2026 Edition Anatomy and Physiology I
Exam questions and verified answers
with rationales
1. Which level of biological organization consists of similar
cells working together to perform a specific function?
A. Organ
B. Tissue
C. Organ system
D. Organism
Correct Answer: B. Tissue
Rationale: A tissue is a group of similar cells that work
together to perform a particular function, such as muscle
tissue or nervous tissue.
2. Which organelle is primarily responsible for producing
ATP in the cell?
A. Ribosome
B. Nucleus
C. Mitochondrion
D. Golgi apparatus
Correct Answer: C. Mitochondrion
,Rationale: Mitochondria generate ATP through cellular
respiration and are known as the "powerhouses" of the cell.
3. Which body cavity contains the heart?
A. Abdominal cavity
B. Pelvic cavity
C. Pericardial cavity
D. Cranial cavity
Correct Answer: C. Pericardial cavity
Rationale: The heart is enclosed within the pericardial cavity,
which lies in the thoracic cavity.
4. Homeostasis refers to the body's ability to:
A. Produce hormones continuously
B. Maintain a relatively stable internal environment
C. Increase body temperature at all times
D. Eliminate all microorganisms
Correct Answer: B. Maintain a relatively stable internal
environment
Rationale: Homeostasis is the regulation of internal
conditions such as temperature, pH, and fluid balance within
normal limits.
5. Which anatomical position describes the body standing
upright with palms facing forward?
,A. Supine position
B. Prone position
C. Anatomical position
D. Fowler's position
Correct Answer: C. Anatomical position
Rationale: The anatomical position is the standard reference
position used in anatomy.
6. Which directional term means "toward the head"?
A. Inferior
B. Distal
C. Superior
D. Lateral
Correct Answer: C. Superior
Rationale: Superior indicates a position toward the head or
upper part of the body.
7. Which membrane lines the walls of the abdominal cavity?
A. Visceral pleura
B. Parietal peritoneum
C. Visceral pericardium
D. Meninges
Correct Answer: B. Parietal peritoneum
, Rationale: The parietal peritoneum lines the abdominal
cavity, while the visceral peritoneum covers abdominal
organs.
8. Which type of tissue is specialized for contraction and
movement?
A. Nervous tissue
B. Connective tissue
C. Epithelial tissue
D. Muscle tissue
Correct Answer: D. Muscle tissue
Rationale: Muscle tissue contracts to produce movement of
the body and internal organs.
9. Which epithelial tissue is best adapted for rapid diffusion?
A. Stratified squamous epithelium
B. Transitional epithelium
C. Simple squamous epithelium
D. Cuboidal epithelium
Correct Answer: C. Simple squamous epithelium
Rationale: Its thin, single-cell layer allows efficient diffusion,
such as in the alveoli of the lungs.
10. Which connective tissue stores most of the body's fat?
Exam questions and verified answers
with rationales
1. Which level of biological organization consists of similar
cells working together to perform a specific function?
A. Organ
B. Tissue
C. Organ system
D. Organism
Correct Answer: B. Tissue
Rationale: A tissue is a group of similar cells that work
together to perform a particular function, such as muscle
tissue or nervous tissue.
2. Which organelle is primarily responsible for producing
ATP in the cell?
A. Ribosome
B. Nucleus
C. Mitochondrion
D. Golgi apparatus
Correct Answer: C. Mitochondrion
,Rationale: Mitochondria generate ATP through cellular
respiration and are known as the "powerhouses" of the cell.
3. Which body cavity contains the heart?
A. Abdominal cavity
B. Pelvic cavity
C. Pericardial cavity
D. Cranial cavity
Correct Answer: C. Pericardial cavity
Rationale: The heart is enclosed within the pericardial cavity,
which lies in the thoracic cavity.
4. Homeostasis refers to the body's ability to:
A. Produce hormones continuously
B. Maintain a relatively stable internal environment
C. Increase body temperature at all times
D. Eliminate all microorganisms
Correct Answer: B. Maintain a relatively stable internal
environment
Rationale: Homeostasis is the regulation of internal
conditions such as temperature, pH, and fluid balance within
normal limits.
5. Which anatomical position describes the body standing
upright with palms facing forward?
,A. Supine position
B. Prone position
C. Anatomical position
D. Fowler's position
Correct Answer: C. Anatomical position
Rationale: The anatomical position is the standard reference
position used in anatomy.
6. Which directional term means "toward the head"?
A. Inferior
B. Distal
C. Superior
D. Lateral
Correct Answer: C. Superior
Rationale: Superior indicates a position toward the head or
upper part of the body.
7. Which membrane lines the walls of the abdominal cavity?
A. Visceral pleura
B. Parietal peritoneum
C. Visceral pericardium
D. Meninges
Correct Answer: B. Parietal peritoneum
, Rationale: The parietal peritoneum lines the abdominal
cavity, while the visceral peritoneum covers abdominal
organs.
8. Which type of tissue is specialized for contraction and
movement?
A. Nervous tissue
B. Connective tissue
C. Epithelial tissue
D. Muscle tissue
Correct Answer: D. Muscle tissue
Rationale: Muscle tissue contracts to produce movement of
the body and internal organs.
9. Which epithelial tissue is best adapted for rapid diffusion?
A. Stratified squamous epithelium
B. Transitional epithelium
C. Simple squamous epithelium
D. Cuboidal epithelium
Correct Answer: C. Simple squamous epithelium
Rationale: Its thin, single-cell layer allows efficient diffusion,
such as in the alveoli of the lungs.
10. Which connective tissue stores most of the body's fat?
