EXAM 2026/2027 | Latest Edition Anatomy
& Physiology I | Verified Q&A | Pass
Guaranteed - A+ Graded
Section 1: Introduction to A&P (Homeostasis, Body Organization, Directional Terms) (8 Questions)
Q1: A patient has a wound on the anterior aspect of the forearm. In anatomical terms, where is the
wound located relative to the posterior forearm?
A. Ventral [CORRECT]
B. Dorsal
C. Superior
D. Medial
Rationale: Anterior means toward the front of the body; ventral is synonymous with anterior. The
anterior forearm is on the palm side. Dorsal (posterior) is the back side, superior is above, and medial is
toward the midline. Students often confuse ventral/dorsal with anterior/posterior, though they are
equivalent terms for human anatomy.
Q2: Which body cavity contains the heart and lungs?
A. Abdominopelvic cavity
B. Dorsal cavity
C. Thoracic cavity [CORRECT]
D. Cranial cavity
Rationale: The thoracic cavity (subdivision of the ventral cavity) contains the heart in the pericardial
cavity and lungs in the pleural cavities, separated by the mediastinum. The abdominopelvic cavity
contains digestive and urinary organs; the dorsal cavity contains the brain and spinal cord; the cranial
cavity contains only the brain.
Q3: A plane that divides the body into anterior and posterior portions is the:
,A. Midsagittal plane
B. Transverse plane
C. Frontal (coronal) plane [CORRECT]
D. Sagittal plane
Rationale: The frontal (coronal) plane divides the body into anterior (front) and posterior (back)
portions. The sagittal plane divides into left and right; midsagittal is a specific sagittal plane through the
midline creating equal halves; transverse (horizontal) divides into superior and inferior portions.
Q4: Which feedback mechanism amplifies a response, moving the body away from homeostasis
temporarily?
A. Negative feedback
B. Positive feedback [CORRECT]
C. Neural feedback
D. Hormonal feedback
Rationale: Positive feedback amplifies or reinforces a change, moving the system away from set point
temporarily until the process is complete. Examples include childbirth (oxytocin release), blood clotting,
and fruit ripening. Negative feedback (the most common homeostatic mechanism) reverses changes to
maintain stability.
Q5: The term "proximal" in anatomy refers to:
A. Farther from the trunk or point of attachment
B. Closer to the trunk or point of attachment [CORRECT]
C. Toward the front of the body
D. Toward the back of the body
Rationale: Proximal means closer to the trunk or point of attachment to the body, while distal means
farther from the trunk or attachment point. For example, the elbow is proximal to the wrist.
Anterior/posterior and ventral/dorsal describe front/back positions, not proximity to attachment.
Q6: Which level of organization is correctly ordered from simplest to most complex?
A. Organ → Tissue → Cell → Organ system → Organism
B. Cell → Tissue → Organ → Organ system → Organism [CORRECT]
C. Tissue → Cell → Organ → Organ system → Organism
D. Cell → Organ → Tissue → Organ system → Organism
,Rationale: The correct hierarchy is: chemical → cellular → tissue → organ → organ system →
organismal. Cells form tissues (groups of similar cells), tissues form organs (structures with multiple
tissue types), organs form organ systems (groups of organs working together), and systems form the
complete organism.
Q7: The abdominopelvic cavity is divided into quadrants for clinical assessment. The liver is primarily
located in which quadrant?
A. Left lower quadrant
B. Right upper quadrant [CORRECT]
C. Left upper quadrant
D. Right lower quadrant
Rationale: The liver is the largest solid organ and occupies primarily the right upper quadrant (RUQ),
extending slightly into the left upper quadrant. The gallbladder is also in the RUQ. The spleen and
stomach are in the left upper quadrant; intestines occupy lower quadrants. This knowledge is essential
for clinical assessment of abdominal pain.
Q8: Homeostasis is best defined as:
A. The absence of any change in the internal environment
B. The maintenance of relatively stable internal conditions despite external changes [CORRECT]
C. The ability to increase body temperature when cold
D. The complete shutdown of body systems during stress
Rationale: Homeostasis is the dynamic maintenance of stable internal conditions (temperature, pH,
glucose, etc.) through regulatory mechanisms that adjust to internal and external changes. It is not static
absence of change; it involves multiple coordinated responses, not just temperature; and it does not
involve system shutdown.
Section 2: Basic Chemistry & Biochemistry (8 Questions)
Q9: Which type of chemical bond involves the sharing of electron pairs between atoms?
A. Ionic bond
B. Hydrogen bond
C. Covalent bond [CORRECT]
D. Peptide bond
, Rationale: Covalent bonds involve sharing of electron pairs between atoms, forming strong bonds
within molecules. Ionic bonds involve electron transfer creating charged ions that attract; hydrogen
bonds are weak attractions between polar molecules; peptide bonds are specific covalent bonds linking
amino acids in proteins.
Q10: A solution with a pH of 3 is considered:
A. Neutral
B. Basic
C. Acidic [CORRECT]
D. Alkaline
Rationale: The pH scale ranges from 0-14; values below 7 are acidic, 7 is neutral, and above 7 are basic
(alkaline). A pH of 3 is strongly acidic (10,000 times more acidic than neutral pH 7). Blood pH is tightly
regulated between 7.35-7.45; deviations cause acidosis or alkalosis.
Q11: Which organic molecule is the primary source of quick energy for cells?
A. Lipids
B. Proteins
C. Carbohydrates [CORRECT]
D. Nucleic acids
Rationale: Carbohydrates, particularly glucose, are the primary source of quick energy for cellular
respiration and ATP production. Lipids provide long-term energy storage; proteins primarily provide
structure and function (enzymes, transport); nucleic acids store and transmit genetic information. While
proteins and lipids can be metabolized for energy, carbohydrates are preferred.
Q12: The monomer unit of proteins is:
A. Monosaccharides
B. Fatty acids
C. Amino acids [CORRECT]
D. Nucleotides
Rationale: Amino acids are the monomer units linked by peptide bonds to form polypeptides and
proteins. Monosaccharides are carbohydrate monomers; fatty acids and glycerol compose lipids;
nucleotides (sugar, phosphate, nitrogenous base) are the monomers of nucleic acids (DNA, RNA).