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Seeley's Anatomy & Physiology 13th Edition 2026-2027 BANK
QUESTIONS WITH DETAILED VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE (100% CORRECT
ANSWERS A+ GRADED
1. Which level of organization is considered the basic unit of life?
A) Atom
B) Molecule
C) Cell
D) Tissue
Answer: C) Cell
Explanation: The cell is the smallest structural and functional unit of
living organisms. Atoms and molecules are chemical levels, while
tissues are groups of similar cells.
2. The maintenance of a relatively stable internal environment is
termed:
A) Metabolism
B) Homeostasis
C) Responsiveness
D) Differentiation
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Answer: B) Homeostasis
Explanation: Homeostasis refers to the body's ability to maintain a
stable internal environment despite external changes. Metabolism is
the sum of chemical reactions.
3. Which organ system is responsible for the production of blood cells?
A) Cardiovascular
B) Lymphatic
C) Skeletal
D) Endocrine
Answer: C) Skeletal
Explanation: Red bone marrow within certain bones is the primary site
of hematopoiesis, the production of blood cells. The cardiovascular
system transports them.
4. The directional term "proximal" means:
A) Closer to the point of attachment to the body
B) Farther from the point of attachment to the body
C) Toward the back of the body
D) Toward the front of the body
Answer: A) Closer to the point of attachment to the body
Explanation: Proximal is used to describe limbs and indicates a
structure is closer to the trunk. Distal means farther away. Anterior and
posterior refer to front and back.
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5. Which plane divides the body into equal right and left halves?
A) Coronal
B) Transverse
C) Midsagittal
D) Parasagittal
Answer: C) Midsagittal
Explanation: A midsagittal plane passes exactly through the midline. A
parasagittal plane divides the body into unequal right and left portions.
Coronal divides anterior and posterior.
6. The thoracic cavity is separated from the abdominal cavity by the:
A) Pleura
B) Diaphragm
C) Mediastinum
D) Pericardium
Answer: B) Diaphragm
Explanation: The diaphragm is a muscular sheet that forms the floor of
the thoracic cavity and the roof of the abdominopelvic cavity. The
mediastinum is a partition in the thorax.
7. What type of feedback mechanism amplifies a change in the body?
A) Negative feedback
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B) Positive feedback
C) Feed-forward control
D) Homeostatic regulation
Answer: B) Positive feedback
Explanation: Positive feedback mechanisms move the variable away
from the set point, amplifying the change. Childbirth and blood clotting
are examples. Negative feedback resists change.
8. The serous membrane covering the lungs is the:
A) Pericardium
B) Peritoneum
C) Pleura
D) Mesentery
Answer: C) Pleura
Explanation: The pleural membrane covers the lungs and lines the
thoracic cavity. The pericardium covers the heart, and the peritoneum
lines the abdominopelvic cavity.
9. Which subatomic particle has a positive charge?
A) Electron
B) Proton
C) Neutron
D) Positron
Seeley's Anatomy & Physiology 13th Edition 2026-2027 BANK
QUESTIONS WITH DETAILED VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE (100% CORRECT
ANSWERS A+ GRADED
1. Which level of organization is considered the basic unit of life?
A) Atom
B) Molecule
C) Cell
D) Tissue
Answer: C) Cell
Explanation: The cell is the smallest structural and functional unit of
living organisms. Atoms and molecules are chemical levels, while
tissues are groups of similar cells.
2. The maintenance of a relatively stable internal environment is
termed:
A) Metabolism
B) Homeostasis
C) Responsiveness
D) Differentiation
,2|Page
Answer: B) Homeostasis
Explanation: Homeostasis refers to the body's ability to maintain a
stable internal environment despite external changes. Metabolism is
the sum of chemical reactions.
3. Which organ system is responsible for the production of blood cells?
A) Cardiovascular
B) Lymphatic
C) Skeletal
D) Endocrine
Answer: C) Skeletal
Explanation: Red bone marrow within certain bones is the primary site
of hematopoiesis, the production of blood cells. The cardiovascular
system transports them.
4. The directional term "proximal" means:
A) Closer to the point of attachment to the body
B) Farther from the point of attachment to the body
C) Toward the back of the body
D) Toward the front of the body
Answer: A) Closer to the point of attachment to the body
Explanation: Proximal is used to describe limbs and indicates a
structure is closer to the trunk. Distal means farther away. Anterior and
posterior refer to front and back.
,3|Page
5. Which plane divides the body into equal right and left halves?
A) Coronal
B) Transverse
C) Midsagittal
D) Parasagittal
Answer: C) Midsagittal
Explanation: A midsagittal plane passes exactly through the midline. A
parasagittal plane divides the body into unequal right and left portions.
Coronal divides anterior and posterior.
6. The thoracic cavity is separated from the abdominal cavity by the:
A) Pleura
B) Diaphragm
C) Mediastinum
D) Pericardium
Answer: B) Diaphragm
Explanation: The diaphragm is a muscular sheet that forms the floor of
the thoracic cavity and the roof of the abdominopelvic cavity. The
mediastinum is a partition in the thorax.
7. What type of feedback mechanism amplifies a change in the body?
A) Negative feedback
, 4|Page
B) Positive feedback
C) Feed-forward control
D) Homeostatic regulation
Answer: B) Positive feedback
Explanation: Positive feedback mechanisms move the variable away
from the set point, amplifying the change. Childbirth and blood clotting
are examples. Negative feedback resists change.
8. The serous membrane covering the lungs is the:
A) Pericardium
B) Peritoneum
C) Pleura
D) Mesentery
Answer: C) Pleura
Explanation: The pleural membrane covers the lungs and lines the
thoracic cavity. The pericardium covers the heart, and the peritoneum
lines the abdominopelvic cavity.
9. Which subatomic particle has a positive charge?
A) Electron
B) Proton
C) Neutron
D) Positron
