BIOL251 Human Anatomy & Physiology I w/Lab –
Final Exam Review 150 Questions & Verified
Answers | 2026 Update | Graded A+
EXAM DETAILS
| Attribute | Information |
|--|-|
| Institution | Portage Learning |
| Course Code | BIOL251 |
| Course Title | Human Anatomy & Physiology I w/Lab |
| Exam Format | LockDown Browser (proctored) |
| Question Types | Multiple Choice, True/False, Short Answer, Matching, Fill-in-the-Blank |
| Total Questions | 150 |
| Academic Level | Undergraduate |
| Topics Covered | Modules 1–9: Introduction, Cells & Tissues, Integumentary, Skeletal,
Muscular, Nervous, Special Senses, Endocrine |
SECTION 1: INTRODUCTION TO ANATOMY & CHEMISTRY OF LIFE
Questions 1–20
Question 1: What is the study of the structure of the body?
Answer: Anatomy is the study of the structure of the body and the relationship of its parts .
Question 2: What is the study of how body parts function?
Answer: Physiology is the study of how the body and its parts function .
Question 3: What is the principle of complementarity?
,Answer: A structure's shape (anatomy) determines its function (physiology) .
Question 4: Which of the following best describes the anatomical position?
A) Body lying face down, arms at sides
B) Body standing erect, feet parallel, palms facing forward
C) Body sitting upright with legs extended
D) Body facing sideways with palms facing backward
Correct answer: B
Rationale: The anatomical position is a standardized reference point where the body is erect,
feet slightly apart, and palms face forward. All directional terms are based on this position .
Question 5: Which plane divides the body into right and left halves?
Answer: Sagittal plane (midsagittal divides into equal halves) .
Question 6: Which plane divides the body into anterior and posterior portions?
Answer: Frontal (coronal) plane .
Question 7: Which plane divides the body into superior and inferior sections?
Answer: Transverse (horizontal) plane .
Question 8: The four most abundant elements in the human body, in order, are:
A) Carbon, Oxygen, Nitrogen, Hydrogen
B) Oxygen, Carbon, Hydrogen, Nitrogen
C) Hydrogen, Oxygen, Carbon, Nitrogen
D) Nitrogen, Oxygen, Carbon, Hydrogen
,Correct answer: B
Rationale: Oxygen (65%), Carbon (18.5%), Hydrogen (9.5%), and Nitrogen (3.2%) make up
over 96% of the body's mass .
Question 9: A subatomic particle with a positive charge is a(n):
A) Proton
B) Neutron
C) Electron
D) Ion
Correct answer: A
Rationale: Protons are positively charged particles found in the nucleus. Neutrons are neutral,
and electrons are negatively charged .
Question 10: The smallest level of structural organization that is considered living is:
A) Chemical level
B) Cellular level
C) Tissue level
D) Organ level
Correct answer: B
Rationale: Cells are the basic structural and functional units of life. The chemical level (atoms,
molecules) is not considered living .
Question 11: Which of the following is an example of a negative feedback mechanism?
A) Blood clotting
B) Childbirth contractions
C) Sweating to cool the body
D) Nerve impulse transmission
Correct answer: C
, Rationale: Negative feedback reverses a deviation from homeostasis. Sweating reduces body
temperature when it rises too high .
Question 12: Which of the following is an example of a positive feedback mechanism?
A) Blood clotting
B) Regulation of blood pressure
C) Regulation of blood glucose
D) Regulation of body temperature
Correct answer: A
Rationale: Positive feedback amplifies the initial stimulus. Blood clotting and childbirth
contractions are examples .
Question 13: The heart is located in which body cavity?
A) Pleural cavity
B) Peritoneal cavity
C) Mediastinum
D) Cranial cavity
Correct answer: C
Rationale: The mediastinum is the central compartment of the thoracic cavity containing the
heart, esophagus, trachea, and great vessels .
Question 14: What is the atomic number?
A) The number of neutrons in an atom
B) The number of protons in an atom
C) The number of electrons in an atom
D) The total number of protons and neutrons
Correct answer: B
Rationale: The atomic number equals the number of protons in the nucleus. It identifies the
element .
Final Exam Review 150 Questions & Verified
Answers | 2026 Update | Graded A+
EXAM DETAILS
| Attribute | Information |
|--|-|
| Institution | Portage Learning |
| Course Code | BIOL251 |
| Course Title | Human Anatomy & Physiology I w/Lab |
| Exam Format | LockDown Browser (proctored) |
| Question Types | Multiple Choice, True/False, Short Answer, Matching, Fill-in-the-Blank |
| Total Questions | 150 |
| Academic Level | Undergraduate |
| Topics Covered | Modules 1–9: Introduction, Cells & Tissues, Integumentary, Skeletal,
Muscular, Nervous, Special Senses, Endocrine |
SECTION 1: INTRODUCTION TO ANATOMY & CHEMISTRY OF LIFE
Questions 1–20
Question 1: What is the study of the structure of the body?
Answer: Anatomy is the study of the structure of the body and the relationship of its parts .
Question 2: What is the study of how body parts function?
Answer: Physiology is the study of how the body and its parts function .
Question 3: What is the principle of complementarity?
,Answer: A structure's shape (anatomy) determines its function (physiology) .
Question 4: Which of the following best describes the anatomical position?
A) Body lying face down, arms at sides
B) Body standing erect, feet parallel, palms facing forward
C) Body sitting upright with legs extended
D) Body facing sideways with palms facing backward
Correct answer: B
Rationale: The anatomical position is a standardized reference point where the body is erect,
feet slightly apart, and palms face forward. All directional terms are based on this position .
Question 5: Which plane divides the body into right and left halves?
Answer: Sagittal plane (midsagittal divides into equal halves) .
Question 6: Which plane divides the body into anterior and posterior portions?
Answer: Frontal (coronal) plane .
Question 7: Which plane divides the body into superior and inferior sections?
Answer: Transverse (horizontal) plane .
Question 8: The four most abundant elements in the human body, in order, are:
A) Carbon, Oxygen, Nitrogen, Hydrogen
B) Oxygen, Carbon, Hydrogen, Nitrogen
C) Hydrogen, Oxygen, Carbon, Nitrogen
D) Nitrogen, Oxygen, Carbon, Hydrogen
,Correct answer: B
Rationale: Oxygen (65%), Carbon (18.5%), Hydrogen (9.5%), and Nitrogen (3.2%) make up
over 96% of the body's mass .
Question 9: A subatomic particle with a positive charge is a(n):
A) Proton
B) Neutron
C) Electron
D) Ion
Correct answer: A
Rationale: Protons are positively charged particles found in the nucleus. Neutrons are neutral,
and electrons are negatively charged .
Question 10: The smallest level of structural organization that is considered living is:
A) Chemical level
B) Cellular level
C) Tissue level
D) Organ level
Correct answer: B
Rationale: Cells are the basic structural and functional units of life. The chemical level (atoms,
molecules) is not considered living .
Question 11: Which of the following is an example of a negative feedback mechanism?
A) Blood clotting
B) Childbirth contractions
C) Sweating to cool the body
D) Nerve impulse transmission
Correct answer: C
, Rationale: Negative feedback reverses a deviation from homeostasis. Sweating reduces body
temperature when it rises too high .
Question 12: Which of the following is an example of a positive feedback mechanism?
A) Blood clotting
B) Regulation of blood pressure
C) Regulation of blood glucose
D) Regulation of body temperature
Correct answer: A
Rationale: Positive feedback amplifies the initial stimulus. Blood clotting and childbirth
contractions are examples .
Question 13: The heart is located in which body cavity?
A) Pleural cavity
B) Peritoneal cavity
C) Mediastinum
D) Cranial cavity
Correct answer: C
Rationale: The mediastinum is the central compartment of the thoracic cavity containing the
heart, esophagus, trachea, and great vessels .
Question 14: What is the atomic number?
A) The number of neutrons in an atom
B) The number of protons in an atom
C) The number of electrons in an atom
D) The total number of protons and neutrons
Correct answer: B
Rationale: The atomic number equals the number of protons in the nucleus. It identifies the
element .
