1
RIO SALADO BIO 201 ANATOMY &
PHYSIOLOGY — FINAL EXAM
200 MCQs | Comprehensive Exam Preparation & Revision
📋 EXAM COVERAGE DESCRIPTION
This exam covers the full scope of BIO 201: Human Anatomy & Physiology I as taught at Rio
Salado College, including:
Introduction to A&P: Anatomical terminology, body planes, cavities, homeostasis,
feedback mechanisms
Chemistry of Life: Atoms, molecules, pH, organic molecules (carbohydrates, lipids,
proteins, nucleic acids)
Cell Biology: Cell structure and organelles, membrane transport (passive and active), cell
cycle, mitosis
Tissues: Epithelial, connective, muscle, and nervous tissue types and functions
Integumentary System: Skin layers, appendages, functions, wound healing
Skeletal System: Bone tissue, bone markings, axial and appendicular skeleton, joints
Muscular System: Muscle tissue types, sliding filament theory, neuromuscular junction,
muscle physiology, major muscles
Nervous System: Neuron structure, action potentials, synaptic transmission, CNS, PNS,
ANS
Sensory Systems: Special senses (vision, hearing, taste, smell, equilibrium), general
senses
Endocrine System: Hormones, glands, feedback loops, major endocrine disorders
200 MCQ QUESTIONS
SECTION 1: INTRODUCTION TO ANATOMY & PHYSIOLOGY
1. The anatomical position is defined as the body:
, 2
A. Lying face down with arms at the sides B. Standing erect, facing forward, with arms at the
sides, palms facing anteriorly (forward) C. Standing erect with arms raised above the head D.
Lying face up with legs crossed E. Sitting with hands on knees, palms down
(Correct Answer: B) Rationale: The standard anatomical position requires: body upright
(standing erect); face forward; feet together or slightly apart; arms hanging at the sides; palms of
the hands turned ANTERIORLY (facing forward). This position is the universal reference for all
anatomical directional terms. Without this standard reference, terms like "superior" and
"inferior" would be ambiguous depending on body orientation. All anatomical descriptions
assume this position regardless of the actual position of the patient or cadaver.
2. The term "medial" refers to a structure that is:
A. Closer to the back of the body B. Closer to the midline of the body C. Farther from the
midline of the body D. Closer to the surface of the body E. Farther from the point of attachment
of a limb
(Correct Answer: B) Rationale: Medial means toward the midline (the imaginary vertical line
dividing the body into left and right halves). For example, the nose is medial to the eyes; the ulna
is on the medial side of the forearm. LATERAL means away from the midline (the ears are
lateral to the nose). SUPERFICIAL means closer to the surface; DEEP means farther from the
surface. PROXIMAL means closer to the point of attachment; DISTAL means farther from the
attachment. These paired directional terms are fundamental to anatomical communication.
3. The sagittal plane divides the body into:
A. Superior and inferior portions B. Anterior and posterior portions C. Left and right portions D.
Medial and lateral sections E. Diagonal sections at any angle
(Correct Answer: C) Rationale: Body planes: SAGITTAL plane: divides into LEFT and
RIGHT portions — a midsagittal (median) plane divides into equal halves; a parasagittal plane
divides into unequal left/right portions. FRONTAL (CORONAL) plane: divides into
ANTERIOR and POSTERIOR portions. TRANSVERSE (HORIZONTAL) plane: divides into
SUPERIOR and INFERIOR portions. OBLIQUE plane: cuts at an angle — least commonly used
clinically but important in medical imaging. Understanding body planes is essential for
interpreting CT, MRI, and other medical imaging studies which display slices through the body
in specific planes.
4. The dorsal body cavity contains which structures?
, 3
A. Heart, lungs, and stomach B. Brain and spinal cord C. Liver, kidneys, and intestines D.
Urinary bladder and reproductive organs E. Thymus and esophagus only
(Correct Answer: B) Rationale: The two major body cavities: DORSAL (posterior) body
cavity: contains the CNS — subdivided into the CRANIAL cavity (brain) and SPINAL
(vertebral) cavity (spinal cord); lined by meninges; protected by the skull and vertebral column.
VENTRAL (anterior) body cavity: subdivided by the diaphragm into the THORACIC cavity
(above — contains lungs in pleural cavities, heart in pericardial cavity, and mediastinum) and
ABDOMINOPELVIC cavity (below — contains digestive, urinary, and reproductive organs);
lined by serous membranes.
5. Homeostasis is BEST defined as:
A. The process of digesting food and absorbing nutrients B. The maintenance of a relatively
stable internal environment within the body despite changing external conditions C. The
elimination of waste products from cellular metabolism D. The coordination of muscle
contractions during movement E. The immune system's response to pathogens
(Correct Answer: B) Rationale: Homeostasis (Walter Cannon) is the body's ability to maintain
a stable internal environment (temperature, pH, blood glucose, osmolarity, blood pressure, etc.)
within a narrow range despite continuous changes in internal and external conditions. It is
maintained through feedback mechanisms involving: RECEPTOR (sensor): detects changes
from the set point; CONTROL CENTER: receives information and determines the response
(usually the brain or endocrine glands); EFFECTOR: carries out the corrective response
(muscles, glands). Homeostatic imbalance leads to disease. NEGATIVE FEEDBACK is the
primary mechanism (opposes the change); POSITIVE FEEDBACK amplifies the change
(childbirth, blood clotting).
6. In a NEGATIVE feedback loop controlling body temperature, if body temperature rises above
the set point:
A. The hypothalamus triggers more heat production to continue the rise B. The hypothalamus
activates cooling mechanisms (sweating, vasodilation) to bring temperature back to the set point
C. The adrenal glands release cortisol to increase temperature further D. The heart rate increases
to distribute heat throughout the body E. The body initiates shivering to generate more heat
(Correct Answer: B) Rationale: Negative feedback OPPOSES the change — the response
counteracts the deviation from the set point and returns the variable to normal. For body
temperature: RISE in temperature → hypothalamus (control center) detects increase → activates
effectors: sweat glands (evaporative cooling) and cutaneous blood vessels dilate (convective heat
loss) → temperature FALLS back toward set point. FALL in temperature → hypothalamus
activates: shivering (muscular heat production), vasoconstriction (reduces heat loss), piloerection
, 4
→ temperature RISES back toward set point. This bidirectional control maintains the set point
around 37°C. Positive feedback examples: childbirth (contractions), blood clotting, action
potentials.
SECTION 2: CHEMISTRY OF LIFE
7. An atom's atomic number is determined by:
A. The number of neutrons in the nucleus B. The total number of protons plus neutrons C. The
number of protons in the nucleus D. The number of electrons in the outer shell E. The atomic
mass minus the number of neutrons
(Correct Answer: C) Rationale: ATOMIC NUMBER = number of PROTONS in the nucleus.
This number is unique to each element and determines the element's chemical identity. In a
neutral (uncharged) atom, the number of electrons equals the number of protons. MASS
NUMBER = protons + neutrons. ATOMIC MASS (weight) = weighted average of all naturally
occurring isotopes of that element. ISOTOPES: same atomic number (same element) but
different number of neutrons (different mass numbers). Example: Carbon-12 (6p + 6n) and
Carbon-14 (6p + 8n) are both carbon (atomic number 6) but are different isotopes.
8. A COVALENT bond is formed when:
A. One atom transfers an electron to another atom, creating ions B. Two atoms share electrons
between them C. Opposite charges attract between ions D. Hydrogen atoms are attracted to
electronegative atoms E. Van der Waals forces hold nonpolar molecules together
(Correct Answer: B) Rationale: Types of chemical bonds: COVALENT bonds: atoms SHARE
electrons — can be nonpolar (electrons shared equally, same electronegativity) or polar
(electrons shared unequally, different electronegativities — creates partial charges δ+ and δ-);
the strongest bonds in biological molecules. IONIC bonds: one atom TRANSFERS an electron
to another — creates cations (+) and anions (-); electrostatic attraction holds them together;
weaker than covalent in aqueous solution. HYDROGEN bonds: weak attractive force between a
partially positive hydrogen (bonded to N, O, or F) and a nearby electronegative atom — critical
for DNA structure, protein folding, and water's properties. VAN DER WAALS forces: weakest
— transient dipoles.
9. The pH scale measures hydrogen ion concentration. A solution with a pH of 3 compared to a
solution with a pH of 5 is:
RIO SALADO BIO 201 ANATOMY &
PHYSIOLOGY — FINAL EXAM
200 MCQs | Comprehensive Exam Preparation & Revision
📋 EXAM COVERAGE DESCRIPTION
This exam covers the full scope of BIO 201: Human Anatomy & Physiology I as taught at Rio
Salado College, including:
Introduction to A&P: Anatomical terminology, body planes, cavities, homeostasis,
feedback mechanisms
Chemistry of Life: Atoms, molecules, pH, organic molecules (carbohydrates, lipids,
proteins, nucleic acids)
Cell Biology: Cell structure and organelles, membrane transport (passive and active), cell
cycle, mitosis
Tissues: Epithelial, connective, muscle, and nervous tissue types and functions
Integumentary System: Skin layers, appendages, functions, wound healing
Skeletal System: Bone tissue, bone markings, axial and appendicular skeleton, joints
Muscular System: Muscle tissue types, sliding filament theory, neuromuscular junction,
muscle physiology, major muscles
Nervous System: Neuron structure, action potentials, synaptic transmission, CNS, PNS,
ANS
Sensory Systems: Special senses (vision, hearing, taste, smell, equilibrium), general
senses
Endocrine System: Hormones, glands, feedback loops, major endocrine disorders
200 MCQ QUESTIONS
SECTION 1: INTRODUCTION TO ANATOMY & PHYSIOLOGY
1. The anatomical position is defined as the body:
, 2
A. Lying face down with arms at the sides B. Standing erect, facing forward, with arms at the
sides, palms facing anteriorly (forward) C. Standing erect with arms raised above the head D.
Lying face up with legs crossed E. Sitting with hands on knees, palms down
(Correct Answer: B) Rationale: The standard anatomical position requires: body upright
(standing erect); face forward; feet together or slightly apart; arms hanging at the sides; palms of
the hands turned ANTERIORLY (facing forward). This position is the universal reference for all
anatomical directional terms. Without this standard reference, terms like "superior" and
"inferior" would be ambiguous depending on body orientation. All anatomical descriptions
assume this position regardless of the actual position of the patient or cadaver.
2. The term "medial" refers to a structure that is:
A. Closer to the back of the body B. Closer to the midline of the body C. Farther from the
midline of the body D. Closer to the surface of the body E. Farther from the point of attachment
of a limb
(Correct Answer: B) Rationale: Medial means toward the midline (the imaginary vertical line
dividing the body into left and right halves). For example, the nose is medial to the eyes; the ulna
is on the medial side of the forearm. LATERAL means away from the midline (the ears are
lateral to the nose). SUPERFICIAL means closer to the surface; DEEP means farther from the
surface. PROXIMAL means closer to the point of attachment; DISTAL means farther from the
attachment. These paired directional terms are fundamental to anatomical communication.
3. The sagittal plane divides the body into:
A. Superior and inferior portions B. Anterior and posterior portions C. Left and right portions D.
Medial and lateral sections E. Diagonal sections at any angle
(Correct Answer: C) Rationale: Body planes: SAGITTAL plane: divides into LEFT and
RIGHT portions — a midsagittal (median) plane divides into equal halves; a parasagittal plane
divides into unequal left/right portions. FRONTAL (CORONAL) plane: divides into
ANTERIOR and POSTERIOR portions. TRANSVERSE (HORIZONTAL) plane: divides into
SUPERIOR and INFERIOR portions. OBLIQUE plane: cuts at an angle — least commonly used
clinically but important in medical imaging. Understanding body planes is essential for
interpreting CT, MRI, and other medical imaging studies which display slices through the body
in specific planes.
4. The dorsal body cavity contains which structures?
, 3
A. Heart, lungs, and stomach B. Brain and spinal cord C. Liver, kidneys, and intestines D.
Urinary bladder and reproductive organs E. Thymus and esophagus only
(Correct Answer: B) Rationale: The two major body cavities: DORSAL (posterior) body
cavity: contains the CNS — subdivided into the CRANIAL cavity (brain) and SPINAL
(vertebral) cavity (spinal cord); lined by meninges; protected by the skull and vertebral column.
VENTRAL (anterior) body cavity: subdivided by the diaphragm into the THORACIC cavity
(above — contains lungs in pleural cavities, heart in pericardial cavity, and mediastinum) and
ABDOMINOPELVIC cavity (below — contains digestive, urinary, and reproductive organs);
lined by serous membranes.
5. Homeostasis is BEST defined as:
A. The process of digesting food and absorbing nutrients B. The maintenance of a relatively
stable internal environment within the body despite changing external conditions C. The
elimination of waste products from cellular metabolism D. The coordination of muscle
contractions during movement E. The immune system's response to pathogens
(Correct Answer: B) Rationale: Homeostasis (Walter Cannon) is the body's ability to maintain
a stable internal environment (temperature, pH, blood glucose, osmolarity, blood pressure, etc.)
within a narrow range despite continuous changes in internal and external conditions. It is
maintained through feedback mechanisms involving: RECEPTOR (sensor): detects changes
from the set point; CONTROL CENTER: receives information and determines the response
(usually the brain or endocrine glands); EFFECTOR: carries out the corrective response
(muscles, glands). Homeostatic imbalance leads to disease. NEGATIVE FEEDBACK is the
primary mechanism (opposes the change); POSITIVE FEEDBACK amplifies the change
(childbirth, blood clotting).
6. In a NEGATIVE feedback loop controlling body temperature, if body temperature rises above
the set point:
A. The hypothalamus triggers more heat production to continue the rise B. The hypothalamus
activates cooling mechanisms (sweating, vasodilation) to bring temperature back to the set point
C. The adrenal glands release cortisol to increase temperature further D. The heart rate increases
to distribute heat throughout the body E. The body initiates shivering to generate more heat
(Correct Answer: B) Rationale: Negative feedback OPPOSES the change — the response
counteracts the deviation from the set point and returns the variable to normal. For body
temperature: RISE in temperature → hypothalamus (control center) detects increase → activates
effectors: sweat glands (evaporative cooling) and cutaneous blood vessels dilate (convective heat
loss) → temperature FALLS back toward set point. FALL in temperature → hypothalamus
activates: shivering (muscular heat production), vasoconstriction (reduces heat loss), piloerection
, 4
→ temperature RISES back toward set point. This bidirectional control maintains the set point
around 37°C. Positive feedback examples: childbirth (contractions), blood clotting, action
potentials.
SECTION 2: CHEMISTRY OF LIFE
7. An atom's atomic number is determined by:
A. The number of neutrons in the nucleus B. The total number of protons plus neutrons C. The
number of protons in the nucleus D. The number of electrons in the outer shell E. The atomic
mass minus the number of neutrons
(Correct Answer: C) Rationale: ATOMIC NUMBER = number of PROTONS in the nucleus.
This number is unique to each element and determines the element's chemical identity. In a
neutral (uncharged) atom, the number of electrons equals the number of protons. MASS
NUMBER = protons + neutrons. ATOMIC MASS (weight) = weighted average of all naturally
occurring isotopes of that element. ISOTOPES: same atomic number (same element) but
different number of neutrons (different mass numbers). Example: Carbon-12 (6p + 6n) and
Carbon-14 (6p + 8n) are both carbon (atomic number 6) but are different isotopes.
8. A COVALENT bond is formed when:
A. One atom transfers an electron to another atom, creating ions B. Two atoms share electrons
between them C. Opposite charges attract between ions D. Hydrogen atoms are attracted to
electronegative atoms E. Van der Waals forces hold nonpolar molecules together
(Correct Answer: B) Rationale: Types of chemical bonds: COVALENT bonds: atoms SHARE
electrons — can be nonpolar (electrons shared equally, same electronegativity) or polar
(electrons shared unequally, different electronegativities — creates partial charges δ+ and δ-);
the strongest bonds in biological molecules. IONIC bonds: one atom TRANSFERS an electron
to another — creates cations (+) and anions (-); electrostatic attraction holds them together;
weaker than covalent in aqueous solution. HYDROGEN bonds: weak attractive force between a
partially positive hydrogen (bonded to N, O, or F) and a nearby electronegative atom — critical
for DNA structure, protein folding, and water's properties. VAN DER WAALS forces: weakest
— transient dipoles.
9. The pH scale measures hydrogen ion concentration. A solution with a pH of 3 compared to a
solution with a pH of 5 is:
