BIOL 251 Human Anatomy & Physiology I w/Lab | Module
1 Exam Review 2026/2027 | Questions with Verified Answers
& Detailed Rationales | Portage Learning
CRUSH YOUR BIOL 251 MODULE 1 EXAM! 150+ exam-style MCQs covering homeostasis,
anatomical terms, body planes, cavities, cell transport, organelles, and all 4 tissue types. Each
question mirrors the actual Lockdown Browser format with correct answers in BOLD and clear
Rationales explaining why each answer is right and the others are wrong. No memorization —
just true mastery! Perfect for pre-nursing, pre-med, and allied health students. Aligned with
Portage Learning and Geneva College curriculum. Written by students who passed wit h A+
grades. Stop stressing and start passing! Download now and walk in with total confidence!
,1. What is the study of the structure of body parts and their relationships to one another?
A) Physiology
B) Histology
C) Anatomy
D) Cytology
Rationale: Anatomy is the study of structure, while physiology is the study of function.
2. Which level of structural organization is the simplest?
A) Tissue
B) Organ
C) Cellular
D) Chemical
Rationale: The chemical level (atoms and molecules) is the most basic, followed by cellular,
tissue, organ, organ system, and organism.
3. The heart is an example of which level of structural organization?
A) Tissue
B) Organ system
C) Organ
D) Cellular
Rationale: An organ is composed of two or more tissue types working together for a common
function, such as the heart.
4. Which of the following represents the correct order from simplest to most complex?
A) Organ → Tissue → Cell → Organism
B) Cell → Organ → Tissue → Organ system
C) Tissue → Cell → Organ → Organism
D) Cell → Tissue → Organ → Organ system → Organism
Rationale: The hierarchy is chemical → cellular → tissue → organ → organ system → organism.
,5. The principle of complementarity states that:
A) Structure is unrelated to function
B) Function determines structure only
C) Structure determines function
D) Organs work independently
Rationale: Complementarity means that anatomy (structure) and physiology (function) are
inseparable; structure dictates what functions are possible.
6. What is the maintenance of a relatively stable internal environment called?
A) Metabolism
B) Homeostasis
C) Anabolism
D) Catabolism
Rationale: Homeostasis is the body's ability to maintain stable internal conditions despite
external changes.
7. Which type of feedback reverses a change to return the body to its set point?
A) Positive feedback
B) Negative feedback
C) Feed-forward control
D) Homeostatic imbalance
Rationale: Negative feedback opposes the initial stimulus, while positive feedback amplifies it.
8. Which of the following is an example of negative feedback?
A) Blood clotting
B) Childbirth contractions
C) Regulation of blood glucose by insulin
D) Lactation
Rationale: Insulin lowers high blood glucose, reversing the initial change, which is classic
negative feedback.
, 9. Which type of feedback is typically involved in processes that push the body further from
homeostasis?
A) Negative feedback
B) Positive feedback
C) Neutral feedback
D) Inhibitory feedback
Rationale: Positive feedback amplifies the stimulus and moves the system away from the set
point until an endpoint is reached.
10. The release of oxytocin during labor to intensify uterine contractions is an example of:
A) Negative feedback
B) Positive feedback
C) Homeostatic regulation
D) Thermoregulation
Rationale: Oxytocin causes stronger contractions, which stimulate even more oxytocin release,
amplifying the process.
11. Which plane divides the body into superior and inferior parts?
A) Sagittal
B) Frontal
C) Transverse
D) Midsagittal
Rationale: A transverse (horizontal) plane cuts the body into upper and lower sections.
12. The frontal (coronal) plane divides the body into:
A) Left and right
B) Anterior and posterior
C) Superior and inferior
D) Proximal and distal
Rationale: The coronal plane separates the front (anterior) from the back (posterior).
1 Exam Review 2026/2027 | Questions with Verified Answers
& Detailed Rationales | Portage Learning
CRUSH YOUR BIOL 251 MODULE 1 EXAM! 150+ exam-style MCQs covering homeostasis,
anatomical terms, body planes, cavities, cell transport, organelles, and all 4 tissue types. Each
question mirrors the actual Lockdown Browser format with correct answers in BOLD and clear
Rationales explaining why each answer is right and the others are wrong. No memorization —
just true mastery! Perfect for pre-nursing, pre-med, and allied health students. Aligned with
Portage Learning and Geneva College curriculum. Written by students who passed wit h A+
grades. Stop stressing and start passing! Download now and walk in with total confidence!
,1. What is the study of the structure of body parts and their relationships to one another?
A) Physiology
B) Histology
C) Anatomy
D) Cytology
Rationale: Anatomy is the study of structure, while physiology is the study of function.
2. Which level of structural organization is the simplest?
A) Tissue
B) Organ
C) Cellular
D) Chemical
Rationale: The chemical level (atoms and molecules) is the most basic, followed by cellular,
tissue, organ, organ system, and organism.
3. The heart is an example of which level of structural organization?
A) Tissue
B) Organ system
C) Organ
D) Cellular
Rationale: An organ is composed of two or more tissue types working together for a common
function, such as the heart.
4. Which of the following represents the correct order from simplest to most complex?
A) Organ → Tissue → Cell → Organism
B) Cell → Organ → Tissue → Organ system
C) Tissue → Cell → Organ → Organism
D) Cell → Tissue → Organ → Organ system → Organism
Rationale: The hierarchy is chemical → cellular → tissue → organ → organ system → organism.
,5. The principle of complementarity states that:
A) Structure is unrelated to function
B) Function determines structure only
C) Structure determines function
D) Organs work independently
Rationale: Complementarity means that anatomy (structure) and physiology (function) are
inseparable; structure dictates what functions are possible.
6. What is the maintenance of a relatively stable internal environment called?
A) Metabolism
B) Homeostasis
C) Anabolism
D) Catabolism
Rationale: Homeostasis is the body's ability to maintain stable internal conditions despite
external changes.
7. Which type of feedback reverses a change to return the body to its set point?
A) Positive feedback
B) Negative feedback
C) Feed-forward control
D) Homeostatic imbalance
Rationale: Negative feedback opposes the initial stimulus, while positive feedback amplifies it.
8. Which of the following is an example of negative feedback?
A) Blood clotting
B) Childbirth contractions
C) Regulation of blood glucose by insulin
D) Lactation
Rationale: Insulin lowers high blood glucose, reversing the initial change, which is classic
negative feedback.
, 9. Which type of feedback is typically involved in processes that push the body further from
homeostasis?
A) Negative feedback
B) Positive feedback
C) Neutral feedback
D) Inhibitory feedback
Rationale: Positive feedback amplifies the stimulus and moves the system away from the set
point until an endpoint is reached.
10. The release of oxytocin during labor to intensify uterine contractions is an example of:
A) Negative feedback
B) Positive feedback
C) Homeostatic regulation
D) Thermoregulation
Rationale: Oxytocin causes stronger contractions, which stimulate even more oxytocin release,
amplifying the process.
11. Which plane divides the body into superior and inferior parts?
A) Sagittal
B) Frontal
C) Transverse
D) Midsagittal
Rationale: A transverse (horizontal) plane cuts the body into upper and lower sections.
12. The frontal (coronal) plane divides the body into:
A) Left and right
B) Anterior and posterior
C) Superior and inferior
D) Proximal and distal
Rationale: The coronal plane separates the front (anterior) from the back (posterior).
