Test Bank for Seeley's Anatomy &
Physiology, 13th Edition Questions and
Correct Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant Download
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1. Which level of structural organization is the simplest level that can
be considered living?
A. Tissue
B. Organ
C. Cell
D. Organ system
Rationale: The cell is the basic structural and functional unit of life.
Although atoms and molecules are essential components of cells, they
are not considered living independently. Cells combine to form tissues,
tissues form organs, and organs work together within organ systems.
, 2. Which statement best describes homeostasis?
A. The complete absence of changes within the body
B. The body's ability to maintain a relatively stable internal
environment
C. The body's ability to eliminate all disease
D. The process of producing energy exclusively from glucose
Answer: B. The body's ability to maintain a relatively stable internal
environment
Rationale: Homeostasis refers to the maintenance of relatively stable
internal conditions despite changes in the external or internal
environment. It does not mean that conditions remain completely
constant. Instead, physiological variables fluctuate within normal
ranges through regulatory mechanisms.
3. Which anatomical plane divides the body into equal right and left
portions?
A. Frontal plane
B. Transverse plane
C. Oblique plane
D. Midsagittal plane
,Rationale: A midsagittal plane, also called a median plane, passes
vertically through the midline and divides the body into equal right
and left portions. A sagittal plane also divides the body into right and
left portions but does not necessarily create equal halves.
4. Which term describes a structure that is closer to the body's
midline?
A. Lateral
B. Distal
C. Medial
D. Superficial
Rationale: Medial means toward or closer to the body's midline.
Lateral means farther from the midline. Distal refers to being farther
from the point of attachment, while superficial refers to being closer
to the body's surface.
5. Which organ system is primarily responsible for transporting
oxygen, nutrients, hormones, and metabolic wastes throughout
the body?
A. Respiratory system
B. Digestive system
C. Cardiovascular system
D. Lymphatic system
, Rationale: The cardiovascular system consists primarily of the heart,
blood, and blood vessels. It transports gases, nutrients, hormones,
heat, and metabolic wastes between different regions of the body.
6. Which organelle is primarily responsible for producing ATP
through aerobic cellular respiration?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Mitochondrion
Rationale: Mitochondria are the primary sites of aerobic cellular
respiration and generate much of the ATP used by cells. Ribosomes
synthesize proteins, lysosomes digest cellular materials, and the Golgi
apparatus modifies and packages proteins and lipids.
7. Which cellular structure regulates what substances enter and
leave the cell?
A. Nucleus
B. Cytoskeleton
C. Plasma membrane
D. Nucleolus
Physiology, 13th Edition Questions and
Correct Answers (Verified Answers) Plus
Rationale 2027 Q&A| Instant Download
1. Which level of structural organization is the simplest level that can
be considered living?
A. Tissue
B. Organ
C. Cell
D. Organ system
Rationale: The cell is the basic structural and functional unit of life.
Although atoms and molecules are essential components of cells, they
are not considered living independently. Cells combine to form tissues,
tissues form organs, and organs work together within organ systems.
, 2. Which statement best describes homeostasis?
A. The complete absence of changes within the body
B. The body's ability to maintain a relatively stable internal
environment
C. The body's ability to eliminate all disease
D. The process of producing energy exclusively from glucose
Answer: B. The body's ability to maintain a relatively stable internal
environment
Rationale: Homeostasis refers to the maintenance of relatively stable
internal conditions despite changes in the external or internal
environment. It does not mean that conditions remain completely
constant. Instead, physiological variables fluctuate within normal
ranges through regulatory mechanisms.
3. Which anatomical plane divides the body into equal right and left
portions?
A. Frontal plane
B. Transverse plane
C. Oblique plane
D. Midsagittal plane
,Rationale: A midsagittal plane, also called a median plane, passes
vertically through the midline and divides the body into equal right
and left portions. A sagittal plane also divides the body into right and
left portions but does not necessarily create equal halves.
4. Which term describes a structure that is closer to the body's
midline?
A. Lateral
B. Distal
C. Medial
D. Superficial
Rationale: Medial means toward or closer to the body's midline.
Lateral means farther from the midline. Distal refers to being farther
from the point of attachment, while superficial refers to being closer
to the body's surface.
5. Which organ system is primarily responsible for transporting
oxygen, nutrients, hormones, and metabolic wastes throughout
the body?
A. Respiratory system
B. Digestive system
C. Cardiovascular system
D. Lymphatic system
, Rationale: The cardiovascular system consists primarily of the heart,
blood, and blood vessels. It transports gases, nutrients, hormones,
heat, and metabolic wastes between different regions of the body.
6. Which organelle is primarily responsible for producing ATP
through aerobic cellular respiration?
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Mitochondrion
Rationale: Mitochondria are the primary sites of aerobic cellular
respiration and generate much of the ATP used by cells. Ribosomes
synthesize proteins, lysosomes digest cellular materials, and the Golgi
apparatus modifies and packages proteins and lipids.
7. Which cellular structure regulates what substances enter and
leave the cell?
A. Nucleus
B. Cytoskeleton
C. Plasma membrane
D. Nucleolus
