UT Arlington BIOL 2457 Exam 1 (pdf) | 2026/2027 | Human Anatomy
& Physiology I Q&A | Anatomy
1. The study of the structure and function of cells is called:
A) Histology
B) Pathology
C) Cytology
D) Gross Anatomy
Correct Answer: Cytology
Rationale: Cytology is the study of cellular structure and function. Histology
is the study of tissues, pathology is the study of disease, and gross anatomy
is the study of structures visible to the unaided eye.
2. The anatomical position is described as a person standing erect with:
A) Palms facing posteriorly
B) Palms facing anteriorly
C) Feet pointed outward
D) Head tilted to the side
Correct Answer: Palms facing anteriorly
Rationale: In the standard anatomical position, a person stands upright with
feet flat on the floor, face forward, and palms facing forward (anteriorly).
3. Which of the following is the correct sequence of structural organization
from simplest to most complex?
A) Cell → Tissue → Organ → Organ system → Organism
B) Tissue → Cell → Organ → Organ system → Organism
C) Organ → Tissue → Cell → Organ system → Organism
D) Cell → Organ → Tissue → Organ system → Organism
Correct Answer: Cell → Tissue → Organ → Organ system → Organism
,Rationale: The levels of structural organization progress from atoms to
molecules, to cells (the smallest living unit), to tissues (groups of similar
cells), to organs (composed of different tissues), to organ systems, and
finally to the organism.
4. The directional term meaning "toward the front of the body" is:
A) Posterior
B) Superior
C) Anterior
D) Medial
Correct Answer: Anterior
Rationale: Anterior (or ventral) means toward the front of the body. Posterior
(or dorsal) means toward the back. Superior means toward the head, and
medial means toward the midline.
5. The heart is located in which cavity?
A) Cranial cavity
B) Abdominopelvic cavity
C) Thoracic cavity
D) Spinal cavity
Correct Answer: Thoracic cavity
Rationale: The thoracic cavity is the superior portion of the ventral cavity,
which contains the heart and lungs. The heart is specifically located in the
pericardial cavity within the thoracic cavity.
6. The cavity that contains the brain is the:
A) Cranial cavity
B) Vertebral canal
C) Thoracic cavity
,D) Abdominopelvic cavity
Correct Answer: Cranial cavity
Rationale: The cranial cavity is part of the dorsal body cavity and contains
the brain. The vertebral canal contains the spinal cord.
7. Which type of serous membrane lines the walls of the thoracic cavity?
A) Visceral pleura
B) Parietal pleura
C) Visceral pericardium
D) Parietal peritoneum
Correct Answer: Parietal pleura
Rationale: The parietal pleura is the serous membrane that lines the walls of
the thoracic cavity. The visceral pleura covers the lungs themselves. Parietal
peritoneum lines the abdominopelvic cavity.
8. The function of the serous fluid secreted by serous membranes is to:
A) Provide nutrients to organs
B) Reduce friction between organs
C) Prevent infection
D) Store energy
Correct Answer: Reduce friction between organs
Rationale: Serous fluid is a lubricating fluid that reduces friction between
organs as they move and function within their respective cavities.
9. A section that divides the body into superior and inferior portions is called
a:
A) Sagittal section
B) Frontal section
, C) Transverse section
D) Midsagittal section
Correct Answer: Transverse section
Rationale: A transverse (or horizontal) section divides the body into superior
(upper) and inferior (lower) parts. A sagittal section divides the body into
right and left parts, and a frontal (coronal) section divides it into anterior and
posterior parts.
10. Which of the following correctly describes a positive feedback
mechanism?
A) It maintains homeostasis by reversing a change
B) It amplifies a change and moves the body away from homeostasis
C) It is the primary mechanism for regulating body temperature
D) It is always harmful to the body
Correct Answer: It amplifies a change and moves the body away from
homeostasis
Rationale: Positive feedback mechanisms amplify the initial change, moving
the body away from homeostasis. They are not the primary means of
maintaining homeostasis but are used in specific situations, such as blood
clotting and childbirth.
11. The smallest stable unit of matter is a(n):
A) Atom
B) Molecule
C) Cell
D) Tissue
Correct Answer: Atom
Rationale: An atom is the smallest unit of matter that retains the properties
of an element. Molecules are made of atoms, and cells are made of
molecules.
& Physiology I Q&A | Anatomy
1. The study of the structure and function of cells is called:
A) Histology
B) Pathology
C) Cytology
D) Gross Anatomy
Correct Answer: Cytology
Rationale: Cytology is the study of cellular structure and function. Histology
is the study of tissues, pathology is the study of disease, and gross anatomy
is the study of structures visible to the unaided eye.
2. The anatomical position is described as a person standing erect with:
A) Palms facing posteriorly
B) Palms facing anteriorly
C) Feet pointed outward
D) Head tilted to the side
Correct Answer: Palms facing anteriorly
Rationale: In the standard anatomical position, a person stands upright with
feet flat on the floor, face forward, and palms facing forward (anteriorly).
3. Which of the following is the correct sequence of structural organization
from simplest to most complex?
A) Cell → Tissue → Organ → Organ system → Organism
B) Tissue → Cell → Organ → Organ system → Organism
C) Organ → Tissue → Cell → Organ system → Organism
D) Cell → Organ → Tissue → Organ system → Organism
Correct Answer: Cell → Tissue → Organ → Organ system → Organism
,Rationale: The levels of structural organization progress from atoms to
molecules, to cells (the smallest living unit), to tissues (groups of similar
cells), to organs (composed of different tissues), to organ systems, and
finally to the organism.
4. The directional term meaning "toward the front of the body" is:
A) Posterior
B) Superior
C) Anterior
D) Medial
Correct Answer: Anterior
Rationale: Anterior (or ventral) means toward the front of the body. Posterior
(or dorsal) means toward the back. Superior means toward the head, and
medial means toward the midline.
5. The heart is located in which cavity?
A) Cranial cavity
B) Abdominopelvic cavity
C) Thoracic cavity
D) Spinal cavity
Correct Answer: Thoracic cavity
Rationale: The thoracic cavity is the superior portion of the ventral cavity,
which contains the heart and lungs. The heart is specifically located in the
pericardial cavity within the thoracic cavity.
6. The cavity that contains the brain is the:
A) Cranial cavity
B) Vertebral canal
C) Thoracic cavity
,D) Abdominopelvic cavity
Correct Answer: Cranial cavity
Rationale: The cranial cavity is part of the dorsal body cavity and contains
the brain. The vertebral canal contains the spinal cord.
7. Which type of serous membrane lines the walls of the thoracic cavity?
A) Visceral pleura
B) Parietal pleura
C) Visceral pericardium
D) Parietal peritoneum
Correct Answer: Parietal pleura
Rationale: The parietal pleura is the serous membrane that lines the walls of
the thoracic cavity. The visceral pleura covers the lungs themselves. Parietal
peritoneum lines the abdominopelvic cavity.
8. The function of the serous fluid secreted by serous membranes is to:
A) Provide nutrients to organs
B) Reduce friction between organs
C) Prevent infection
D) Store energy
Correct Answer: Reduce friction between organs
Rationale: Serous fluid is a lubricating fluid that reduces friction between
organs as they move and function within their respective cavities.
9. A section that divides the body into superior and inferior portions is called
a:
A) Sagittal section
B) Frontal section
, C) Transverse section
D) Midsagittal section
Correct Answer: Transverse section
Rationale: A transverse (or horizontal) section divides the body into superior
(upper) and inferior (lower) parts. A sagittal section divides the body into
right and left parts, and a frontal (coronal) section divides it into anterior and
posterior parts.
10. Which of the following correctly describes a positive feedback
mechanism?
A) It maintains homeostasis by reversing a change
B) It amplifies a change and moves the body away from homeostasis
C) It is the primary mechanism for regulating body temperature
D) It is always harmful to the body
Correct Answer: It amplifies a change and moves the body away from
homeostasis
Rationale: Positive feedback mechanisms amplify the initial change, moving
the body away from homeostasis. They are not the primary means of
maintaining homeostasis but are used in specific situations, such as blood
clotting and childbirth.
11. The smallest stable unit of matter is a(n):
A) Atom
B) Molecule
C) Cell
D) Tissue
Correct Answer: Atom
Rationale: An atom is the smallest unit of matter that retains the properties
of an element. Molecules are made of atoms, and cells are made of
molecules.
