BIOL 251 Human Anatomy & Physiology I w/Lab |
Module 1 Exam Review 70+ Actual Questions and
Answers -Summary | LockDown Browser |
Portage Learning
Section 1: Foundations of A&P & Levels of Organization (Questions 1–10)
1. Which of the following is the best definition of physiology?
A) The study of the internal and external structures of the body.
B) The study of how the structural machinery of the body works and functions.
C) The evolutionary history of human organ systems.
D) The microscopic analysis of diseased cells.
Answer: B) The study of how the structural machinery of the body works and functions.
Explanation: While anatomy focuses on structure and location, physiology specifically deals
with the mechanisms and functions of those structures.
2. What level of organization is defined as a group of similar cells working together to
perform a specific common function?
A) Organ level
B) Organelle level
C) Tissue level
D) Organ system level
Answer: C) Tissue level Explanation: Tissues consist of similar cells and their extracellular
matrix working together to perform a specialized activity.
,3. Which sequence correctly lists the levels of structural organization from simplest
to most complex?
A) Chemical → Cellular → Tissue → Organ → Organ System → Organism
B) Organelle → Chemical → Cell → Tissue → Organism
C) Chemical → Tissue → Cellular → Organ System → Organ
D) Organism → Organ System → Organ → Tissue → Cellular → Chemical
Answer: A) Chemical → Cellular → Tissue → Organ → Organ System → Organism
Explanation: Life builds from the basic atomic/chemical level up to the entire functioning
organism.
4. What is considered the basic structural and functional unit of all living organisms?
A) Atom
B) Organelle
C) Cell
D) Tissue
Answer: C) Cell Explanation: The cell is the smallest structural unit of an organism that is
capable of independent functioning and is considered alive.
5. An organ must contain at least how many different tissue types to be classified as
such?
A) One
B) Two or more
C) Exactly four
D) At least ten
Answer: B) Two or more Explanation: An organ is a structure composed of two or more
distinct tissue types integrated to perform specific functions.
, 6. Which organ system is primarily responsible for environmental protection,
temperature regulation, and water retention?
A) Skeletal system
B) Lymphatic system
C) Urinary system
D) Integumentary system
Answer: D) Integumentary system Explanation: The integumentary system (skin, hair, nails,
glands) protects the body from external hazards and regulates temperature.
7. Hormones are chemical messengers synthesized and secreted by organs
belonging to which system?
A) Endocrine system
B) Nervous system
C) Cardiovascular system
D) Lymphatic system
Answer: A) Endocrine system Explanation: The endocrine system consists of glands that
secrete hormones directly into the blood to regulate prolonged body processes.
8. Which of the following organs is a component of the lymphatic system?
A) Pancreas
B) Spleen
C) Kidney
D) Gallbladder
Answer: B) Spleen Explanation: The spleen, along with the tonsils, thymus, and lymph
nodes, is a key lymphoid organ involved in filtration and immunity.
9. The trachea, bronchi, and lungs are major components of which organ system?
Module 1 Exam Review 70+ Actual Questions and
Answers -Summary | LockDown Browser |
Portage Learning
Section 1: Foundations of A&P & Levels of Organization (Questions 1–10)
1. Which of the following is the best definition of physiology?
A) The study of the internal and external structures of the body.
B) The study of how the structural machinery of the body works and functions.
C) The evolutionary history of human organ systems.
D) The microscopic analysis of diseased cells.
Answer: B) The study of how the structural machinery of the body works and functions.
Explanation: While anatomy focuses on structure and location, physiology specifically deals
with the mechanisms and functions of those structures.
2. What level of organization is defined as a group of similar cells working together to
perform a specific common function?
A) Organ level
B) Organelle level
C) Tissue level
D) Organ system level
Answer: C) Tissue level Explanation: Tissues consist of similar cells and their extracellular
matrix working together to perform a specialized activity.
,3. Which sequence correctly lists the levels of structural organization from simplest
to most complex?
A) Chemical → Cellular → Tissue → Organ → Organ System → Organism
B) Organelle → Chemical → Cell → Tissue → Organism
C) Chemical → Tissue → Cellular → Organ System → Organ
D) Organism → Organ System → Organ → Tissue → Cellular → Chemical
Answer: A) Chemical → Cellular → Tissue → Organ → Organ System → Organism
Explanation: Life builds from the basic atomic/chemical level up to the entire functioning
organism.
4. What is considered the basic structural and functional unit of all living organisms?
A) Atom
B) Organelle
C) Cell
D) Tissue
Answer: C) Cell Explanation: The cell is the smallest structural unit of an organism that is
capable of independent functioning and is considered alive.
5. An organ must contain at least how many different tissue types to be classified as
such?
A) One
B) Two or more
C) Exactly four
D) At least ten
Answer: B) Two or more Explanation: An organ is a structure composed of two or more
distinct tissue types integrated to perform specific functions.
, 6. Which organ system is primarily responsible for environmental protection,
temperature regulation, and water retention?
A) Skeletal system
B) Lymphatic system
C) Urinary system
D) Integumentary system
Answer: D) Integumentary system Explanation: The integumentary system (skin, hair, nails,
glands) protects the body from external hazards and regulates temperature.
7. Hormones are chemical messengers synthesized and secreted by organs
belonging to which system?
A) Endocrine system
B) Nervous system
C) Cardiovascular system
D) Lymphatic system
Answer: A) Endocrine system Explanation: The endocrine system consists of glands that
secrete hormones directly into the blood to regulate prolonged body processes.
8. Which of the following organs is a component of the lymphatic system?
A) Pancreas
B) Spleen
C) Kidney
D) Gallbladder
Answer: B) Spleen Explanation: The spleen, along with the tonsils, thymus, and lymph
nodes, is a key lymphoid organ involved in filtration and immunity.
9. The trachea, bronchi, and lungs are major components of which organ system?
