which of the following is the main function of the heart
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ATI TEAS 7

TEAS Test 7 science

1. What is the primary function of the heart?

Correct answer: C

Rationale: The main function of the heart is to pump blood throughout the body. The heart acts as a muscular pump that circulates blood, delivering oxygen and nutrients to the body's tissues and removing waste products. Option A is incorrect because blood filtration is a function of the kidneys, not the heart. Option B is incorrect as gas exchange occurs in the lungs, not the heart. Option D is also incorrect as hormone production is mainly carried out by endocrine glands, not the heart.

2. The following words share a common Greek-based suffix: anthropology, biology, cosmetology, etymology, and genealogy. What is the most likely meaning of the suffix -logy?

Correct answer: B

Rationale: The correct answer is B: 'Study.' The suffix -logy is derived from the Greek word 'logia,' meaning 'the study of.' In words like anthropology (study of humans), biology (study of life), cosmetology (study of cosmetics), etymology (study of word origins), and genealogy (study of family history), the suffix -logy indicates a field of study or discipline. Choices A, C, and D are incorrect because the suffix -logy does not signify 'record,' 'science,' or 'technique,' but rather the concept of 'study' or 'science of.'

3. What type of writing is used in the passage?

Correct answer: C

Rationale: The passage is expository because it presents information about 'The Five' group of Russian musicians and their contributions to classical music. It provides details about the background, works, and influence of each member of the group without telling a story, providing instructions, or attempting to persuade the reader. Choice A (narrative) is incorrect because the passage does not tell a story but rather presents factual information. Choice B (persuasive) is incorrect because the passage does not try to persuade the reader but instead informs about the musicians. Choice D (technical) is incorrect because the passage does not focus on technical details or procedures but rather on historical and musical information.

4. During normal breathing, which muscle is the primary driver of inhalation by contracting and flattening to increase the volume of the thoracic cavity?

Correct answer: A

Rationale: The diaphragm is the primary muscle responsible for inhalation during normal breathing. When it contracts, it flattens, increasing the volume of the thoracic cavity and creating a negative pressure that allows air to flow into the lungs. Intercostal muscles also play a role in expanding the chest cavity during inhalation, but the diaphragm is the main driver of the process. Abdominal muscles are primarily involved in exhalation by pushing the diaphragm upward to expel air from the lungs. Pectoral muscles are involved in movements of the arms and shoulders, not in breathing, making them incorrect choices for this question.

5. Which of the following statements best expresses the main idea of the passage?

Correct answer: B

Rationale: The main idea of the passage is that while making money may seem easy, managing it wisely is much more challenging. The author emphasizes the importance of spending less than what is earned to achieve financial stability. Choice A is incorrect as the passage focuses on the challenges of managing money, not on the ease of getting a job. Choice C is incorrect as Dr. Franklin is mentioned in the context of a quote about the simplicity of the road to wealth, not advocating getting a job in a mill. Choice D is incorrect as the passage does not primarily discuss spending money as the greatest temptation, but rather highlights the difficulty in managing money effectively.

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