ATI RN CRITICAL THINKING
ENTRANCE/EXIT EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS WITH WELL
DEFINED RATIONALES
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Section 1: Basic Terminology & Organization (Questions 1-20)
1. The study of the structure of the body is known as:
A) Physiology
B) Histology
C) Anatomy
D) Cytology
Correct Answer: C
Rationale: Anatomy is the study of the structure of the body and the
relationship of its parts. Physiology is the study of function.
2. The plane that divides the body into equal right and left halves is called the:
A) Sagittal plane
B) Parasagittal plane
C) Frontal plane
D) Midsagittal plane
Correct Answer: D
Rationale: The midsagittal (or median) plane runs directly down the midline
of the body, dividing it into equal right and left halves.
,3. The term "proximal" means:
A) Closer to the point of attachment to the trunk
B) Farther from the point of attachment to the trunk
C) Toward the back of the body
D) Toward the midline of the body
Correct Answer: A
Rationale: Proximal refers to a location on a limb that is nearer to the point of
attachment to the trunk. The opposite is distal.
4. The dorsal body cavity contains which of the following?
A) Thoracic and abdominopelvic cavities
B) Cranial and vertebral cavities
C) Abdominal and pelvic cavities
D) Pleural and pericardial cavities
Correct Answer: B
Rationale: The dorsal body cavity is located on the posterior side of the body
and is divided into the cranial cavity (housing the brain) and the vertebral
cavity (housing the spinal cord).
5. Which of the following is NOT a vital sign?
A) Body temperature
B) Pulse rate
C) Blood glucose level
D) Respiratory rate
Correct Answer: C
,Rationale: Vital signs are measurements of the body's most basic functions,
including temperature, pulse, respiration, and blood pressure. Blood glucose
is a clinical test, not a standard vital sign.
6. The serous membrane that lines the walls of the thoracic cavity is the:
A) Visceral pleura
B) Parietal pleura
C) Pericardium
D) Peritoneum
Correct Answer: B
Rationale: The parietal pleura lines the internal walls of the thoracic cavity.
The visceral pleura covers the lungs themselves.
7. The process by which organisms maintain a relatively stable internal
environment is called:
A) Homeostasis
B) Metabolism
C) Anabolism
D) Catabolism
Correct Answer: A
Rationale: Homeostasis is the dynamic state of equilibrium within the body,
maintaining conditions essential for survival.
8. A cut that divides the body into anterior and posterior portions is made on
the:
A) Sagittal plane
B) Transverse plane
, C) Frontal plane
D) Midsagittal plane
Correct Answer: C
Rationale: The frontal plane (coronal plane) divides the body into anterior
(front) and posterior (back) sections.
9. Which of the following is an example of a negative feedback mechanism?
A) Blood clotting
B) Childbirth contractions
C) Regulation of blood glucose by insulin
D) The generation of an action potential
Correct Answer: C
Rationale: Negative feedback works to reduce the intensity of a stimulus and
bring the body back to a set point. The insulin-glucose system is a classic
example.
10. Which of the following regional terms correctly describes the area of the
armpit?
A) Acromial
B) Brachial
C) Axillary
D) Antecubital
Correct Answer: C
Rationale: The axillary region is commonly known as the armpit. The brachial
region is the arm, and the acromial region is the shoulder point.
11. The abdominopelvic cavity is subdivided into the:
ENTRANCE/EXIT EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS WITH WELL
DEFINED RATIONALES
---
Section 1: Basic Terminology & Organization (Questions 1-20)
1. The study of the structure of the body is known as:
A) Physiology
B) Histology
C) Anatomy
D) Cytology
Correct Answer: C
Rationale: Anatomy is the study of the structure of the body and the
relationship of its parts. Physiology is the study of function.
2. The plane that divides the body into equal right and left halves is called the:
A) Sagittal plane
B) Parasagittal plane
C) Frontal plane
D) Midsagittal plane
Correct Answer: D
Rationale: The midsagittal (or median) plane runs directly down the midline
of the body, dividing it into equal right and left halves.
,3. The term "proximal" means:
A) Closer to the point of attachment to the trunk
B) Farther from the point of attachment to the trunk
C) Toward the back of the body
D) Toward the midline of the body
Correct Answer: A
Rationale: Proximal refers to a location on a limb that is nearer to the point of
attachment to the trunk. The opposite is distal.
4. The dorsal body cavity contains which of the following?
A) Thoracic and abdominopelvic cavities
B) Cranial and vertebral cavities
C) Abdominal and pelvic cavities
D) Pleural and pericardial cavities
Correct Answer: B
Rationale: The dorsal body cavity is located on the posterior side of the body
and is divided into the cranial cavity (housing the brain) and the vertebral
cavity (housing the spinal cord).
5. Which of the following is NOT a vital sign?
A) Body temperature
B) Pulse rate
C) Blood glucose level
D) Respiratory rate
Correct Answer: C
,Rationale: Vital signs are measurements of the body's most basic functions,
including temperature, pulse, respiration, and blood pressure. Blood glucose
is a clinical test, not a standard vital sign.
6. The serous membrane that lines the walls of the thoracic cavity is the:
A) Visceral pleura
B) Parietal pleura
C) Pericardium
D) Peritoneum
Correct Answer: B
Rationale: The parietal pleura lines the internal walls of the thoracic cavity.
The visceral pleura covers the lungs themselves.
7. The process by which organisms maintain a relatively stable internal
environment is called:
A) Homeostasis
B) Metabolism
C) Anabolism
D) Catabolism
Correct Answer: A
Rationale: Homeostasis is the dynamic state of equilibrium within the body,
maintaining conditions essential for survival.
8. A cut that divides the body into anterior and posterior portions is made on
the:
A) Sagittal plane
B) Transverse plane
, C) Frontal plane
D) Midsagittal plane
Correct Answer: C
Rationale: The frontal plane (coronal plane) divides the body into anterior
(front) and posterior (back) sections.
9. Which of the following is an example of a negative feedback mechanism?
A) Blood clotting
B) Childbirth contractions
C) Regulation of blood glucose by insulin
D) The generation of an action potential
Correct Answer: C
Rationale: Negative feedback works to reduce the intensity of a stimulus and
bring the body back to a set point. The insulin-glucose system is a classic
example.
10. Which of the following regional terms correctly describes the area of the
armpit?
A) Acromial
B) Brachial
C) Axillary
D) Antecubital
Correct Answer: C
Rationale: The axillary region is commonly known as the armpit. The brachial
region is the arm, and the acromial region is the shoulder point.
11. The abdominopelvic cavity is subdivided into the:
