels of
organization.
Question 4
Which anatomical plane divides the body into anterior and
posterior portions?
A. Sagittal plane
B. Transverse plane
C. Frontal plane
D. Median plane
Answer: C. Frontal plane
Rationale: A frontal, or coronal, plane divides the body into
anterior and posterior portions. A sagittal plane divides the
body into left and right portions, while a midsagittal plane
divides the body into equal left and right halves. A transverse
plane divides the body into superior and inferior portions.
Correct identification of anatomical planes is essential when
describing locations and interpreting medical imaging.
Question 5
Which organelle is primarily responsible for producing most of
the ATP used by a typical human cell?
Human Anatomy & Physiology Lecture Notes
and Exam Review Practice Exam 2026/2027
Practice Questions & Study Guide | Complete
Exam-Style Questions with Correct Detailed
Answers & Rationales (Reliable Answers) |
Latest Updated Version | Instant Download
Question 1
Which statement best describes the relationship between
anatomy and physiology?
A. Anatomy focuses exclusively on microscopic structures, while
physiology focuses on macroscopic structures.
B. Anatomy examines body structure, while physiology
examines how body structures function.
C. Anatomy explains disease processes, while physiology
explains normal body structures.
D. Anatomy and physiology are independent disciplines with
little relationship.
,Answer: B. Anatomy examines body structure, while
physiology examines how body structures function.
Rationale: Anatomy is the study of body structures and their
relationships, whereas physiology is the study of how those
structures function. The two disciplines are closely
interconnected because structure frequently determines
function. For example, the thin walls and extensive surface area
of pulmonary alveoli are structural characteristics that facilitate
efficient gas exchange. Understanding normal anatomy
therefore provides an essential foundation for understanding
normal physiological processes.
Question 2
A patient develops a decrease in blood calcium concentration.
Which hormone would normally be released to help restore
calcium levels toward the normal range?
A. Insulin
B. Calcitonin
C. Parathyroid hormone
D. Aldosterone
Answer: C. Parathyroid hormone
Rationale: Parathyroid hormone, or PTH, is released by the
parathyroid glands when blood calcium levels fall. PTH raises
,blood calcium by increasing calcium reabsorption by the
kidneys, promoting activation of vitamin D, and indirectly
increasing intestinal calcium absorption. It also promotes bone
resorption when necessary. Calcitonin generally has an
opposing effect by lowering blood calcium, while insulin and
aldosterone primarily regulate glucose metabolism and
sodium/potassium balance, respectively.
Question 3
Which level of organization is represented by a group of similar
cells working together to perform a common function?
A. Chemical level
B. Tissue level
C. Organ level
D. Organ-system level
Answer: B. Tissue level
Rationale: The tissue level of organization consists of groups of
structurally similar cells that work together to perform specific
functions. The four major tissue types are epithelial, connective,
muscle, and nervous tissue. An organ contains at least two
tissue types working together, while an organ system consists of
multiple organs coordinating their activities. The tissue level
, therefore falls between the cellular and organ levels of
organization.
Question 4
Which anatomical plane divides the body into anterior and
posterior portions?
A. Sagittal plane
B. Transverse plane
C. Frontal plane
D. Median plane
Answer: C. Frontal plane
Rationale: A frontal, or coronal, plane divides the body into
anterior and posterior portions. A sagittal plane divides the
body into left and right portions, while a midsagittal plane
divides the body into equal left and right halves. A transverse
plane divides the body into superior and inferior portions.
Correct identification of anatomical planes is essential when
describing locations and interpreting medical imaging.
Question 5
Which organelle is primarily responsible for producing most of
the ATP used by a typical human cell?
