,ATI TEAS Reading Exam Questions And Answers 2026/2027
SECTION 1: KEY IDEAS & DETAILS (15 Questions)
### Passage 1 (Questions 1-5)
*The circulatory system is a complex network of blood vessels, the heart,
and blood that transports oxygen, nutrients, hormones, and waste products
throughout the body. The heart, a muscular organ approximately the size of a
fist, functions as a pump that propels blood through two distinct circuits: the
pulmonary circuit and the systemic circuit. The pulmonary circuit carries
deoxygenated blood from the right side of the heart to the lungs, where
carbon dioxide is exchanged for oxygen. The systemic circuit carries
oxygenated blood from the left side of the heart to the rest of the body,
delivering oxygen and nutrients to tissues and removing waste products. The
circulatory system is essential for maintaining homeostasis, as it helps
regulate body temperature, pH balance, and fluid balance.*
---
**1.** What is the primary function of the pulmonary circuit?
A) To deliver oxygenated blood to the body's tissues
B) To exchange carbon dioxide for oxygen in the lungs
C) To pump blood through the systemic circulation
D) To transport nutrients from the digestive system
**Correct Answer:** B) To exchange carbon dioxide for oxygen in the lungs
**Rationale:** The passage explicitly states that the pulmonary circuit
"carries deoxygenated blood from the right side of the heart to the lungs,
where carbon dioxide is exchanged for oxygen." Option A describes the
,systemic circuit; Option C describes the heart's overall function; Option D
refers to nutrient transport.
---
**2.** According to the passage, what is the role of the heart in the
circulatory system?
A) To filter waste products from the blood
B) To produce red blood cells
C) To pump blood through the pulmonary and systemic circuits
D) To regulate body temperature
**Correct Answer:** C) To pump blood through the pulmonary and systemic
circuits
**Rationale:** The passage states that the heart "functions as a pump that
propels blood through two distinct circuits: the pulmonary circuit and the
systemic circuit." Option A describes the kidneys; Option B describes the
bone marrow.
---
**3.** What is the systemic circuit responsible for?
A) Exchanging carbon dioxide for oxygen in the lungs
B) Delivering oxygenated blood to the body's tissues
C) Pumping blood from the right side of the heart
D) Regulating blood pH
, **Correct Answer:** B) Delivering oxygenated blood to the body's tissues
**Rationale:** The passage states that the systemic circuit "carries
oxygenated blood from the left side of the heart to the rest of the body,
delivering oxygen and nutrients to tissues and removing waste products."
Option A describes the pulmonary circuit.
---
**4.** Which of the following is the best summary of the passage?
A) The heart is a muscular organ that pumps blood through the body.
B) The circulatory system transports blood through the pulmonary and
systemic circuits and is essential for maintaining homeostasis.
C) The lungs exchange carbon dioxide for oxygen in the blood.
D) The circulatory system is not important for maintaining homeostasis.
**Correct Answer:** B) The circulatory system transports blood through the
pulmonary and systemic circuits and is essential for maintaining
homeostasis.
**Rationale:** The passage covers the structure of the circulatory system
(heart, blood vessels, blood), the two circuits, and its role in maintaining
homeostasis. Option B captures the full scope of the passage.
---
**5.** Which of the following is NOT mentioned as a function of the
circulatory system?
SECTION 1: KEY IDEAS & DETAILS (15 Questions)
### Passage 1 (Questions 1-5)
*The circulatory system is a complex network of blood vessels, the heart,
and blood that transports oxygen, nutrients, hormones, and waste products
throughout the body. The heart, a muscular organ approximately the size of a
fist, functions as a pump that propels blood through two distinct circuits: the
pulmonary circuit and the systemic circuit. The pulmonary circuit carries
deoxygenated blood from the right side of the heart to the lungs, where
carbon dioxide is exchanged for oxygen. The systemic circuit carries
oxygenated blood from the left side of the heart to the rest of the body,
delivering oxygen and nutrients to tissues and removing waste products. The
circulatory system is essential for maintaining homeostasis, as it helps
regulate body temperature, pH balance, and fluid balance.*
---
**1.** What is the primary function of the pulmonary circuit?
A) To deliver oxygenated blood to the body's tissues
B) To exchange carbon dioxide for oxygen in the lungs
C) To pump blood through the systemic circulation
D) To transport nutrients from the digestive system
**Correct Answer:** B) To exchange carbon dioxide for oxygen in the lungs
**Rationale:** The passage explicitly states that the pulmonary circuit
"carries deoxygenated blood from the right side of the heart to the lungs,
where carbon dioxide is exchanged for oxygen." Option A describes the
,systemic circuit; Option C describes the heart's overall function; Option D
refers to nutrient transport.
---
**2.** According to the passage, what is the role of the heart in the
circulatory system?
A) To filter waste products from the blood
B) To produce red blood cells
C) To pump blood through the pulmonary and systemic circuits
D) To regulate body temperature
**Correct Answer:** C) To pump blood through the pulmonary and systemic
circuits
**Rationale:** The passage states that the heart "functions as a pump that
propels blood through two distinct circuits: the pulmonary circuit and the
systemic circuit." Option A describes the kidneys; Option B describes the
bone marrow.
---
**3.** What is the systemic circuit responsible for?
A) Exchanging carbon dioxide for oxygen in the lungs
B) Delivering oxygenated blood to the body's tissues
C) Pumping blood from the right side of the heart
D) Regulating blood pH
, **Correct Answer:** B) Delivering oxygenated blood to the body's tissues
**Rationale:** The passage states that the systemic circuit "carries
oxygenated blood from the left side of the heart to the rest of the body,
delivering oxygen and nutrients to tissues and removing waste products."
Option A describes the pulmonary circuit.
---
**4.** Which of the following is the best summary of the passage?
A) The heart is a muscular organ that pumps blood through the body.
B) The circulatory system transports blood through the pulmonary and
systemic circuits and is essential for maintaining homeostasis.
C) The lungs exchange carbon dioxide for oxygen in the blood.
D) The circulatory system is not important for maintaining homeostasis.
**Correct Answer:** B) The circulatory system transports blood through the
pulmonary and systemic circuits and is essential for maintaining
homeostasis.
**Rationale:** The passage covers the structure of the circulatory system
(heart, blood vessels, blood), the two circuits, and its role in maintaining
homeostasis. Option B captures the full scope of the passage.
---
**5.** Which of the following is NOT mentioned as a function of the
circulatory system?
